Inventor · disambiguated record
Hirofumi Ogawa
Also filed as: OGAWA HIROFUMI
44 granted patents·10 pending applications·867 citations·filing 1983–2024
98Inventor score
Files withHITACHI LTD9NISHIKAWA RUBBER CO LTD7RICOH KK6FUJI XEROX CO LTD5FUJIFILM BUSINESS INNOVATION CORP4
Top patents by PatentIndex Score
54 records- 0198US7546049B2Image forming device with a control means to correct the fixing control temperatureRICOH LTD·Filed 2006·Granted Jun 9, 2009·79 cites·19 claims
- 0298US7022944B2Image forming apparatus preventing excessive increase in temperature of fixing deviceRICOH KK·Filed 2004·Granted Apr 4, 2006·90 cites·18 claims
- 0398US6628916B2Fixing device preventing rubbing of toner imageRICOH KK·Filed 2001·Granted Sep 30, 2003·107 cites·28 claims
- 0497US7509085B2Image forming apparatus, fixing apparatus and tonerRICOH KK·Filed 2006·Granted Mar 24, 2009·95 cites·16 claims
- 0597US6881927B2Image forming apparatus preventing excessive increase in temperature of fixing deviceRICOH KK·Filed 2002·Granted Apr 19, 2005·85 cites·27 claims
- 0697US6785505B2Fixing device preventing rubbing of toner imageRICOH KK·Filed 2003·Granted Aug 31, 2004·83 cites·8 claims
- 0796US6636709B2Fixing device having temperature detecting member and image forming apparatus using said fixing deviceRICOH KK·Filed 2001·Granted Oct 21, 2003·108 cites·36 claims
- 0884US10035410B2Parting seal and sealing structure of parting portionNISHIKAWA RUBBER CO LTD·Filed 2016·Granted Jul 31, 2018·7 cites·13 claims
- 0984US4952839APhotoconductive device and method of operating the sameHITACHI LTD·Filed 1989·Granted Aug 28, 1990·28 cites·4 claims
- 1083US4888521APhotoconductive device and method of operating the sameHITACHI LTD·Filed 1987·Granted Dec 19, 1989·26 cites·46 claims
- 1178US10513169B2Weather strip for automobileNISHIKAWA RUBBER CO LTD·Filed 2017·Granted Dec 24, 2019·3 cites·20 claims
- 1278US8225941B2Hollow fiber membrane for treating liquidsOGAWA HIROFUMI·Filed 2008·Granted Jul 24, 2012·9 cites·5 claims
- 1375US10081232B2Weatherstrip assembly for a vehicleNISHIKAWA RUBBER CO LTD·Filed 2015·Granted Sep 25, 2018·3 cites·7 claims
- 1475US9492794B2Porous hollow fiber membrane for treatment of protein-containing liquidYOKOTA HIDEYUKI·Filed 2011·Granted Nov 15, 2016·4 cites·10 claims
- 1575US8085081B2Semiconductor device for output of pulse waveformsOGAWA HIROFUMI·Filed 2010·Granted Dec 27, 2011·5 cites·14 claims
- 1674US11220166B2Sealing member of sliding doorNISHIKAWA RUBBER CO LTD·Filed 2020·Granted Jan 11, 2022·1 cites·6 claims
- 1772US9241083B2Apparatus, method, and computer readable medium for displaying gesture guidance informationFUJI XEROX CO LTD·Filed 2014·Granted Jan 19, 2016·2 cites·11 claims
- 1870US5233265APhotoconductive imaging apparatusHITACHI LTD·Filed 1990·Granted Aug 3, 1993·37 cites·19 claims
- 1970US4556817APhotoelectric conversion apparatusHITACHI LTD·Filed 1983·Granted Dec 3, 1985·13 cites·14 claims
- 2068US9795932B2Porous hollow fiber membrane and a porous hollow fiber membrane for the treatment of a protein-containing liquidYOKOTA HIDEYUKI·Filed 2009·Granted Oct 24, 2017·4 cites·11 claims
- 2167US8881915B2Polymeric porous hollow fiber membraneYOKOTA HIDEYUKI·Filed 2007·Granted Nov 11, 2014·4 cites·14 claims
- 2266US2024343844A1Polymer and production method thereforUNIV FUKUI·Filed 2022·Application pending·0 cites
- 2365US8434813B2Drainage structure of weather stripMORI KOUSUKE·Filed 2011·Granted May 7, 2013·3 cites·6 claims
- 2464US8479450B2Weather strip having a drainage structureMORI KOUSUKE·Filed 2011·Granted Jul 9, 2013·3 cites·9 claims
- 2563US5305559AMethod of grinding core blank for magnetic heads, using markers for determining grinding depth for nominal magnetic gap depthNGK INSULATORS LTD·Filed 1993·Granted Apr 26, 1994·14 cites·9 claims
- 2659US12269324B2Automobile weather stripNISHIKAWA RUBBER CO LTD·Filed 2023·Granted Apr 8, 2025·0 cites·5 claims
- 2759US2025291523A1Information processing system, user terminal, server, and non-transitory computer readable mediumFUJIFILM BUSINESS INNOVATION CORP·Filed 2024·Application pending·0 cites
- 2856US12205583B2Information processing apparatus and non-transitory computer readable medium storing programFUJIFILM BUSINESS INNOVATION CORP·Filed 2021·Granted Jan 21, 2025·0 cites·12 claims
- 2956US2024377993A1Job execution service system, non-transitory computer readable medium storing program, and job execution service methodFUJIFILM BUSINESS INNOVATION CORP·Filed 2023·Application pending·0 cites
- 3054US11546479B2Information processing apparatus and non-transitory computer readable medium storing information processing programFUJIFILM BUSINESS INNOVATION CORP·Filed 2020·Granted Jan 3, 2023·0 cites·19 claims
- 3154US10433420B2Circuit board device and printed wiring boardLAPIS SEMICONDUCTOR CO LTD·Filed 2019·Granted Oct 1, 2019·0 cites·18 claims
- 3252US8782955B2Sealing structure of weather strip for retractable roof vehiclesMORI KOUSUKE·Filed 2011·Granted Jul 22, 2014·1 cites·2 claims
- 3350US9239675B2Input display apparatus and method, image forming apparatus, imaging apparatus, and computer readable mediumOGAWA HIROFUMI·Filed 2012·Granted Jan 19, 2016·0 cites·16 claims
- 3449US11084363B2Sealing structureNISHIKAWA RUBBER CO LTD·Filed 2019·Granted Aug 10, 2021·0 cites·5 claims
- 3549US6070695ASilencerYUTAKA GIKEN CO LTD·Filed 1996·Granted Jun 6, 2000·19 cites·9 claims
- 3647US10375819B2Circuit board deviceLAPIS SEMICONDUCTOR CO LTD·Filed 2018·Granted Aug 6, 2019·0 cites·13 claims
- 3747US10334124B2Information processing apparatus, non-transitory computer readable medium, and information processing system for print job managementFUJI XEROX CO LTD·Filed 2017·Granted Jun 25, 2019·0 cites·14 claims
- 3847US2020301635A1Information processing system, image processing apparatus, and non-transitory computer readable mediumFUJI XEROX CO LTD·Filed 2019·Application pending·0 cites
- 3946US2015096630A1Electromagnetic valveTGK CO LTD·Filed 2014·Application pending·0 cites
- 4045US2005152287A1IP device, management server, and network systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Application pending·0 cites
- 4144US5335140ADrawer-type circuit interrupterTERASAKI DENKI SANGYO KK·Filed 1993·Granted Aug 2, 1994·11 cites·6 claims
- 4243US10365872B2Print instruction apparatus and non-transitory computer readable mediumFUJI XEROX CO LTD·Filed 2017·Granted Jul 30, 2019·0 cites·3 claims
- 4343US4609846AImage pick-up tube having collector and balance electrodesHITACHI LTD·Filed 1984·Granted Sep 2, 1986·4 cites·19 claims
- 4441US8408633B2Seal structure for retractable roof vehicleMORI KOUSUKE·Filed 2011·Granted Apr 2, 2013·0 cites·3 claims
- 4539US2006200644A1Storage medium for storing processing mode specifying information conversion program and processing mode specifying information conversion methodFUJI XEROX CO LTD·Filed 2005·Application pending·0 cites
- 4638US5625457AMethod and apparatus for non-contact measurement of relative displacementAGENCY IND SCIENCE TECHN·Filed 1995·Granted Apr 29, 1997·9 cites·2 claims
- 4737US2009180640A1Headphone amplifier circuitOKI SEMICONDUCTOR CO LTD·Filed 2008·Application pending·0 cites
- 4837US2006257183A1Image forming apparatusEHARA MASANAO·Filed 2006·Application pending·0 cites
- 4936US4636682AImage pickup tubeHITACHI LTD·Filed 1983·Granted Jan 13, 1987·2 cites·19 claims
- 5034US7199655B2Multistage amplifier circuit without interstage coupling capacitorOKI ELECTRIC IND CO LTD·Filed 2004·Granted Apr 3, 2007·0 cites·5 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →