Inventor · disambiguated record
Shinji Yamakawa
Also filed as: YAMAKAWA SHINJI
27 granted patents·2 pending applications·855 citations·filing 1988–2019
97Inventor score
Top patents by PatentIndex Score
29 records- 0188US11472907B2Polymerization catalyst composition, polymer manufacturing method, polymer, rubber composition, and tireBRIDGESTONE CORP·Filed 2018·Granted Oct 18, 2022·2 cites·10 claims
- 0287US5751854AOriginal-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination systemRICOH KK·Filed 1996·Granted May 12, 1998·181 cites·4 claims
- 0386US7663783B2Image-processing device processing image data by judging a detected and expanded medium-density field as a non-character edge fieldRICOH KK·Filed 2006·Granted Feb 16, 2010·8 cites·4 claims
- 0486US5892595AImage reading apparatus for correct positioning of color component values of each picture elementRICOH KK·Filed 1997·Granted Apr 6, 1999·106 cites·17 claims
- 0584US5809366AMethod and system for calibrating a color copierRICOH KK·Filed 1996·Granted Sep 15, 1998·118 cites·50 claims
- 0683US8917903B2Image inspection apparatus, image forming apparatus, image inspection method, and image inspection programYAMAKAWA SHINJI·Filed 2012·Granted Dec 23, 2014·4 cites·6 claims
- 0783US6965695B2Method and system for processing character edge area dataRICOH KK·Filed 2001·Granted Nov 15, 2005·25 cites·59 claims
- 0880US7085013B2Image processing apparatus including low-linear-density dot region detection unit, and image forming apparatus including the sameRICOH KK·Filed 2003·Granted Aug 1, 2006·16 cites·8 claims
- 0979US8810861B2Image processing apparatus, image noise detecting method, and computer-readable recording medium which averages pixel values of multiple pixels aligned in the sub-scanning directionYAMAKAWA SHINJI·Filed 2012·Granted Aug 19, 2014·4 cites·4 claims
- 1079US6655861B2Image processing apparatus including low-linear-density dot region detection unit, and image forming apparatus including the sameRICOH KK·Filed 2002·Granted Dec 2, 2003·15 cites·20 claims
- 1178US5465160AComposite image forming apparatus for automatically combining document and image charactersRICOH KK·Filed 1994·Granted Nov 7, 1995·67 cites·25 claims
- 1278US5444518AImage forming apparatus which adds identification information to recorded images to prevent forgeryRICOH KK·Filed 1993·Granted Aug 22, 1995·47 cites·9 claims
- 1377US6272248B1Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination systemRICOH KK·Filed 1998·Granted Aug 7, 2001·113 cites·2 claims
- 1476US8374432B2Image processing apparatus, image forming apparatus, image processing method, and computer program productRICOH CO LTD·Filed 2009·Granted Feb 12, 2013·4 cites·5 claims
- 1574US8055084B2Image processing device, image compression method, image compression program, and recording mediumRICOH CO LTD·Filed 2006·Granted Nov 8, 2011·4 cites·14 claims
- 1674US5862434AMethod and apparatus for forming an image on an image transfer medium and a method of forming an image using the image transfer mediumRICOH KK·Filed 1997·Granted Jan 19, 1999·22 cites·28 claims
- 1770US12084536B2Polybutadiene, method of producing polybutadiene, polybutadiene composition, tire, and resin memberBRIDGESTONE CORP·Filed 2019·Granted Sep 10, 2024·0 cites·16 claims
- 1869US8538086B2Image inspection apparatus, image inspection method, and computer program productYAMAKAWA SHINJI·Filed 2010·Granted Sep 17, 2013·2 cites·9 claims
- 1965US7139100B2Image-processing device processing image data by judging a detected and expanded medium-density field as a non-character edge fieldRICOH KK·Filed 2002·Granted Nov 21, 2006·5 cites·8 claims
- 2065US6014462AImage processing apparatus and method for distinguishing alphanumeric symbols on a white background and those on a mesh pattern and individually processing such image dataRICOH KK·Filed 1997·Granted Jan 11, 2000·30 cites·49 claims
- 2164US5333211AImage processing apparatus for preventing occurrence of moire in a reconstructed imageRICOH KK·Filed 1992·Granted Jul 26, 1994·31 cites·9 claims
- 2262US2010188714A1Image inspection system, image inspection method, and computer-readable medium storing an image inspection programRICOH KK·Filed 2009·Application pending·0 cites
- 2360US10153244B2Display DeviceJAPAN DISPLAY INC·Filed 2017·Granted Dec 11, 2018·1 cites·7 claims
- 2456US5801844AImage processing apparatusRICOH KK·Filed 1995·Granted Sep 1, 1998·23 cites·13 claims
- 2545US5206718AColor image processor for creating shadows and masksRICOH KK·Filed 1990·Granted Apr 27, 1993·9 cites·28 claims
- 2645US5204752AImage processing apparatus having shadow composition capability using binary data thinning and thickening circuits and preset thinning and thickening width dataRICOH KK·Filed 1992·Granted Apr 20, 1993·14 cites·9 claims
- 2744US2008232683A1Image processing apparatus, image processing method and computer program productRICOH KK·Filed 2008·Application pending·0 cites
- 2837US4942542AImage processing computer system optimized to reduce idle time of computerDAINIPPON SCREEN MFG·Filed 1988·Granted Jul 17, 1990·4 cites·3 claims
- 2930US5565993AImage processing apparatus for flexibly changing image data using a selective addressing scheme on a memory storing the image dataRICOH KK·Filed 1993·Granted Oct 15, 1996·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →