Inventor · disambiguated record
Tomohisa Ishikawa
Also filed as: ISHIKAWA TOMOHISA
24 granted patents·6 pending applications·509 citations·filing 1982–2024
95Inventor score
Files withFUJI XEROX CO LTD8FUJITSU LTD6CASIO COMPUTER CO LTD5FUJIFILM BUSINESS INNOVATION CORP3FUJITSU OPTICAL COMPONENTS LTD3
Top patents by PatentIndex Score
30 records- 0193US4437378AElectronic musical instrumentCASIO COMPUTER CO LTD·Filed 1982·Granted Mar 20, 1984·55 cites·5 claims
- 0292US5153751AHolographic display elementCENTRAL GLASS CO LTD·Filed 1991·Granted Oct 6, 1992·132 cites·14 claims
- 0388US5936753AOptical network systemFUJITSU LTD·Filed 1997·Granted Aug 10, 1999·86 cites·18 claims
- 0485US6269204B1Method and system for monitoring of optical transmission linesFUJITSU LTD·Filed 1999·Granted Jul 31, 2001·72 cites·20 claims
- 0579US9658805B2Information processing apparatus, system, storage medium, and information processing method for establishing communication pathFUJI XEROX CO LTD·Filed 2015·Granted May 23, 2017·4 cites·15 claims
- 0675US10356276B2Image processing apparatus, image forming apparatus, and computer readable mediumFUJI XEROX CO LTD·Filed 2016·Granted Jul 16, 2019·2 cites·12 claims
- 0772US5854702AOptical telecommunication moduleFUJITSU LTD·Filed 1996·Granted Dec 29, 1998·43 cites·5 claims
- 0871US5677779AOptical communications moduleFUJITSU LTD·Filed 1995·Granted Oct 14, 1997·47 cites·12 claims
- 0967US4757736AElectronic musical instrument having rhythm-play function based on manual operationCASIO COMPUTER CO LTD·Filed 1986·Granted Jul 19, 1988·19 cites·29 claims
- 1066US8364045B2Wavelength control method and optical transmission deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2010·Granted Jan 29, 2013·2 cites·12 claims
- 1163US7642495B2Light source error detection apparatus and methodFUJITSU LTD·Filed 2008·Granted Jan 5, 2010·3 cites·13 claims
- 1259US4656428ADistorted waveform signal generatorCASIO COMPUTER CO LTD·Filed 1985·Granted Apr 7, 1987·15 cites·8 claims
- 1357US9552621B2Image processing apparatus, image forming apparatus, and computer readable mediumFUJI XEROX CO LTD·Filed 2014·Granted Jan 24, 2017·0 cites·15 claims
- 1457US2024246496A1Resin-molded articleMORIROKU TECH COMPANY LTD·Filed 2024·Application pending·0 cites
- 1555US2024394134A1Information processing system and non-transitory computer readable medium storing programFUJIFILM BUSINESS INNOVATION CORP·Filed 2023·Application pending·0 cites
- 1653US9215344B2Image forming apparatus, image processing apparatus, image forming method, image processing method, and non-transitory computer readable mediumFUJI XEROX CO LTD·Filed 2014·Granted Dec 15, 2015·0 cites·15 claims
- 1752US2017364513A1Document management server, document management device, document management system, non-transitory computer readable medium storing document management program, and document management methodFUJI XEROX CO LTD·Filed 2017·Application pending·0 cites
- 1850US11689293B2Control device of modulating signal and methodFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Jun 27, 2023·0 cites·10 claims
- 1949US11368595B2Image forming apparatus, non-transitory computer readable medium, and image forming systemFUJIFILM BUSINESS INNOVATION CORP·Filed 2018·Granted Jun 21, 2022·0 cites·12 claims
- 2049US2013226977A1Document management server, document management device, document management system, non-transitory computer readable medium storing document management program, and document management methodISHIKAWA TOMOHISA·Filed 2012·Application pending·0 cites
- 2148US11146706B2Image forming apparatus, non-transitory computer readable medium storing program, and image forming systemFUJIFILM BUSINESS INNOVATION CORP·Filed 2018·Granted Oct 12, 2021·0 cites·20 claims
- 2245US11881418B2Wafer cleaning apparatusDISCO CORP·Filed 2021·Granted Jan 23, 2024·0 cites·3 claims
- 2345US4481853AElectronic keyboard musical instrument capable of inputting rhythmic patternsCASIO COMPUTER CO LTD·Filed 1982·Granted Nov 13, 1984·10 cites·13 claims
- 2442US2016218799A1Optical modulation control apparatus, transmitter, and optical output waveform control methodFUJITSU OPTICAL COMPONENTS LTD·Filed 2014·Application pending·0 cites
- 2539US2011055820A1Software version-up/addition managing apparatus, multifunction apparatus, software version-up/addition managing method and computer readable mediumFUJI XEROX CO LTD·Filed 2010·Application pending·0 cites
- 2638US9521290B2Image processing apparatus, image forming apparatus, image processing method, and non-transitory computer readable medium for detecting difference between imagesFUJI XEROX CO LTD·Filed 2015·Granted Dec 13, 2016·0 cites·11 claims
- 2737US10440090B2Information processing apparatus, information processing system, information processing method, and non-transitory computer readable mediumFUJI XEROX CO LTD·Filed 2015·Granted Oct 8, 2019·0 cites·13 claims
- 2837US5859936AOptical beam splitting device and method of controlling optical beam outputsFUJITSU LTD·Filed 1997·Granted Jan 12, 1999·8 cites·9 claims
- 2937US5333071AHolographic display apparatusCENTRAL GLASS CO LTD·Filed 1991·Granted Jul 26, 1994·7 cites·9 claims
- 3034US4972755AElectronic musical instrument having automatic sound signal generation and a rhythm-play function based on manual operationCASIO COMPUTER CO LTD·Filed 1989·Granted Nov 27, 1990·4 cites·37 claims
Join the waitlist — get patent alerts
Get an alert when Tomohisa Ishikawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →