KR101045977B1 - Record media storing citation information analysis method and patent program for patent information analysis - Google Patents

Abstract

Disclosed are a citation information analysis method for patent information analysis and a recording medium storing a computer program for the method. By analyzing the research patents and patents cited or cited by using the citation information included in the patent information sequentially and showing the correlations in the diagrams, it is possible to grasp the trend of the relevant technology as well as new markets. It can be used as a way of exploring new collaborators, exploring licensing, finding key patents, or investigating invalid evidence.

Patent map, cited patent, cited patent, cited, citing, backward, forward

Description

Method of citation information analysis for patent information analysis and recording medium storing computer program thereon {METHOD OF SITED AND SITING INFORMATION ANALYSIS FOR PATENT MAP AND MEDIA THAT CAN RECORD COMPUTER PROGRAM THEREOF}

The present invention relates to a method for analyzing patent information, and systematically analyzes and illustrates the citations included in the patent document, and information for developing new products or pioneering new markets through analysis of the current technology and major patents. The present invention relates to a citation information analysis method for patent information analysis that can be easily used as a method of identifying and finding important patents, and a recording medium storing a computer program for the method.

In order to survive in the environment of patent war, it is necessary to establish a comprehensive patent strategy for promising products. It is urgently needed to prepare for countermeasures such as preventing patent disputes in advance, promoting independent development of related core technologies, and reducing royalties through patent avoidance design.

In an effort to meet these demands, a thorough analysis of industrial property rights related to the related technologies and the determination of the direction of technology development based on them are required first, so the existence of preceding source patent rights, possibility of avoiding source patent rights, and technology development of competitors Analysis of information on trends, etc., is a major issue.

In general, when conducting a prior patent technology search using a patent database, a lot of terms, technical classifications, or technical codes indicating technical contents are used. As the technology advances, the terminology continues to change, and when the term currently used is used, the original basic patent may not be searched, while only the old patent may be searched and the recently applied patent may not be searched. In this way, if a user selects a term, a classification, a code, or the like used in a search, a desired patent cannot be found.

In addition, when searching using the applicant's name, if the organization name is changed, the search should be performed using the new organization name.

Therefore, using the citation relationship of the patent in order to make such a search accurately, it is easier to find the desired patent.

The patent specification lists cited documents and cited patents citing prior art. This list is the literature and patents cited to represent past patents and is referred to as cited in terms of the patents to be investigated. Many patent databases contain these citations, which can be used to infer the importance of each patent. These citations can also be referred to in patent publications and the like. Older data can be found by reversing the cited material.

On the contrary, the cited patent is difficult to examine only by referring to the patent specification, but can be relatively easily searched in a search using a database. In addition, if the number of citations in the cited patent is confirmed in the same form as the citation, it can be used for evaluation of each patent.

By using such citations and cited patent information, you can check the related patents and the technical contents of the literature and obtain a great amount of information.In addition, the technology is advanced, and the technically relevant patents are investigated in depth even if the terms used are changed. can do. In addition, the examination of cited patents may be utilized as a preliminary investigation before filing a patent.

For patent analysis, one of the methods of analyzing how the respective patents are related to each other is a method of visually showing the correlations between the cited patents. For example, use the citation relationship between the cited patents related to the patent to be investigated to determine the importance of the technology by investigating which patent is the basic patent in a particular technology and which citations are cited the most among the related patents. Will be done. This is similar to evaluating the value of a paper based on the citation status of references cited in each article in the paper.

In addition to examining such basic patents and important patents, cited patents are also effectively used to examine relevant invalid evidence data of patents. For example, it is useful to find similar invalid reference materials by intensively examining which patent data related to family patents in the United States have patented patents and which patents are cited in the cited patents again. can do.

You can also find out how your patent is being cited to others who have filed it later. This is because it can be used as a judgment data about the use of my patent, problems between inventions, or licensing.

In particular, it is possible not only to quickly analyze citations of patents related to research patents to be searched from patent databases, but also to grasp trends of relevant technologies, to discover new markets, to find new collaborators, and to search for licensing or core patents (important patents). We need a citation analysis method that can be easily used as a way to find.

Accordingly, the present invention uses the citation relationship between the patents related to the patent to be investigated to investigate the importance of the technology by investigating which patent is the basic patent in a particular technology and which citations are cited the most among the related patents. Its purpose is to provide a method for analyzing citation information that makes judgments possible.

Another object of the present invention is to provide a method for analyzing citation information, which can present a distribution of prior art that can be efficiently used for examining invalid evidence data.

In addition, another object of the present invention is to provide a method of analyzing citation information, which can be used as a judgment data on the use of patents, problems between inventions, or licensing to others who have a specific patent applied afterwards.

In addition, another object of the present invention is to provide a citation information analysis method for displaying the degree to confirm whether each document is cited or cited.

Another object of the present invention is to provide a recording medium on which such citation information analysis method is recorded by a computer program.

Citation information analysis method for patent information analysis according to the present invention for achieving this object is (a) inputting the patent number of the investigation patent to examine the citation relationship, (b) the investigation patent cited at the time of application ( cited) retrieving patent numbers of cited patents and storing them as backward patents, (c) retrieving patent numbers of cited patents cited by the investigation patents as forward patents. Storing, (d) generating a citation relationship table listing patent numbers of backward patents on the left side and patent numbers of forward patents on the right side using the search result, and (e) generating the citation relationships In the table, the search patent is used as a reference node, and the patent numbers of the backward patents are arranged in the first node in the first column on the left, and the patent numbers of the forward patents are arranged in the first column on the right in the first column. And arranging the nodes in order and displaying the node relations in two dimensions on the x-axis and y-axis planes.

In order to be able to determine the importance of the technology, step (b) includes searching the citation number field to search for a first cited patent cited at the time of filing of the patent application, and the first cited patent cited above. Retrieving the second cited patent, retrieving the third cited patents cited by the second cited patent, and retrieving the search until there is no patent number in the citation number field of the cited patents. Repetitively retrieving and storing the patent number as a backward patent,

Step (c) includes: searching the citation number field to search for a first cited patent cited by the research patent; and searching for a second cited patent cited by the first cited patent; Searching the third cited patents cited by the second cited patent and repeating the search until there is no patent number in the citation number field of the cited patents. Forward patent) to retrieve and store the patent number.

Therefore, step (d) lists the patent numbers of the first cited patents in order in the left first column of the backward patent and in the left second column the patents of the second cited patents cited by the first cited patent. The numbers are arranged in order, and in the left third column, the numbers of the patents of the third cited patents cited by the second cited patent are listed in order so that the number of columns is gradually increased from the center to the left until there is no cited patent. Patent numbers of backward patents are listed, and the first number of right citation patents is listed in order in the right first column of the forward patent, and the first citation patent cited by the first citation patent is in the second right column. The patent numbers of the two citation patents are listed in order, and in the third column on the right, the patent numbers of the third citation patents cited by the second citation patent are listed in order, until there is no citation patent. Standing toward the right to list the patent number of forward patent in such a manner that the number of additional heat is desirable to create a quote relationship table.

On the other hand, in order to examine whether the cited material is cited the most, in the first row of each column of the backward patent, the patent number is recorded in descending order sequentially from the patent number citing the most prior literature in the column Further, in the first row of each column of the forward patent, it is more preferable to record the citation relationship table in which the patent number is recorded in descending order starting from the patent number citing the most prior document in the corresponding column.

In order to indicate the degree to which the citation or citation is made, the investigation patent is used as a reference node in the generated citation relationship table, and the patent number of the first column on the left side of the backward patent is listed as the first node and the left side. The patent numbers in the second column are listed in order by the second node, and each node is listed in order, and the patent number of the backward patents is listed as nodes in such a way that the number of nodes increases from the center to the left until there is no cited patent. and,

The patent number of the right first column of the forward patent is listed as the first node, and the patent number of the right second column is listed as the second node. Listing and displaying the patent numbers of forward patents as nodes in a manner in which the number of nodes is added toward the right side, and each node displays the corresponding patent number and also when there is a cited or cited patent, i.e., when there are subordinate nodes, And displaying the identification table indicating that the node exists in the upper node and arranging it in two dimensions on the x-axis and y-axis planes.

The notation of the number of nodes may further include the step of receiving the number of nodes to be displayed in the backward patent and the number of nodes to be displayed in the forward patent in step (e) to display only the input number of nodes, respectively. By counting and displaying the number of each node of the word patent or the forward patent, only necessary information can be displayed.

In this case, the patent number to be displayed on each node is one of an application number, a publication number, or a registration number.

In the recording medium for the computer program, (a) inputting a patent number of a research patent to be examined for a citation relationship, and (b) searching for a patent number of cited patents cited at the time of filing the research patent. Storing as a patent, (c) retrieving patent numbers of cited patents cited by the research patent, and storing the patent as a forward patent, and (d) storing the search results (C) generating a citation relationship table listing patent numbers of backward patents on the left side, and a patent number of forward patents on the right side; and (e) generating a reference patent as a reference node in the generated citation relationship table. The patent numbers of the word patents are arranged in the first node in the first column on the left, and the patent numbers of the forward patents are arranged in the first node in the first column on the right, in the order of the x-axis. The program including the step of displaying the node association is stored in the y-plane in two dimensions.

Therefore, according to the present invention, it is possible to quickly analyze the citation relations of patents related to the research patents to be searched from the patent database, to grasp the trend of the relevant technology, to discover new markets, to find new collaborators, and to search for licensing or core patents (important patents). Can be used as a way to find

The present invention can be efficiently utilized for examining invalid evidence data by displaying the distribution of prior art.

In addition, the present invention has an effect that can be utilized as a judgment data on the use of the patent, problems between the invention, or whether or not to a specific patent is filed for others.

Another effect can be to identify the continuing flow of technology by placing a tag to identify whether each document is cited or cited.

In addition, the present invention provides a recording medium recording such a method of analyzing the citation information by using a computer program, thereby enabling various users to easily use the information of the citations through information retrieval.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

1 is a basic configuration for analyzing citation information according to an embodiment of the present invention, the input device 110 is installed with a patent information analysis program is configured to be connected to the citation server 130 through the Internet 120 do.

The input device 110 controls the input unit 112 for inputting the relevant key required for the present invention, the display means 113 for displaying the citation relationship table, the output unit 114, and the functions necessary for the practice of the present invention. It includes a control unit 111, an interface 116 for communicating with the Internet 1200, and a memory 115 used for storing related programs or temporary data.

The cited reference server 130 is a form in which at least two patents are stored in association with information on their prior patents, respectively, and data in which cited or cited citations are stored. A table for creating a related table using the information collected from the base 134, the search means 133 for searching the citations stored in the database 134, and the information obtained from the search means 133, and transmitting it to the input device 110. The creation unit 132 is configured to include an interface 131 for communicating with the Internet 120.

In the present invention, cited or citing patents are used as follows. A cited patent refers to a prior patent cited by a patent to be investigated, and a citing patent is referred to as a cited patent in case a research patent is cited as a prior document in the future. In addition, the cited patent group will be described as classified as a forward patent and the cited patent group as a forward patent.

The cited patents stored in the database 134 include the prior art documents indicated by the inventors and the prior art presented directly or indirectly at the application, examination and judging stages, including technical document information judged by the examiner to be highly related to the patents in the examination process. Include all literature. This includes, for example, Information Disclosure Statements (IDS) submitted and cited at the audit stage.

In particular, when there are many cited patents, it is desirable to have as much data as possible because it is advantageous for analyzing the value and importance of technology and the direction of technology change.

The citation patent information of the database 134 includes a reference cited field including a reference cited field containing the patent number information of the prior patent cited when the patent is filed.

The citation is based on the presence or absence of information recorded in the reference cited field.

In particular, when the control unit 111 receives the patent number of the research patent to search the cited patent through the input unit 112, the citation server 130 is a database of the first cited patent cited at the time of filing the patent ( In the citation number field of 134, the patent number and related information are stored, and the second citation patent cited by the first citation patent is searched to store the patent number and related information.

Of course, at this time, it stores the patent number (application number, publication number, registration number) of the patent and at the same time to store all the information of the document so that if the user wants detailed information by linking with the patent number (display) It is preferable.

The citation server 130 repeats the search until the patent number is not present in the citation number field of the cited patents by searching the third cited patents cited by the second cited patent again. Search and save. As described above, the patents cited by the patent are referred to as backward patents.

4 is a diagram illustrating a method of using a patent citation or cited information. Referring to FIG. 4, a front page of a US patent US4715420 is shown in the center, and US4715420 is cited by an identifier [56]. cited) The patent information of the patents is shown in bold lines, and the enlarged left view shows that the patent documents cited in the fields "US PATENT DOCUMENTS" and "FOREIGN PATENT DOCUMENTS" are shown in "References Cited", respectively. have.

That is, the documents cited on the left by US4715420 become the first cited patent and the documents cited again by the first cited patent become the second cited patent, and the cluster of these patents is called the backward patent.

In the same way, the citation server 130 searches for the citation number field, searches for and stores the first cited patent for which the cited patent is cited, and searches for the second cited patent for which the first cited patent is cited. Then, the search is repeated to search for the third cited patents cited by the second cited patent until the patent number is not present in the citation number field of the cited patents. Search and save by their patent number, but save and write the back patent and forward patent as a table.

Referring to FIG. 4, other patent documents citing US4715420 are shown on the right side of the drawing. These documents become the first citation patent and the documents cited by the first citation patent are referred to as the second citation patent, and the cluster of these patents is called the forward patent.

The table thus created is transmitted to the control unit 111 again, and the control unit 111 classifies the backward patent and the forward patent into left and right sides, respectively.

In detail, the patent numbers of the backward patents are listed on the left side, and the patent numbers of the forward patents are listed on the right side, but the patent numbers of the first cited patents are listed in order in the left first column of the backward patent, and in the second left column. The patent numbers of the second cited patents cited by the first cited patent are listed in order, and in the left third column, the patent numbers of the third cited patents cited by the second cited patent are listed in order. List the patent numbers of the backward patents in such a way that the number of rows increases from the center to the left until there is no.

The control unit 111 again lists the patent numbers of the first citation patents in the right first column of the forward patent, and the second citation patents cited by the first citation patent in the second right column. The numbers are arranged in order, and in the third column on the right, the numbers of the patents of the third citations cited by the second citation patent are listed in order. List the patent numbers of the forward patents in an additional way.

In the first row of each column of the backward patent, the patent number is recorded sequentially in descending order starting from the patent in which the number of the most cited patents is present, and in the first row of the forward patent, the most frequently cited patent is cited. A citation relationship table in which patent numbers are recorded is sequentially generated from a patent having a patent number in descending order.

In the citation relationship table generated as described above, each node is listed as a reference node, the patent number of the left first column of the backward patent is listed as the first node, and the patent number of the left second column is listed as the second node. In order that the number of nodes is added from the center to the left until there are no cited patents, the patent numbers of the backward patents are listed and displayed as nodes, and the patent number of the first column on the right side of the forward patent is displayed. The number of nodes in the second column on the right and the number in the second row on the right are listed in the order of the second node. The number of nodes goes from the center to the right until there is no cited patent. List and display the numbers as nodes, each node with a corresponding patent number and, when there is a cited or cited patent, When the above node is present to display the identification tags that the child node exists, the parent node is to be displayed two-dimensionally arranged in x-axis and y-axis plane.

A citation relationship table according to an embodiment of the present invention will be described with reference to FIGS. 3 and 6.

As shown, the research patent has a patent number of 4715420, the patent number of the research patent as a reference node is displayed in the center, and on the left, five patent numbers of the first backward patents cited by the research patent are displayed. Again, 10 patent numbers of the second backward patents cited by the first backward patents are displayed, and 43 of the third backward patents are displayed.

At this time, the case with the most cited patent in each column is displayed at the top and gradually in descending order.

On the right side of the research patent indicated as the reference node, the cited patents are indicated as the first, second, and third forward patents in the same manner.

In the upper part, the input window for inputting the number of nodes to be displayed is displayed as "tree depth" and the "Node Name" window where the content to be displayed at each node can be selected.

Preferably, the "Node Name" window is configured to select the application number, publication number, registration number and the like.

In addition, in each node, if there is a cited patent or cited patent cited by each node, the identification mark "-" is further added to the lower right of each node, which implies that the next document exists. Therefore, it is possible to identify whether each document is cited or cited, so that the continuous flow of technology can be grasped.

In the drawing, the number of nodes to be displayed is input as three, and in the lower left portion, the number of documents corresponding to each node is represented by a backward patent and a forward patent. In detail, the first, second, and third forward patents are represented by "B1, B2, and B3", respectively, and the first, second, and third forward patents are represented by "F1, F2, and F3", respectively, and the corresponding nodes are represented. The number of is to be written separately. Referring to Figure 3 can be clearly identified.

This can be used as judgment data on the use of patents, problems between inventions, or licensing.

FIG. 5 is a diagram illustrating an example for analyzing a main patent using citations or cited patents of the present invention. Referring to the drawings, the most cited documents in the backward patent are cited based on the Y axis. The number of times listed is sequentially listed, and the forward patent is sequentially listed by the number of times cited based on the X-axis, also referred to as a four-minute technical classification table.

As shown, according to the number of citations, it is classified into the technology group corresponding to the maturity or improved technology, the technology group corresponding to the initial or marginal technology, the technology group corresponding to the original technology, and the technology group corresponding to the competitive or mature technology. It is possible to analyze the citation relationship of patents in a short time so that it is possible to find the trend of the relevant technology, as well as to discover new markets, find new partners, search for licensing, or find key patents (important patents).

Specifically, when the prior art is more likely to be an improvement technology that improves the technical performance of many fields, it is called a maturity or improvement technology group, and it is a new technology based on an original idea that others have not performed, or it is not economically helpful. When the technology is not used, they are called the initial technology or the technology group. When the technology is rapidly developing during the maturity period, the linkage between the technologies is high, and when the technology is likely to be complementary technology, it is called the competitive or mature technology group.

In this competitive or mature technology group, it is difficult to use aggressive marketing with a single technology.

Also, when technology is pioneered faster than others, it is classified as original technology group when it is more likely to be original technology.

This classification will be determined for each technology group in consideration of specific factors or factors, but for each patent group, that is, the average of the number of citations of each patent investigated in a backward patent, the average value of the citation counts for each patent group is higher. It is preferable to arrange in a group.

Similarly, the Forwon patent group can be classified in the same way.

Hereinafter, a method of analyzing citation information according to an embodiment of the present invention will be described with reference to FIG. 2.

Figure 2 is a flow chart for explaining an embodiment of the present invention, the input device 110 is connected to the citation server 130 via the Internet 120 (S210) of the patent application number or publication number or registration number of the research patent By inputting at least one (hereinafter referred to as "patent number") is to apply for the investigation of citations for the research patent (S220).

When the number of nodes to be displayed is determined by inputting the number of nodes corresponding to a tree to be displayed in the citation or cited document (S230), 'Reference cited information of each prior patent information stored in the prior patent database. After searching for a cited patent or cited patent including the patent number of the research patent in the field (S240), a table is created (S250).

Specifically, the first cited patent cited at the time of filing the patent is searched by searching the citation number field of the database, the second cited patent cited by the first cited patent is searched, and the second cited cited again. As a method of searching for the third cited patents cited by the patent, the search is repeated until the patent number of the cited patents does not exist in the cited number field of the cited patents. To store, search the citation number field, search for the first cited patent cited by the investigation patent, search for the second cited patent cited by the first cited patent, and then again search for the second cited patent. As a method of searching the third cited patents cited by the cited patent, the search is repeated until the patent number of the cited patent does not exist in the citation number field. It retrieves patent numbers of rd patents and stores them in a table, and also stores detailed information of related documents.

When the table created above is transmitted to the input device, the input device receives the cited or cited document information (S260), creates nodes to display the cited tree, that is, the cited or cited patents (S270), and the cited or cited document. A citation relationship table is created using these (S280).

Hereinafter, steps S260 to S280 will be described in more detail.

The input device lists the patent numbers of the backward patents on the left side and the patent numbers of the forward patents on the right side using the received table, but lists the patent numbers of the first cited patents in the first column on the left side of the backward patent. In the left column, the patent numbers of the second citation patents cited by the first citation patent are listed in order, and in the left column, the patent numbers of the third citation patents cited by the second citation patent are listed in this order. The patent numbers of the backward patents are listed in such a way that the number of columns is added from the center to the left until there is no cited patent, and the patent numbers of the first citation patents are listed in order in the right first column of the forward patent. In the second column on the right, the patent numbers of the second citation patents cited by the first citation patent are listed in order, and in the third column on the right, the third citation patents cited by the second citation patent are cited. The patent numbers of the forward patents are listed in such a way that the number of patents is added in order from the center to the right until there are no cited patents. The patent numbers are recorded in descending order starting from the number of patents in which the number of patents exist, and in the first row of each column of the forward patent, the patent numbers are recorded sequentially in descending order starting from the patent in which the number of patents citing the most patent is present. Create a citation relationship table.

When the citation relationship table generated in this way is displayed on the screen, the investigation patent is used as the reference node, the patent number of the first column on the left of the backward patent is listed as the first node, and the patent number of the second column on the left is listed as the second node. In such a manner that each node is listed in order, and the patent number of the backward patents is displayed as a node by adding the number of nodes from the center to the left until there is no cited patent, and the first right of the forward patent is displayed. The patent number of the column is listed as the first node, and the patent number of the right second column is listed as the second node. The nodes are added in order from the center to the right until there is no cited patent. By way of method, the patent number of forward patents is listed and displayed as nodes, and each node is marked with the patent number and also cited or cited. And when the present patent that is, when the sub-nodes exist to display the identification tags that the child node exists, the parent node to show the two-dimensionally arranged in the x and y axes plane (see Fig. 6).

On the other hand, by storing such a series of processes as a computer program and stored in a recording medium, it is preferable to install the program in a communication device connected to the Internet to be used in connection with the citation server when citation information is required.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

1 is a block diagram for analyzing citation information according to an embodiment of the present invention;

2 is a flowchart for explaining an embodiment of the present invention;

Figure 3 is an enlarged view showing the number of citations or citations of the cited patent of the present invention,

4 is a diagram illustrating a method of using a patent citation or cited information;

5 shows an example for analyzing a main patent using the cited or cited patents of the present invention;

And,

6 is a diagram illustrating a citation relationship table according to an embodiment of the present invention on a screen.

Description of the Related Art [0002]

110: input device 111: control unit

112: input unit 115: memory

120: Internet 130: Citation Server

132: table creation unit 133: search means

134: database

Claims (11)

(a) inputting a patent number of an investigation patent to examine a citation relationship; (b) retrieving patent numbers of cited patents cited at the time of filing of the research patent and storing them as a backward patent; (c) retrieving patent numbers of cited patents cited by the research patent and storing the patent number as a forward patent; (d) generating a citation relationship table listing patent numbers of backward patents on the left side and patent numbers of forward patents on the right side; And (e) Referring to the generated citation relationship table, the patent numbers of the backward patents are listed in order on the left side, and the patent numbers of the forward patents are listed on the right side in order, based on the research patent. Displaying the association between the research patent, the backward patent and the forward patent in two dimensions on an axial plane; Including; Here, according to the number of times the patent number of the backward patent is cited sequentially listed on the Y axis, By sequentially listing the patent numbers of the forward patent based on the number of times cited, Citation information analysis method for patent information analysis, characterized in that to provide a four-minute technical classification table that can identify the trend of the technology. The method of claim 1, According to the number of citations of the patent number of the backward patent are sequentially listed on the Y-axis, based on the average value of the number of citations of the backward patent to the upper and lower side of the X-axis and listed, According to the number of citations of the patent number of the forward patent sequentially listed on the basis of the X-axis, based on the average value of the number of citations of the forward patent based on the analysis of the patent information characterized in that the list is separated into the upper and lower sides of the X-axis How to analyze citation information. delete delete delete delete delete delete delete delete (a) inputting a patent number of an investigation patent to examine a citation relationship; (b) retrieving patent numbers of cited patents cited at the time of filing of the research patent and storing them as a backward patent; (c) retrieving patent numbers of cited patents cited by the research patent and storing the patent number as a forward patent; (d) generating a citation relationship table listing patent numbers of backward patents on the left side and patent numbers of forward patents on the right side; And (e) Referring to the generated citation relationship table, the patent numbers of the backward patents are listed in order on the left side, and the patent numbers of the forward patents are listed on the right side in order, based on the research patent. Displaying the association of the research patent, the backward patent and the forward patent in two dimensions on an axial plane; Including; Here, according to the number of times the patent number of the backward patent is cited sequentially listed on the Y axis, By sequentially listing the patent numbers of the forward patent based on the number of times cited, A computer-readable recording medium having recorded thereon a program for performing a citation information analysis method for patent information analysis, characterized by providing a four-minute technical classification table that can identify trends of the technology.

Images