CN1153146C - Geteway level computer network virus preventing method and device - Google Patents
Geteway level computer network virus preventing method and device Download PDFInfo
- Publication number
- CN1153146C CN1153146C CNB011091789A CN01109178A CN1153146C CN 1153146 C CN1153146 C CN 1153146C CN B011091789 A CNB011091789 A CN B011091789A CN 01109178 A CN01109178 A CN 01109178A CN 1153146 C CN1153146 C CN 1153146C
- Authority
- CN
- China
- Prior art keywords
- virus
- data
- acting server
- geteway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 241000700605 Viruses Species 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000002155 anti-virotic effect Effects 0.000 claims abstract description 47
- 238000011100 viral filtration Methods 0.000 claims description 25
- 230000003612 virological effect Effects 0.000 claims description 7
- 241001269238 Data Species 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 230000000644 propagated effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Computer And Data Communications (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention relates to a gateway level computer network virus preventing method and a device thereof. The virus preventing device in a gateway is used for filtering viruses for file data and mail data flowing through the gateway. The virus preventing device comprises a central control unit, a data communication interface, an electric wiping and writing read-only memory, a data buffer memory area and storage equipment. Before the viruses enter a network server or an intranet, the viruses are detected and removed for preventing network users and the intranet from being infected by the viruses; the hardware is irrelevant to the protected hardware and an operating system; the present invention saves the expense of upgrading and maintaining anti-virus products, and prevents the viruses of the intranet from being propagated to the Internet and an inner server.
Description
Technical field
The present invention relates to a kind of method of Geteway level computer network virus preventing, refer to a kind ofly at computer network especially, particularly the gateway inner filtration of internet and the method for taking precautions against computer virus belong to the computer network security technology field.
Background technology
Be accompanied by development of computer, computer virus also generates in large quantities; Computer virus is threatening the safety of computer data, is disturbing people to work normally, is seriously perplexing the computing machine and the network user thereof, has brought the loss that can't estimate to the mankind.The development of Internet technology is bringing the unprecedented while easily for the mankind, also brought bigger facility for the extensive widespread of computer virus, computer virus is propagated by the internet unbridledly, perplexing the increasing computer user of every field, therefore, killing computer virus and prevent that the task of its propagation is more and more important.
Traditional computing machine anti-virus method carries out on single computing machine usually, even this computer bit also is like this among the internet.This method has following shortcoming:
At first; the method of unit killing virus can only be removed the file that this machine inside is infected by the virus extremely; and in time do not handle for the viral source of really concealing in Internet Server; if this server is not protected; may make all users in the whole internet and Intranet all be subjected to virus attacks rapidly and widely; moreover; may be become new viral source again by the computing machine of virus infections; it is subjected to the control of virus; attack more computing machine; bring a series of chain reaction thus; strengthened viral firing area; increased viral harmfulness, finally caused the internet paralysis, to the loss of bringing on a disaster property of Internet user.
Secondly, existing various anti-virus softwares are relevant with the operating platform that it is moved, and it needs to upgrade continually separately, upgrade, maintain and supervise, and this will inevitably cause a large amount of time and the waste of resource.
In addition, because traditional fire wall only possesses the ability of refusal unauthorized access, and the malicious code (as ActiveX control and java applet) in e-mail virus and some internet web page pages can firewall-penetrating, Intranet is attacked, made the enterprise that is attacked suffer tremendous loss.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method of Geteway level computer network virus preventing, its real-time monitoring stream is through the various data stream of gateway or fire wall, make virus also do not enter before the webserver or the intranet with regard to detected, remove or handle, the danger of avoiding the user that is connected with network and intranet to be infected on a large scale by virus.
Another purpose of the present invention is to provide a kind of method of Geteway level computer network virus preventing, and this method writes down Virus Logs in interception and when killing except that virus and reports to the police, and then virus-free data stream is forwarded to the destination.
Another object of the present invention is to provide a kind of method of Geteway level computer network virus preventing; the hardware and the operating system independent of the hardware Anti Virus Gateway of this method and protected server and network user's computing machine, the expense of save the upgrading of resource and anti-virus product, safeguarding.
A further object of the present invention is to provide a kind of method of Geteway level computer network virus preventing, and it prevents that virus on each in-house network subscriber's main station is to the propagation of internet and internal server.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of Geteway level computer network virus preventing, be arranged on anti-virus device in the gateway by the virus filtration method of file data and the virus filtration method of mail data, the file data and the mail data of this gateway of flowing through carried out virus filtration in the application layer of gateway; The virus filtration method of described file data comprises the steps:
1, acting server receives the file data that arrives this gateway;
2, duplicate this document data to a data buffer area;
If 3 this document data are not the final stages of this document, acting server directly sends this document data; Enter step 1;
If 4 this document data are final stages of this document, analyze whether this document data are packed data;
5,, enter step 7 if not packed data;
6 if packed data, with this document data decompression;
7, this document data being carried out virus detects;
If 8 do not find virus, enter step 12;
If 9 find virus, write down this virus and warning, remove the virus in this document data then;
10, will revert to former form and send to acting server through this document data that virus detects;
11, acting server resends the All Files data of this document; Enter step 13;
12, acting server sends the final stage of this document data;
13, finish;
The virus filtration method of described mail data comprises the steps:
1, acting server receives the mail data that arrives this gateway;
2, duplicate the annex of this mail to a data buffer area;
3, the annex with this mail is converted to the form that can scan;
4, whether the annex of analyzing this mail is compressed format;
5,, enter step 7 if not packed data;
6 if packed data, and the annex of this mail is decompressed;
7, the annex to this mail carries out the virus detection;
If 8 do not find virus, enter step 12;
If 9 find virus, write down this virus and report to the police, remove the virus in the annex of this mail then;
10, will revert to former form and send to acting server through this mail data that virus detects;
11, acting server resends all mail datas of this mail; Enter step 13;
12, acting server sends all mail datas of this mail;
13, finish.
File data described in the virus filtration method of described file data is the HTTP data.
Described file data described in the virus filtration method of described file data is the FTP data.
Acting server described in the virus filtration method of described file data rises and is http server.
Acting server described in the virus filtration method of described file data is a ftp server.
Mail data described in the virus filtration method of described mail data is the SMTP data.
Acting server described in the virus filtration method of described mail data is a smtp server.
Data buffer described in the virus filtration method of described mail data is a storer.
Be provided with the electrically erasable read only memory of preserving virus filtration software in the described anti-virus device; This virus
Filter software upgrades by the rewriting operation to this electrically erasable read only memory.
The real-time monitoring stream of the present invention is through the various data stream of gateway or fire wall, make virus before not entering the webserver or intranet with regard to detected, remove or handle, the danger of having avoided the user that is connected with network and intranet to be infected on a large scale by virus; Simultaneously, write down Virus Logs and warning, then virus-free data stream is forwarded to the destination in interception and when removing virus extremely; Since the hardware and the operating system independent of its hardware Anti Virus Gateway and protected server and network user's computing machine, the expense of saved the upgrading of resource and anti-virus product, safeguarding; In addition, it has prevented that also virus on each in-house network subscriber's main station is to the propagation of internet and internal server.
Description of drawings
Fig. 1 filters the synoptic diagram of the gateway data of flowing through for anti-virus device of the present invention.
Fig. 2 is the process flow diagram of the present invention one HTTP data filter embodiment.
Fig. 3 is the process flow diagram of the present invention one FTP data filter embodiment.
Fig. 4 is the process flow diagram of the present invention one SMTP data filter embodiment.
Fig. 5 is the structured flowchart of anti-virus device one embodiment of the present invention.
Fig. 6 is the structured flowchart of another embodiment of anti-virus device of the present invention.
Embodiment
As shown in Figure 1, the data 5 that may have virus are sent to Anti Virus Gateway 1 by Internet extranets 2 or intranet 4, and receive by the acting server 12 of Anti Virus Gateway 1, the data 5 that may have virus that acting server 12 receives are copied in the Anti Virus Gateway 1, in the data buffer area 112 of anti-virus device 11, this anti-virus device 11 starts virus filtration softwares the data 5 that this may have virus is filtered; If find virus, this virus filtration software is then removed virus and warning, after the memory storage that is saved in anti-virus device 11 for information about 111 of this virus, this anti-virus device 11 is sent back to acting server 12 with secure data 6, again this secure data 6 is forwarded to next network node by acting server 12.
Above-mentioned acting server 12 can be a http server or a ftp server or a smtp server; This acting server 12 is connected with anti-virus device 11 by the data communication interface of a standard, and this anti-virus device 11 duplicates the file data or the mail data of arrival from acting server 12 by the data communication interface of a standard.
As shown in Figure 1, 2, an anti-virus device 11 filtrations one HTTP file data of flowing through Anti Virus Gateway 1 has following steps:
1, the http proxy server 12 of Anti Virus Gateway 1 receives the HTTP data that arrive this gateway;
2, anti-virus device 11 copies to these HTTP data the data buffer area 112 of one anti-virus device 11;
If the final stage that 3 these HTTP data are not this document, http proxy server 12 directly sends these HTTP data; Enter step 1;
If whether the final stage that 4 these HTTP data are this document, analyzing these HTTP data is packed data;
5,, enter step 7 if not packed data;
6 if packed data, with this HTTP data decompression;
7, these HTTP data being carried out virus detects;
If 8 do not find virus, enter step 12;
If 9 find virus, write down this virus and warning, remove the virus in these HTTP data then;
10, will revert to former form and send to http proxy server 12 through these HTTP data that virus detects;
11, http proxy server 12 resends all HTTP data of this document; Enter step 13;
12, http proxy server 12 sends the final stage of these HTTP data;
13, finish.
Shown in Fig. 1,3, an anti-virus device 11 filters ftp file data of flowing through Anti Virus Gateway 1 and has following steps:
1, the FTP acting server 12 of Anti Virus Gateway 1 receives the FTP data that arrive this gateway;
2, anti-virus device 11 copies to these FTP data the data buffer area 112 of one anti-virus device 11;
If the final stage that 3 these FTP data are not this document, FTP acting server 12 directly sends these FTP data; Enter step 1;
If whether the final stage that 4 these FTP data are this document, analyzing these FTP data is packed data;
5,, enter step 7 if not packed data;
6 if packed data, with this FTP data decompression;
7, these FTP data being carried out virus detects;
If 8 do not find virus, enter step 12;
If 9 find virus, write down this virus and warning, remove the virus in these FTP data then;
10, will revert to former form and send to FTP acting server 12 through these FTP data that virus detects:
11, FTP acting server 12 resends all FTP data of this document; Enter step 13;
12, FTP acting server 12 sends the final stage of these FTP data;
13, finish.
Shown in Fig. 1,4, an anti-virus device 11 filters a SMTP file data of flowing through Anti Virus Gateway 1 and has following steps:
1, the SMTP acting server 12 of Anti Virus Gateway 1 receives the mail data that arrives this gateway;
2, anti-virus device 11 copies to this mail data the data buffer area 112 of one anti-virus device 11;
3, this mail data is converted to the form that can carry out virus scan;
4, whether the annex of analyzing this mail is compressed format;
5,, enter step 7 if not compressed format;
6 if compressed format, and the annex of this mail is decompressed;
7, the annex of this mail carries out the virus detection;
If 8 do not find virus, enter step 12;
If 9 find virus, write down this virus and report to the police, remove the virus in the annex of this mail then;
10, will revert to former form and send to the SMTP acting server through this mail data that virus detects
12；
11, SMTP acting server 12 resends all mail datas of this mail; Enter step 13;
12, SMTP acting server 12 sends all mail datas of this mail;
13, finish.
As shown in Figure 5, the anti-virus device 11 of one embodiment of the invention comprises: a central processing unit 113; One usb 1 15a, this central processing unit 113 is connected with this usb 1 15a, and the other end of this usb 1 15a is connected to acting server 12; Anti-virus device 11 in the present embodiment carries out exchanges data by above-mentioned connection and acting server 12; The electrically erasable read only memory 111 that this above-mentioned central processing unit 113 and is preserved virus filtration software is connected, this central processing unit 113 also is connected with a data buffer area 112 that is made of random access memory simultaneously, this central processing unit 113 deposits file or the mail data that acting server transmits in this data buffer area 112, by the virus filtration software in the operation electrically erasable read only memory 111, this document or mail data are filtered, and then the file or the mail data of safety are returned to acting server 12; When containing virus in file that is filtered or the mail data, these central processing unit 113 controls will have viral file or mail and filtration daily record and be kept among the hard disk 114a; This hard disk is by an external equipment interface, and for example: IDE or scsi interface are connected with this central processing unit 113 (this interface not shown in the figures).
As shown in Figure 6, the anti-virus device 11 of another embodiment of the present invention comprises: a central processing unit 113; One IEEE1394 interface 115b, this central processing unit 113 is connected with this IEEE1394 interface 115b, and the other end of this IEEE1394 interface 115b is connected to acting server 12; Anti-virus device 11 in the present embodiment carries out exchanges data by above-mentioned connection and acting server 12; The electrically erasable read only memory 111 that this above-mentioned central processing unit 113 and is preserved virus filtration software is connected, this central processing unit 113 also is connected with a data buffer area 112 that is made of random access memory simultaneously, this central processing unit 113 deposits file or the mail data that acting server transmits in this data buffer area 112, by the virus filtration software in the operation electrically erasable read only memory 111, this document or mail data are filtered, and then the file or the mail data of safety are returned to acting server 12; When containing virus in file that is filtered or the mail data, these central processing unit 113 controls will have viral file or mail and filtration daily record and be kept among the electric board 114b; This electric board 114b is by an external equipment interface, for example: IDE or scsi interface, and handle 113 devices with these central authorities and be connected (this interface not shown in the figures).
Claims (9)
1, a kind of method of Geteway level computer network virus preventing, it is characterized in that: be arranged on anti-virus device in the gateway by the virus filtration method of file data and the virus filtration method of mail data, the file data and the mail data of this gateway of flowing through carried out virus filtration in the application layer of gateway; The virus filtration method of described file data comprises the steps:
A, acting server receive the file data that arrives this gateway;
B, duplicate this document data to a data buffer area;
If C this document data are not the final stages of this document, acting server directly sends this document data; Enter steps A;
If D this document data are final stages of this document, analyze whether this document data are packed data;
E, if not packed data, enter step G;
F is if packed data, with this document data decompression;
G, this document data are carried out virus detect;
If H does not find virus, enter step L;
If I finds virus, write down this virus and warning, remove the virus in this document data then;
J, will revert to former form and send to acting server through this document data that virus detects;
K, acting server resend the All Files data of this document; Enter step M;
L, acting server send the final stage of this document data;
M, end;
The virus filtration method of described mail data comprises the steps:
A ', acting server receive the mail data that arrives this gateway;
B ', duplicate the annex of this mail to a data buffer area;
C ', the annex of this mail is converted to the form that can scan;
Whether D ', the annex of analyzing this mail are compressed format;
E ', if not packed data, enter step G ';
F ' is if packed data, and the annex of this mail is decompressed;
G ', the annex of this mail is carried out virus detect;
If H ' does not find virus, enter step L ';
If I ' discovery is viral, write down this virus and report to the police, remove the virus in the annex of this mail then;
J ', will revert to former form and send to acting server through this mail data that virus detects;
K ', acting server resend all mail datas of this mail; Enter step M ';
L ', acting server send all mail datas of this mail;
M ', end.
2, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the file data described in the virus filtration method of described file data is the HTTP data.
3, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the file data described in the virus filtration method of described file data is the FTP data.
4, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the described acting server in the virus filtration method of described file data rises and is http server.
5, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the acting server described in the virus filtration method of described file data is a ftp server.
6, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the mail data described in the virus filtration method of described mail data is the SMTP data.
7, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the acting server described in the virus filtration method of described mail data is a smtp server.
8, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: the data buffer described in the virus filtration method of described mail data is a storer.
9, the method for Geteway level computer network virus preventing as claimed in claim 1 is characterized in that: be provided with the electrically erasable read only memory of preserving virus filtration software in the described anti-virus device; This virus filtration software is to upgrade by the rewriting operation to this electrically erasable read only memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011091789A CN1153146C (en) | 2001-03-16 | 2001-03-16 | Geteway level computer network virus preventing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011091789A CN1153146C (en) | 2001-03-16 | 2001-03-16 | Geteway level computer network virus preventing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1375775A CN1375775A (en) | 2002-10-23 |
| CN1153146C true CN1153146C (en) | 2004-06-09 |
Family
ID=4657772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011091789A Expired - Fee Related CN1153146C (en) | 2001-03-16 | 2001-03-16 | Geteway level computer network virus preventing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1153146C (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050182967A1 (en) * | 2004-02-13 | 2005-08-18 | Microsoft Corporation | Network security device and method for protecting a computing device in a networked environment |
| US8136162B2 (en) * | 2006-08-31 | 2012-03-13 | Broadcom Corporation | Intelligent network interface controller |
| CN101350822B (en) * | 2008-09-08 | 2011-06-15 | 南开大学 | Method for discovering and tracing Internet malevolence code |
| CN101958887A (en) * | 2009-07-20 | 2011-01-26 | 新奥特（北京）视频技术有限公司 | Antivirus cluster-based secure file transfer method and system |
| CN101833622B (en) * | 2010-05-10 | 2012-07-18 | 深圳市五巨科技有限公司 | Method and apparatus for checking and killing Trojan of removable storage device of terminal |
| US20150020203A1 (en) | 2011-09-19 | 2015-01-15 | Beijing Qihoo Technology Company Limited | Method and device for processing computer viruses |
| CN102346827B (en) * | 2011-09-19 | 2014-11-05 | 奇智软件（北京）有限公司 | Method and device for handling computer viruses |
| CN104063662B (en) * | 2011-09-19 | 2017-05-03 | 北京奇虎科技有限公司 | Method and device for processing computer virus |
| CN102314571B (en) * | 2011-09-27 | 2014-11-05 | 奇智软件（北京）有限公司 | Method and device for processing computer viruses |
| CN102497425A (en) * | 2011-12-12 | 2012-06-13 | 山东电力研究院 | Malicious software detecting system based on transparent proxy and method thereof |
| CN102651744A (en) * | 2012-05-04 | 2012-08-29 | 华为技术有限公司 | E-mail security management method and E-mail server |
| CN103546448A (en) * | 2012-12-21 | 2014-01-29 | 哈尔滨安天科技股份有限公司 | Network virus detection method and system based on format parsing |
| CN103580948A (en) * | 2012-12-27 | 2014-02-12 | 哈尔滨安天科技股份有限公司 | Method and device for detecting network based on structural-file index information |
| EP3190525A4 (en) * | 2014-10-14 | 2017-08-30 | Digital Arts Inc. | Information processing device and program |
| CN106503556A (en) * | 2016-10-25 | 2017-03-15 | 广东欧珀移动通信有限公司 | The method of data storage, apparatus and system |
| CN107370747A (en) * | 2017-08-14 | 2017-11-21 | 北京奇安信科技有限公司 | A kind of method and device for preventing malicious file from propagating |
| CN112738062B (en) * | 2020-12-25 | 2023-04-07 | 江苏省未来网络创新研究院 | Anti-virus gateway based on user strategy |
-
2001
- 2001-03-16 CN CNB011091789A patent/CN1153146C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1375775A (en) | 2002-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1153146C (en) | Geteway level computer network virus preventing method and device | |
| US11068588B2 (en) | Detecting irregularities on a device | |
| CN1871612A (en) | Network isolation techniques suitable for virus protection | |
| RU2444056C1 (en) | System and method of speeding up problem solving by accumulating statistical information | |
| US8528089B2 (en) | Known files database for malware elimination | |
| CN102082836B (en) | DNS (Domain Name Server) safety monitoring system and method | |
| CN1550950A (en) | Method and system for protecting computer system from malicious software operation | |
| CN1773417A (en) | System and method of aggregating the knowledge base of antivirus software applications | |
| US20060129382A1 (en) | Adaptive intrusion detection for autonomic systems | |
| US20080201722A1 (en) | Method and System For Unsafe Content Tracking | |
| WO2009042915A2 (en) | Whitelist and blacklist identification data | |
| CN101036369A (en) | Offline analysis of packets | |
| RU91202U1 (en) | UNKNOWN Malicious Software Detection System | |
| CN1612532A (en) | Host-based network intrusion detection systems | |
| JPH10501354A (en) | Computer virus trap device | |
| CN101042719A (en) | System and method for killing ROOTKIT | |
| CN101079798A (en) | NAT method and method for realizing access control list | |
| CN1237430C (en) | Mobile sterilization device and its manufacturing method | |
| CN101046836A (en) | System and method for removing ROOTKIT | |
| CN101043322A (en) | Electronic device and communication control method | |
| AU2017204194A1 (en) | Inoculator and antibody for computer security | |
| Tahan et al. | Auto-sign: an automatic signature generator for high-speed malware filtering devices | |
| EP2306356A2 (en) | Asynchronous processing of events for malware detection | |
| CN1282083C (en) | Computer memory virus monitoring method and method for operation with virus | |
| CN1625125A (en) | System environment regulation violation detecting method for client device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LEGEND WANGYU TECHNOLOGY (BEIJING) LTD. Free format text: FORMER OWNER: LIANXIANG (BEIJING) CO. LTD. Effective date: 20050422 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050422 Address after: 100086, room 801-810, CLP information building, 6 South Avenue, Beijing, Haidian District, Zhongguancun Patentee after: Lenovo Wangyu Technology (Beijing) Ltd. Address before: 100085, No. 6, Pioneer Road, Haidian District information industry base, Beijing Patentee before: Lenovo (Beijing) Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING LEADSEC INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER NAME: LEADSEC TECHNOLOGY (BEIJING) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100086, room 801-810, CLP information building, 6 South Avenue, Beijing, Haidian District, Zhongguancun Patentee after: Beijing Leadsec Technology Co.,Ltd. Address before: 100086, room 801-810, CLP information building, 6 South Avenue, Beijing, Haidian District, Zhongguancun Patentee before: Lenovo Wangyu Technology (Beijing) Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040609 Termination date: 20160316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |