Inventor · disambiguated record
Hisashi Ishikawa
Also filed as: ISHIKAWA HISASHI
220 granted patents·23 pending applications·2,757 citations·filing 1979–2025
99Inventor score
Top patents by PatentIndex Score
243 records- 0198US11281950B2Image processing apparatus, image forming system, image processing method and storage mediumCANON KK·Filed 2020·Granted Mar 22, 2022·13 cites·18 claims
- 0298US6273535B1Image forming system and images forming apparatusCANON KK·Filed 1998·Granted Aug 14, 2001·261 cites·34 claims
- 0397US10043118B2Image processing apparatus, image processing method, printing medium and storage mediumCANON KK·Filed 2015·Granted Aug 7, 2018·30 cites·35 claims
- 0496US10733488B2Image processing apparatus, method, and program product changing dot pattern when contact state between dots changes due to landed-dot shiftCANON KK·Filed 2019·Granted Aug 4, 2020·9 cites·19 claims
- 0596US10356282B2Image processing apparatus and color separation processing method by interpolation processing using a multi-dimensional lookup tableCANON KK·Filed 2017·Granted Jul 16, 2019·17 cites·14 claims
- 0696US10194053B2Image forming apparatus and density correction method in image forming apparatus based on correction characteristicsCANON KK·Filed 2016·Granted Jan 29, 2019·21 cites·15 claims
- 0796US10187553B2Color conversion processing apparatus, color conversion processing method and storage mediumCANON KK·Filed 2017·Granted Jan 22, 2019·21 cites·12 claims
- 0896US10073370B2Image processing apparatus, method of controlling same, and image forming apparatusCANON KK·Filed 2016·Granted Sep 11, 2018·20 cites·12 claims
- 0996US9485388B2Image processing apparatus, method, and computer storage medium configured for line correction based on a number of linked dotsCANON KK·Filed 2015·Granted Nov 1, 2016·26 cites·19 claims
- 1096US9462091B2Information processing apparatus, communication method and storage mediumCANON KK·Filed 2015·Granted Oct 4, 2016·17 cites·15 claims
- 1195US10855877B2Image processing apparatus, image processing method and storage mediumCANON KK·Filed 2019·Granted Dec 1, 2020·7 cites·20 claims
- 1295US10545446B2Tone correction image processing based on pixel formation position on a photoreceptorCANON KK·Filed 2016·Granted Jan 28, 2020·11 cites·12 claims
- 1395US10057459B2Image forming apparatus, updating method of gamma correction information, and storage mediumCANON KK·Filed 2016·Granted Aug 21, 2018·17 cites·9 claims
- 1495US10027848B2Image processing apparatus and control method for applying spatial filters to imagesCANON KK·Filed 2016·Granted Jul 17, 2018·21 cites·9 claims
- 1594US10771657B2Image processing apparatus and image processing method quantizing first and second gradation data to generate first and second quantization dataCANON KK·Filed 2019·Granted Sep 8, 2020·13 cites·20 claims
- 1694US10063743B2Image processing apparatus, image processing method, and non-transitory computer-readable storage mediumCANON KK·Filed 2016·Granted Aug 28, 2018·19 cites·21 claims
- 1794US9749496B2Performing halftone processing using intra-cell sum value differences applied so as to correct boundary pixelsCANON KK·Filed 2014·Granted Aug 29, 2017·20 cites·17 claims
- 1894US7477422B2Image recording apparatus, image recording method, method for controlling the image recording apparatus, storage medium storing a program capable of being read by a computer, and image processing methodCANON KK·Filed 2006·Granted Jan 13, 2009·19 cites·27 claims
- 1993US11020985B2Image processing apparatus, image processing method and storage mediumCANON KK·Filed 2020·Granted Jun 1, 2021·5 cites·21 claims
- 2093US10831121B2Image processing apparatus, image processing method and program, and image display apparatus for converting image data according to light intensity utilizing observation characteristicsCANON KK·Filed 2018·Granted Nov 10, 2020·6 cites·18 claims
- 2193US8295598B2Processing method and apparatusINOUE HIROWO·Filed 2008·Granted Oct 23, 2012·19 cites·16 claims
- 2293US6364446B1Printing method and printing apparatusCANON KK·Filed 2000·Granted Apr 2, 2002·60 cites·36 claims
- 2393US5774634AImage processing method and apparatusCANON KK·Filed 1994·Granted Jun 30, 1998·155 cites·14 claims
- 2492US9734439B2Image processing apparatus and method thereofCANON KK·Filed 2014·Granted Aug 15, 2017·20 cites·26 claims
- 2591US7266254B2Data processing apparatus, image processing apparatus, and method thereforCANON KK·Filed 2003·Granted Sep 4, 2007·45 cites·21 claims
- 2691US6915014B1Image processing apparatus and methodCANON KK·Filed 2000·Granted Jul 5, 2005·48 cites·5 claims
- 2790US7432985B2Image processing methodCANON KK·Filed 2004·Granted Oct 7, 2008·46 cites·7 claims
- 2890US7130083B1Image recording apparatus, image recording method, method for controlling the image recording apparatus, storage medium storing a program capable of being read by a computer, and image processing methodCANON KK·Filed 2000·Granted Oct 31, 2006·39 cites·9 claims
- 2990US6526516B1Power control system and method for distribution of power to peripheral devicesCANON KK·Filed 1998·Granted Feb 25, 2003·218 cites·66 claims
- 3090US5818970AImage encoding apparatusCANON KK·Filed 1992·Granted Oct 6, 1998·110 cites·6 claims
- 3189US11321596B2Image processing apparatus, image processing method, and storage medium for generating quantized data for forming an image on a print mediumCANON KK·Filed 2019·Granted May 3, 2022·5 cites·12 claims
- 3289US10896358B2Image processing apparatus, display system, image processing method and storage medium for projecting a moving image onto printed matter in an overlapping mannerCANON KK·Filed 2019·Granted Jan 19, 2021·7 cites·17 claims
- 3389US7986440B2Image processing apparatus, image forming apparatus, and control method thereof, which form an image by applying N-ary processingCANON KK·Filed 2008·Granted Jul 26, 2011·11 cites·18 claims
- 3489US2025332844A1Image processing apparatus, image processing method, non-transitory computer-readable storage medium, and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 3588US9201839B2Information processing apparatus, communication method and storage mediumHARA YUJI·Filed 2012·Granted Dec 1, 2015·11 cites·14 claims
- 3688US7895251B2Random number generating method and random number generating apparatusCANON KK·Filed 2005·Granted Feb 22, 2011·16 cites·8 claims
- 3788US7533949B2Image forming system and image forming apparatusCANON KK·Filed 2007·Granted May 19, 2009·6 cites·8 claims
- 3887US11531854B2Image processing apparatus, image processing method and storage mediumCANON KK·Filed 2020·Granted Dec 20, 2022·2 cites·21 claims
- 3987US8130415B2Image processing apparatus, image forming apparatus, and control method thereof, which form an image by applying N-ary processingYANAI TOMOKAZU·Filed 2011·Granted Mar 6, 2012·7 cites·15 claims
- 4087US7881372B2Image processing device and image processing methodCANON KK·Filed 2006·Granted Feb 1, 2011·9 cites·28 claims
- 4187US7346750B2Memory interleave systemNEC CORP·Filed 2004·Granted Mar 18, 2008·43 cites·17 claims
- 4287US6580460B1System connecting power supply line to image sensing device upon data transportCANON KK·Filed 1998·Granted Jun 17, 2003·108 cites·18 claims
- 4387US6198848B1Method and apparatus for compressing and storing data indicative of a full-color imageCANON KK·Filed 1994·Granted Mar 6, 2001·78 cites·25 claims
- 4486US11192386B2Image processing apparatus, image processing method and storage mediumCANON KK·Filed 2019·Granted Dec 7, 2021·2 cites·18 claims
- 4586US11090946B2Image processing apparatus, image processing method and storage mediumCANON KK·Filed 2019·Granted Aug 17, 2021·4 cites·20 claims
- 4685US10848643B2Color conversion processing apparatus, color conversion processing method, creation method of color conversion LUT and storage mediumCANON KK·Filed 2018·Granted Nov 24, 2020·2 cites·24 claims
- 4785US8406295B2Image processing device and image processing methodISHIKAWA HISASHI·Filed 2010·Granted Mar 26, 2013·5 cites·10 claims
- 4884US11104151B2Image processing apparatus, image processing method and storage mediumCANON KK·Filed 2019·Granted Aug 31, 2021·3 cites·16 claims
- 4984US10769506B2Image processing apparatus and image processing method quantizing gradation data to have a smaller number of gradationsCANON KK·Filed 2019·Granted Sep 8, 2020·4 cites·19 claims
- 5084US8382228B2Image forming apparatus and image forming methodCANON KK·Filed 2011·Granted Feb 26, 2013·3 cites·8 claims
Showing the top 50 of 243 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →