Inventor · disambiguated record
Hiroyoshi Haga
Also filed as: HAGA HIROYOSHI
33 granted patents·217 citations·filing 1989–2017
96Inventor score
Top patents by PatentIndex Score
33 records- 0194US5991570AImage forming apparatus having a protection unit to protect a sensitive image forming element which is exposed when an open/close member is openRICOH KK·Filed 1998·Granted Nov 23, 1999·71 cites·19 claims
- 0293US8891996B2Power supply module and image forming apparatus including sameFUJITA JUNPEI·Filed 2012·Granted Nov 18, 2014·9 cites·16 claims
- 0391US8682231B2Image forming apparatusSENGOKU KENJI·Filed 2012·Granted Mar 25, 2014·6 cites·20 claims
- 0491US5483330AImage transfer unit of image formation apparatusRICOH KK·Filed 1992·Granted Jan 9, 1996·44 cites·5 claims
- 0590US9864307B2Image forming apparatus with a controller to set transfer biasSENGOKU KENJI·Filed 2016·Granted Jan 9, 2018·4 cites·22 claims
- 0688US8270856B2Apparatus including a re-transfer unit to re-transfer a recording medium and method of image formingMIZUTANI TAKEHIDE·Filed 2009·Granted Sep 18, 2012·14 cites·18 claims
- 0784US9395658B2Image forming apparatusWADA YUUJI·Filed 2015·Granted Jul 19, 2016·2 cites·19 claims
- 0883US9632461B2Image forming apparatus controlling transfer bias based on temperature and humiditySUGIURA KENJI·Filed 2015·Granted Apr 25, 2017·2 cites·31 claims
- 0983US9459564B2Image forming apparatusOHSUGI TATSUYA·Filed 2015·Granted Oct 4, 2016·2 cites·12 claims
- 1083US5029840AAutomatic sheet feeder for an image recording apparatusRICOH KK·Filed 1989·Granted Jul 9, 1991·27 cites·7 claims
- 1182US9835987B2Image forming apparatus and transfer bias controlSUGIURA KENJI·Filed 2016·Granted Dec 5, 2017·2 cites·13 claims
- 1282US9740156B2Image forming apparatus that adjusts a transfer bias according to surface properties of a transfer targetWADA YUUJI·Filed 2016·Granted Aug 22, 2017·2 cites·18 claims
- 1381US9817341B2Image forming apparatusOHSUGI TATSUYA·Filed 2016·Granted Nov 14, 2017·2 cites·20 claims
- 1481US9645530B2Image forming apparatusKOCHI NAOTO·Filed 2016·Granted May 9, 2017·2 cites·10 claims
- 1581US7277657B2Cleaning device and image forming apparatus including the cleaning device that controls occurrences of background fouling and abnormal imageRICOH KK·Filed 2004·Granted Oct 2, 2007·22 cites·25 claims
- 1679US8805223B2Image forming apparatus, image forming system, and transfer methodTAKEUCHI TOMOKAZU·Filed 2012·Granted Aug 12, 2014·2 cites·8 claims
- 1773US9519257B2Cleaning device and image forming apparatus incorporating sameSENGOKU KENJI·Filed 2016·Granted Dec 13, 2016·1 cites·11 claims
- 1869US8929786B2Image forming apparatus, system, and method using a superimposed voltage signal and a direct voltage signalTAKEUCHI TOMOKAZU·Filed 2012·Granted Jan 6, 2015·1 cites·15 claims
- 1969US8824941B2Image transfer device and image forming apparatus incorporating sameSHIMIZU YASUNOBU·Filed 2012·Granted Sep 2, 2014·1 cites·21 claims
- 2068US8977153B2Image forming apparatus which uses an AC voltage and/or a DC voltage at a transfer nip depending on a surface roughness of a recording sheetOGIYAMA HIROMI·Filed 2012·Granted Mar 10, 2015·1 cites·8 claims
- 2162US9075383B2Image forming apparatusRICOH CO LTD·Filed 2014·Granted Jul 7, 2015·0 cites·27 claims
- 2262US9037022B2Image forming apparatus, image forming system, and transfer methodRICOH CO LTD·Filed 2014·Granted May 19, 2015·0 cites·18 claims
- 2359US9720355B2Image forming apparatusOHSUGI TATSUYA·Filed 2016·Granted Aug 1, 2017·0 cites·20 claims
- 2458US9811036B2Belt device and image forming apparatus including sameFUJITA JUNPEI·Filed 2016·Granted Nov 7, 2017·0 cites·11 claims
- 2557US9811046B2Image forming apparatusWADA YUUJI·Filed 2016·Granted Nov 7, 2017·0 cites·20 claims
- 2656US9323170B2Image forming apparatus with a controller to set transfer biasSENGOKU KENJI·Filed 2012·Granted Apr 26, 2016·0 cites·28 claims
- 2751US9031436B2Image forming apparatusSHIMIZU YASUNOBU·Filed 2012·Granted May 12, 2015·0 cites·25 claims
- 2851US8948644B2Power supply module and image forming apparatus including sameFUJITA JUNPEI·Filed 2012·Granted Feb 3, 2015·0 cites·18 claims
- 2949US11054762B2Powder container, process cartridge, and image forming apparatusTAKANO KUNIYORI·Filed 2017·Granted Jul 6, 2021·0 cites·28 claims
- 3049US9696662B2Cleaning device and image forming apparatus incorporating sameYOGOSAWA KAZUKI·Filed 2016·Granted Jul 4, 2017·0 cites·21 claims
- 3146US9057991B2Image forming apparatusSHIMIZU YASUNOBU·Filed 2012·Granted Jun 16, 2015·0 cites·30 claims
- 3244US9766575B2Image forming apparatusOHSUGI TATSUYA·Filed 2016·Granted Sep 19, 2017·0 cites·20 claims
- 3340US9152070B2Transfer device and image forming apparatusOGIYAMA HIROMI·Filed 2012·Granted Oct 6, 2015·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →