Inventor · disambiguated record
Hisao Shirasawa
Also filed as: SHIRASAWA HISAO
21 granted patents·2 pending applications·579 citations·filing 1992–2019
96Inventor score
Top patents by PatentIndex Score
23 records- 0191US7310167B2Color converting device emphasizing a contrast of output color data corresponding to a black characterRICOH KK·Filed 2006·Granted Dec 18, 2007·14 cites·25 claims
- 0290US7454528B2Image output apparatus using close range radio contact wherein radio contact element is attached to document on which an image is recordedRICOH KK·Filed 2005·Granted Nov 18, 2008·13 cites·20 claims
- 0389US7864371B2Image processing apparatus, image processing method, and computer productRICOH CO LTD·Filed 2008·Granted Jan 4, 2011·12 cites·18 claims
- 0487US5696842AImage processing system for adaptive coding of color document imagesRICOH KK·Filed 1994·Granted Dec 9, 1997·114 cites·21 claims
- 0587US5299025AMethod of coding two-dimensional data by fast cosine transform and method of decoding compressed data by inverse fast cosine transformRICOH KK·Filed 1992·Granted Mar 29, 1994·85 cites·10 claims
- 0685US6226011B1Color conversion method for a color matching, a method for expanding a function of a program module and a color conversion method using the method for expanding a function of a program moduleRICOH KK·Filed 1998·Granted May 1, 2001·91 cites·10 claims
- 0784US7072084B2Color converting device emphasizing a contrast of output color data corresponding to a black characterRICOH KK·Filed 2002·Granted Jul 4, 2006·23 cites·16 claims
- 0883US8115836B2Image reproducing apparatusMIYAHARA SEIJI·Filed 2006·Granted Feb 14, 2012·9 cites·11 claims
- 0983US5689590ABackground noise removing apparatus and method applicable to color image processing apparatusRICOH KK·Filed 1995·Granted Nov 18, 1997·81 cites·33 claims
- 1080US7564604B2Color signal processing and color profile creation for color image reproductionRICOH KK·Filed 2004·Granted Jul 21, 2009·28 cites·14 claims
- 1180US6796629B2Color image processing apparatus, color image forming method, and recording mediumRICOH KK·Filed 2003·Granted Sep 28, 2004·18 cites·11 claims
- 1279US7710600B2Image processing apparatus and method thereofRICOH KK·Filed 2006·Granted May 4, 2010·6 cites·6 claims
- 1379US6137595AColor conversion processing method for color matching and a processor readable medium storing a program for implementing the color conversion processing methodRICOH KK·Filed 1998·Granted Oct 24, 2000·59 cites·38 claims
- 1478US8045222B2Image processing method, image processing apparatus, computer program product, and recording medium for image processingRICOH CO LTD·Filed 2007·Granted Oct 25, 2011·5 cites·18 claims
- 1576US6839460B2Image processing method, image processing apparatus and recording mediumRICOH KK·Filed 2001·Granted Jan 4, 2005·12 cites·9 claims
- 1670US7962658B2Image output apparatus using close range radio contact wherein radio contact element is attached to document on which an image is recordedRICOH CO LTD·Filed 2008·Granted Jun 14, 2011·2 cites·3 claims
- 1769US8111423B2Image processing device and image processing methodMIYAHARA SEIJI·Filed 2008·Granted Feb 7, 2012·2 cites·8 claims
- 1866US10812685B2Color tone control device and image forming apparatusSHIRASAWA HISAO·Filed 2019·Granted Oct 20, 2020·1 cites·17 claims
- 1965US8506919B2Fine powder of single crystalline diamond particles and a method for the production thereofSAITO NOBUYUKI·Filed 2006·Granted Aug 13, 2013·2 cites·4 claims
- 2057US7362896B2Image processing method, image processing apparatus and recording mediumRICOH KK·Filed 2004·Granted Apr 22, 2008·2 cites·45 claims
- 2142US2014240340A1Color profile generating apparatus, image processing apparatus, image processing system, method of generating color profile, and recording medium storing a program for generating color profileSHIRASAWA HISAO·Filed 2014·Application pending·0 cites
- 2239US2004126009A1Image processing apparatus, image processing method, and image processing programFiled 2003·Application pending·0 cites
- 2338US9546093B2Minute diamond powder, method for collecting the same and slurry comprisng the same in suspensionMORITA YOUICHI·Filed 2008·Granted Jan 17, 2017·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →