CN1324874C - Image scanning device with position line designed on covering plate - Google Patents
Image scanning device with position line designed on covering plate Download PDFInfo
- Publication number
- CN1324874C CN1324874C CNB2004100085383A CN200410008538A CN1324874C CN 1324874 C CN1324874 C CN 1324874C CN B2004100085383 A CNB2004100085383 A CN B2004100085383A CN 200410008538 A CN200410008538 A CN 200410008538A CN 1324874 C CN1324874 C CN 1324874C
- Authority
- CN
- China
- Prior art keywords
- housing
- cover plate
- scanned
- scanning
- image scanning
- 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
Images
Abstract
The present invention provides an image scanning device designed with positioning lines on a cover plate, wherein the cover plate is used for the image scanning device which comprises a scanning window and an optical scanning module, the scanning window is used for placing an object to be scanned, and the optical scanning module is used for scanning the image scanning device. The cover plate faces to the scanning window and is provided with a plurality of positioning lines at one lower surface which is provided with a prearranged pattern, and the colors of the positioning lines and the color of the prearranged pattern have a reduced value with a prearranged degree. Therefore, when the object to be scanned is scanned by the optical scanning module, the position coordinates and the magnitude of the prearranged pattern can be obtained by the positioning lines in the cover plate; when the prearranged pattern treats as a part of the object to be scanned by the image scanning device, the prearranged pattern is deleted from an image obtained by self analysis.
Description
Technical field
The invention relates to a kind of cover plate that is applied to a device of image scanning, particularly relevant for a kind of cover plate, be manufactured with the position of position line on it, further make device of image scanning get rid of the erroneous reflections pattern that does not belong to object to be scanned with the preset pattern on the cover plate of correct location.
Technical background
See also Fig. 1, Fig. 1 is the schematic diagram of known device of image scanning 10.In traditional device of image scanning 10, one scan window 11, a cover plate 12, an optic scan module 13 have been comprised at least.Scanning window 11 is to make with transparent material, mainly carries out image scan in order to carry an object to be scanned for optic scan module.Cover plate 12 is in order to cover scanning window 11, and provide the scanning background of a constant color, with when optic scan module 13 in scanning during object to be scanned, be able to the light that anacamptics scan module 13 is produced, and utilize the principle of color contrast, orient object to be scanned and be positioned at position on the scanning window 12.
In known techniques, because cover plate only provides a fixing background color, if the color of object to be scanned is identical or close with the background color that cover plate is provided just, then device of image scanning can't pick out the border of object to be scanned.For instance, if the background color of cover plate is a white, then when putting into when being the file to be scanned of background color with white, device of image scanning will think that whole cover plate promptly is the border of object to be scanned, causes the real border of object to be scanned to differentiate mistake.In order to solve this problem, known techniques is to utilize the software adjustment to remedy the unconspicuous disappearance in border.But in practical application, the phenomenon of deviation takes place unavoidably.Except the method with the software adjustment, another known solution is to install variable light source in device of image scanning additional, scans the object to be scanned of different colours with the light that utilizes different colourities.But this method must be transformed the optic scan module in the device of image scanning, and relative hardware configuration also need change.Thus, increase the complexity when the overall image scanning means is made, also increased cost simultaneously.
In addition, in No. the 534554th, Taiwan patent announcement, a kind of cover plate of convertible different colours background has been proposed then.This known techniques can be selected to use to more tangible cover plate, therefore for the certain improvement of being positioned with of object to be scanned at the color of object to be scanned.In addition, determine the border of object to be scanned when device of image scanning after, further just can in image processing, do an adjustment with putting askew object to be scanned accidentally, make that the image of scanning gained is no longer crooked.But, therefore must prepare many group cover plates in case of need owing to can't predict the color of object to be scanned.And in the time once must scanning the object to be scanned of many group different colours, the background color of then necessary constantly replacing cover plate.Thus, make that the use of device of image scanning is quite inconvenient.
In order to address the above problem, in No. the 93106688th, the Taiwan patent application, then propose a kind of cover plate design, make device of image scanning by the preset pattern that has different contrast colors on the cover plate, the border of accurately being oriented object to be scanned with preset pattern.Yet this kind has the cover plate of preset pattern, but may be because object to be scanned is too thin or penetrate light easily, and make light that optic scan module produced directly to see through object to be scanned and reflected by preset pattern.Therefore optic scan module will receive wrong reflection signal, make follow-up image processing meeting produce wrong image, and this phenomenon is referred to as anti-scape.
Because every known techniques disappearance in the use is necessary to propose a kind of cover plate design that can effectively locate the pattern on object to be scanned and the cover plate.
Summary of the invention
The purpose of this invention is to provide a kind of cover plate that is applied to device of image scanning, it can accurately locate the preset pattern on the cover plate, therefore can remedy the disappearance that the cover plate with preset pattern causes anti-scape phenomenon easily.
The present invention is a kind of device of image scanning, comprises a cover plate, a housing and an optic scan module.This cover plate is to have a plurality of position lines in a lower surface.This lower surface has a preset pattern, and these position lines are to have a color.This color and this preset pattern are the reduced values with a predetermined extent.Per two position lines in these position lines are a preset space length at interval, is used for determining the position and the size of described each pattern of preset pattern between them.Housing is to be positioned under this cover plate, and utilizes an engaging mechanism to engage one another with this cover plate.This housing has the one scan window for placing an object to be scanned, and this scanning window is towards this lower surface.Optic scan module is positioned at this housing, in order to this file to be scanned on this scanning window is carried out image scan.
By the cover plate with preset pattern of the present invention, can utilize a plurality of position lines, accurately orient the position coordinates of pattern on object to be scanned and the cover plate.Both made device of image scanning analyze wrong image, because size and position that these position lines have been oriented this preset pattern, so device of image scanning can be deleted this preset pattern by this information from analyzing in the gained image.
Description of drawings
Fig. 1 is the schematic diagram of known device of image scanning.
Fig. 2 is a schematic diagram of using device of image scanning of the present invention and object to be scanned.
Fig. 3 is the signal waveform schematic diagram that is produced when optic scan module scans cover plate among Fig. 2.
Fig. 4 is the schematic diagram of file to be scanned and preset pattern among Fig. 2.
Fig. 5 is the optic scan module scanning signal waveform schematic diagram that object to be scanned produced among Fig. 2.
Fig. 6 is the schematic diagram of feed-in type device of image scanning of the present invention.
The figure number explanation
20,30: device of image scanning 201: cover plate
202: housing 203: optic scan module
204: driver module 205: guiding module
206: control circuit 2012: lower surface
2014: preset pattern
2016,2017,2018: position line 2021: engaging mechanism
2022: scanning window 2052: scanning pattern
32: opening 34: outlet
36: stepper motor 37: inlet glove plate
38: outlet glove plate
Embodiment
Below in detail first specific embodiment of the present invention will be described in detail in advance.See also Fig. 2, Fig. 2 is a schematic diagram of using device of image scanning 20 of the present invention and object to be scanned 22.Use device of image scanning 20 of the present invention and comprise a cover plate 201, a housing 202, an optic scan module 203, a driver module 204, a guiding module 205 and a control circuit 206.Have a lower surface 2012 on the cover plate 201, be manufactured with a preset pattern 2014 and a plurality of position lines 2016,2017,2018 on the lower surface 2012.Preset pattern 2014 is made up of black box and grey grid in this specific embodiment, to reach the purpose of location object to be scanned, position line 2016,2017,2018 then is to have the white straight line of constant spacing to each other, and crosses lower surface 2012.Preset pattern 2014 and position line 2016,2017,2018 can be used several different methods and be made, and in this embodiment, are directly to be applied to surface 2012 under the cover plate 201 with rubbing method.
As shown in Figure 2, in this specific embodiment, preset pattern 2014 is draughtboard patterns, and position line then is to cross lower surface 2012.But in other embodiment, position line also can be done straight to streaking lower surface or oblique design of streaking lower surface.Position line mainly is the position in order to the location preset pattern, and the design that therefore further can be accompanied by various different patterns changes, as long as can effectively orient the picture position and size is a category according to the invention.
Housing 202 is to be positioned under the cover plate 201, and engages with cover plate 201 with an engaging mechanism 2021.One scan window 2022 is arranged on the housing 202, carry out image scan for optic scan module 203 in order to put object to be scanned 22.In this specific embodiment, engaging mechanism 2021 is bar linkage structures, the housing 202 or raise from housing 202 so that cover plate 201 can freely be fitted.Cover plate 201 and housing 202 can be used plastifying materials such as ABS and be made, and 2022 need of scanning window are prepared with the material of transparent material.
Behind cover plate 201 subsides and scanning window 2022, optic scan module 203 can begin to carry out image scan.Optic scan module 203 is to drive optic scan module 203 by driver module 204, and guides optic scan module 203 by guiding module 205 and move along one scan path 2052 when scanning.No matter be optic scan module 203 or driver module 204, all controlled by control circuit 206.In this specific embodiment, driver module 204 is based on a stepper motor, cooperates a plurality of gear trains to be finished.205 of guiding modules are two row grooves about planning in housing 202, make optic scan module 203 to move according to set route, and can not be offset, and prevent that scanning errors from producing.
Comprehensively the above when optic scan module 203 begins to scan object to be scanned 22, is to produce light and inswept in proper order object to be scanned 22.Light is learned in the scan module 203 through object to be scanned 22 or cover plate 201 back reflection light echos, again each figure sensing reflection ray and construction goes out the image of object to be scanned gained after scanning usually in the Image Sensor (not shown) that includes via optic scan module 203.See also Fig. 3, Fig. 3 is the signal waveform schematic diagram that is produced when optic scan module 203 scans cover plates 201 among Fig. 2.In Fig. 3, the longitudinal axis is pixel value (Pixel Value), and transverse axis is the window's position.When optic scan module 203 only scans cover plate 201, when promptly directly scanning preset pattern 2014, because preset pattern 2014 is to adopt the draughtboard pattern to arrange, therefore each pixel scanning gained waveform will be as shown in Figure 3 in the optic scan module, it when crest grey, and be black region at trough, then be the position at white position line place when pulse occurring.Therefore, by the appearance of peak value (peak value), and position line spacing original and that learnt, follow-up image processing element just can be known the place, position of knowing two preset pattern in the position line.
Then explain orally when the scanning object to be scanned, why the present invention can clearly locate.See also Fig. 4 and Fig. 5, Fig. 4 is the schematic diagram of file to be scanned 22 and preset pattern 2014 among Fig. 2, and Fig. 5 is the signal waveform schematic diagram that optic scan module 203 scanning objects to be scanned 22 are produced among Fig. 2.When object to be scanned 22 is positioned on the scanning window, look up from scanning window, promptly as shown in Figure 4.After using the present invention, no matter object to be scanned 22 has any being misplaced (as B, C two positions among Fig. 4), the present invention all correctly correspondence goes out the border of object to be scanned.If the color of object to be scanned and pattern close (Fig. 4 position B), then device of image scanning can also be used as the grey grid of the object to be scanned that links to each other the some of object to be scanned, therefore, must orient all pattern position and sizes, this error message be got rid of by position line.
In Fig. 5, the longitudinal axis is pixel value (Pixel Value), and transverse axis is the window's position.When optic scan module 203 scanned, the signal waveform when not scanning object to be scanned 22 as yet should be as shown in Figure 3, but when scanning object to be scanned 22, because the color difference of object to be scanned, so signal waveform will rise and fall to some extent.This moment, device of image scanning 20 just can change the raw video of judging object to be scanned in view of the above.Yet, if object to be scanned is crossed thin or is penetrated light easily, then the figure of Huo Deing will have the waveform of partly understanding with among Fig. 3 identical (as the anti-scenic spot among Fig. 5), but because device of image scanning has judged that this zone belongs to the some of object to be scanned, the part that therefore, will have preset pattern in the image of the last output of known techniques.Use after the present invention, because position line has constant spacing, again by the number that is positioned at pattern between two position lines, then can obtain the size and the orientation of each pattern, therefore, follow-up image processing just can be done a comparison with the image and the preset pattern of scanning gained, and the part that will repeat is handled.
The step of the anti-scape of this processing also can be carried out in the way of scanning.As long as go out scanning area by the position line co, then can draw the position that present optic scan module scans, pattern coordinate that position line is oriented and two of sizes are information integrated again, just can learn that present optic scan module gained signal is to belong to pattern or object to be scanned, and then smoothly wrong signal be got rid of.
In sum, the present invention can effectively get rid of the wrong signal of careless generation, and the sensing signal that does not belong to object to be scanned is got rid of, and produces correct scan-image at last.
Cover plate of the present invention also can be applicable to the feed-in type device of image scanning except can be applicable to above-mentioned platform image scanning means (cover plate can freely lift).See also Fig. 6, Fig. 6 is the schematic diagram of feed-in type device of image scanning 30 of the present invention.The second specific embodiment of the present invention place different with first specific embodiment is the change on the engaging mechanism 2021.In second specific embodiment, engaging mechanism is cover plate 201 to be merged with scanning window four edge joints reserve a shallow storage space and an opening 32, enters in the device of image scanning 30 to make things convenient for object to be scanned.As shown in Figure 6, feed-in type device of image scanning 30 comprises an opening 32, an outlet 34, one stepper motor 36, an inlet glove plate 37 and an outlet glove plate 38 usually.When feed-in type device of image scanning 30 activates, can will be placed in object to be scanned on the inlet glove plate 38 by stepper motor 36 and bring shallow storage space in the opening 32 into.Device of image scanning just begins object to be scanned is carried out image scan afterwards, because required each portion of element of scanning is same as first specific embodiment, therefore repeats no more.Object to be scanned then drives by stepper motor 36 after scanning, leaves device of image scanning 30 to outlet glove plate 38 via outlet 34.
Can clearly understand the design that is position line on the cover plate that the present invention emphasized from above description.Promptly reach to a certain degree position line by contrast and preset pattern, through size and the position of optic scan module scanning metapedes with the resolution preset pattern, and then correctly orient the place, border of object to be scanned and analyze the different of pattern and object to be scanned, make device of image scanning be analyzed correct scan-image.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (15)
1, a kind of device of image scanning is characterized in that comprising:
One cover plate, this cover plate is to make a plurality of position lines in a lower surface, this lower surface has a preset pattern, these position lines are to have a predetermined color, this predetermined color and this preset pattern are the reduced values with a predetermined extent, the preset space length at interval of per two position lines in these position lines wherein is used for determining the position and the size of described each pattern of preset pattern between them;
One housing is positioned under this cover plate, is to utilize an engaging mechanism to engage one another with this cover plate, and this housing has the one scan window for placing an object to be scanned, and this scanning window is towards this preset pattern of this lower surface; And
One optic scan module is positioned at this housing, in order to this object to be scanned on this scanning window is carried out image scan.
2, device of image scanning as claimed in claim 1 is characterized in that: further comprise a driver module, it is to be positioned at this housing, in order to drive this optic scan module to move.
3, device of image scanning as claimed in claim 1 is characterized in that: further comprise a guiding module, be positioned at this housing, in order to guide this optic scan module along the one scan path movement.
4, device of image scanning as claimed in claim 1 is characterized in that: further comprise a control circuit, be positioned at this housing, in order to control this optic scan module.
5, device of image scanning as claimed in claim 1 is characterized in that: this engaging mechanism is a connecting rod, for this cover plate optionally paste and this housing or certainly this housing raise.
6, device of image scanning as claimed in claim 1 is characterized in that: this engaging mechanism is that this cover plate is pasted and this housing, and keeps an opening, enters for this object to be scanned, and is placed on this scanning window.
7, a kind of cover plate that is applied in the device of image scanning, this device of image scanning comprises an one scan window and an optic scan module, this scanning window is in order to put an object to be scanned, this optic scan module is in order to scan this object to be scanned, it is characterized in that: this cover plate is towards this scanning window, and make a plurality of position lines in a lower surface, this lower surface has a preset pattern, these position lines are to have a color, this color and this preset pattern are the reduced values with a predetermined extent, the preset space length at interval of per two position lines in these position lines wherein is used for determining the position and the size of described each pattern of preset pattern between them.
8, a kind of platform image scanning means is characterized in that comprising:
One cover plate, this cover plate is to make a plurality of position lines in a lower surface, this lower surface has a preset pattern, these position lines are to have a predetermined color, this predetermined color and this preset pattern are the reduced values with a predetermined extent, the preset space length at interval of per two position lines in these position lines wherein is used for determining the position and the size of described each pattern of preset pattern between them;
One housing, being positioned under this cover plate, is to utilize a connecting rod to engage one another with this cover plate, for this cover plate optionally paste and this housing or certainly this housing raise, this housing has the one scan window for placing an object to be scanned, and this scanning window is towards this preset pattern of this lower surface; And
One optic scan module is positioned at this housing, in order to this object to be scanned on this scanning window is carried out image scan.
9, platform image scanning means as claimed in claim 8 is characterized in that: further comprise a driver module, it is to be positioned at this housing, in order to drive this optic scan module to move.
10, platform image scanning means as claimed in claim 8 is characterized in that: further comprise a guiding module, be positioned at this housing, in order to guide this optic scan module along the one scan path movement.
11, platform image scanning means as claimed in claim 8 is characterized in that: further comprise a control circuit, be positioned at this housing, in order to control this optic scan module.
12, a kind of feed-in type device of image scanning is characterized in that comprising:
One cover plate, this cover plate is to make a plurality of position lines in a lower surface, this lower surface has a preset pattern, these position lines are to have a predetermined color, this predetermined color and this preset pattern are the reduced values with a predetermined extent, the preset space length at interval of per two position lines in these position lines wherein is used for determining the position and the size of described each pattern of preset pattern between them;
One housing is positioned under this cover plate, and this housing has the one scan window for placing an object to be scanned, this housing and this cover plate be mutually lock and, and keep an opening, and entering and be placed on this scanning window for this object to be scanned, this scanning window is towards this preset pattern of this lower surface; And
One optic scan module is positioned at this housing, in order to this object to be scanned on this scanning window is carried out image scan.
13, feed-in type device of image scanning as claimed in claim 12 is characterized in that: further comprise a driver module, it is to be positioned at this housing, in order to drive this optic scan module to move.
14, feed-in type device of image scanning as claimed in claim 12 is characterized in that: further comprise a guiding module, be positioned at this housing, in order to guide this optic scan module along the one scan path movement.
15, feed-in type device of image scanning as claimed in claim 12 is characterized in that: further comprise a control circuit, be positioned at this housing, in order to control this optic scan module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100085383A CN1324874C (en) | 2004-03-25 | 2004-03-25 | Image scanning device with position line designed on covering plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100085383A CN1324874C (en) | 2004-03-25 | 2004-03-25 | Image scanning device with position line designed on covering plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1674625A CN1674625A (en) | 2005-09-28 |
| CN1324874C true CN1324874C (en) | 2007-07-04 |
Family
ID=35046867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100085383A Expired - Fee Related CN1324874C (en) | 2004-03-25 | 2004-03-25 | Image scanning device with position line designed on covering plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1324874C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI574543B (en) * | 2014-10-17 | 2017-03-11 | 虹光精密工業股份有限公司 | Scanning device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH089108A (en) * | 1994-06-22 | 1996-01-12 | Murata Mach Ltd | Image reader |
| US6229629B1 (en) * | 1997-09-12 | 2001-05-08 | Mustek Systems Inc. | Device and method for quick and precise determination of scan start point for image scanner |
| KR20010046214A (en) * | 1999-11-11 | 2001-06-05 | 윤종용 | Method for detecting document size of flat-bed scanner system |
| JP2001285586A (en) * | 2000-03-30 | 2001-10-12 | Sharp Corp | Image reader |
| CN1361500A (en) * | 2000-12-29 | 2002-07-31 | 鸿友科技股份有限公司 | Automatic image cutting out method |
-
2004
- 2004-03-25 CN CNB2004100085383A patent/CN1324874C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH089108A (en) * | 1994-06-22 | 1996-01-12 | Murata Mach Ltd | Image reader |
| US6229629B1 (en) * | 1997-09-12 | 2001-05-08 | Mustek Systems Inc. | Device and method for quick and precise determination of scan start point for image scanner |
| KR20010046214A (en) * | 1999-11-11 | 2001-06-05 | 윤종용 | Method for detecting document size of flat-bed scanner system |
| JP2001285586A (en) * | 2000-03-30 | 2001-10-12 | Sharp Corp | Image reader |
| CN1361500A (en) * | 2000-12-29 | 2002-07-31 | 鸿友科技股份有限公司 | Automatic image cutting out method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1674625A (en) | 2005-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5399205B2 (en) | Inspection device for inspection object and position correction device for electronic substrate | |
| US8675992B2 (en) | Digital microscope slide scanning system and methods | |
| CN1247994C (en) | Textile surface analysis method and its system | |
| US20110235868A1 (en) | Inspection System | |
| CN1517702A (en) | Appearance detector and appearance detection method | |
| US20110069320A1 (en) | Inspecting system and inspecting method | |
| CN101078872A (en) | Transmission type film test card for camera test and its usage method | |
| CN106713693A (en) | Texture scanner | |
| EP0444137A1 (en) | Method for orienting a dual mouse optical scanner | |
| US6256066B1 (en) | High-resolution image pickup method and apparatus therefor | |
| JP5461841B2 (en) | Inspection device for inspection object | |
| CN1324874C (en) | Image scanning device with position line designed on covering plate | |
| CN108548824A (en) | PVC facial mask detection method and device | |
| CN113256568A (en) | Machine vision plate counting general system and method based on deep learning | |
| CN101340507B (en) | Image scanning apparatus | |
| US20020070363A1 (en) | Defect inspection method for three-dimensional object | |
| CN1115552C (en) | Detector for light ray emitted from plane light source | |
| CN1671170A (en) | Image scanner with special pattern on cover board | |
| CN114758346A (en) | High-precision image global microscopic printing document identification system | |
| CN105491264B (en) | Device of image scanning and its localization method and corrector strip | |
| CN1177295C (en) | Method of judging whether to have missing scan line in the scanned image | |
| CN1160939C (en) | Scanner able to detect boundary of object to be scanned | |
| CN1088302C (en) | Method for detecting longitudinal amplification ratio error of image scanner | |
| CN1140103C (en) | Method and device for locating scan start point of image scanner | |
| CN220305142U (en) | Display panel defect detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YUDONG PLASM TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHISHEN SCIENCE + TECHNOLOGY CO. LTD. Effective date: 20070119 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070119 Address after: Wilmington Delaware Applicant after: Yudong Electric Slurry Technology Co., Ltd. Address before: Taipei city of Taiwan Province Applicant before: Zhishen Science and Technology Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YUDONG PLASMA TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: YUDONG PLASM TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Wilmington Delaware Patentee after: Yudong Plasm Technology Co., Ltd. Address before: Wilmington Delaware Patentee before: Yudong Electric Slurry Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 |