Inventor · disambiguated record
Yoshie Iwakura
Also filed as: IWAKURA YOSHIE
46 granted patents·1 pending application·294 citations·filing 1993–2013
98Inventor score
Top patents by PatentIndex Score
47 records- 0193US7428400B2Primary transfer unit of image forming apparatusRICOH KK·Filed 2006·Granted Sep 23, 2008·16 cites·2 claims
- 0290US7587159B2Image forming method and apparatus including a relationship between secondary roller diameter and recording medium ingress positionRICOH KK·Filed 2007·Granted Sep 8, 2009·11 cites·20 claims
- 0390US7164877B2Image forming apparatusSHARP KK·Filed 2005·Granted Jan 16, 2007·12 cites·3 claims
- 0486US7254359B2Transfer apparatus and image forming apparatusSHARP KK·Filed 2005·Granted Aug 7, 2007·8 cites·20 claims
- 0585US6134415ARoller/belt type multiple color image transfer apparatus including decreasing contact region widths between successive image support/transfer roller pairs and common power Supply for transfer means and charger meansSHARP KK·Filed 1998·Granted Oct 17, 2000·36 cites·6 claims
- 0684US7734235B2Image forming apparatus including a metallic driving rollerRICOH KK·Filed 2006·Granted Jun 8, 2010·7 cites·11 claims
- 0782US8472817B2Image forming apparatusKONISHI RUMI·Filed 2010·Granted Jun 25, 2013·5 cites·22 claims
- 0882US7218874B2Image forming apparatus and method for controlling fixing mechanism portionSHARP KK·Filed 2005·Granted May 15, 2007·7 cites·12 claims
- 0981US7215914B2Transfer deviceSHARP KK·Filed 2004·Granted May 8, 2007·16 cites·8 claims
- 1080US5799225AImage forming apparatus having variable transfer and attraction voltageSHARP KK·Filed 1995·Granted Aug 25, 1998·19 cites·9 claims
- 1178US7636539B2Tandem intermediate-transfer type image forming apparatusRICOH KK·Filed 2006·Granted Dec 22, 2009·5 cites·13 claims
- 1277US7369800B2Device for preventing contact between transfer body and transfer medium tail edge portion in image forming apparatusSHARP KK·Filed 2005·Granted May 6, 2008·5 cites·16 claims
- 1376US7415218B2Image forming apparatus having charging unit with separate intake and exhaust ductsSHARP KK·Filed 2005·Granted Aug 19, 2008·5 cites·10 claims
- 1476US7062209B2Transfer device with coaxial rotating camsSHARP KK·Filed 2005·Granted Jun 13, 2006·5 cites·7 claims
- 1574US7330686B2Color image forming apparatus including a voltage attenuating intermediate transfer beltSHARP KK·Filed 2005·Granted Feb 12, 2008·4 cites·14 claims
- 1670US7159862B2Sheet delivery mechanism for image forming apparatusSHARP KK·Filed 2004·Granted Jan 9, 2007·10 cites·11 claims
- 1766US8983323B2Color image forming apparatus with a line velocity difference set between image carriersYAMASHITA TAKESHI·Filed 2013·Granted Mar 17, 2015·1 cites·10 claims
- 1864US5745820AImage forming apparatus with a potential generating deviceSHARP KK·Filed 1996·Granted Apr 28, 1998·16 cites·40 claims
- 1963US7245865B2Transfer apparatus and image forming apparatusSHARP KK·Filed 2005·Granted Jul 17, 2007·2 cites·12 claims
- 2062US7418234B2Image forming apparatusSHARP KK·Filed 2004·Granted Aug 26, 2008·8 cites·14 claims
- 2161US7280788B2Image forming apparatus and transferring methodSHARP KK·Filed 2005·Granted Oct 9, 2007·2 cites·2 claims
- 2261US6233422B1Image forming apparatus having transfer drum with transfer paper charging memberSHARP KK·Filed 1999·Granted May 15, 2001·8 cites·27 claims
- 2357US7251450B2Paper separator and processor cartridgeSHARP KK·Filed 2003·Granted Jul 31, 2007·6 cites·21 claims
- 2456US7379694B2Belt transfer apparatus and image forming deviceSHARP KK·Filed 2004·Granted May 27, 2008·6 cites·8 claims
- 2556US5697034AImage forming apparatus which stably holds a uniform surface potential of a transfer deviceSHARP KK·Filed 1996·Granted Dec 9, 1997·12 cites·30 claims
- 2653US7058336B2Access-controlling mechanism and image forming apparatusSHARP KK·Filed 2004·Granted Jun 6, 2006·5 cites·20 claims
- 2751US5477308AImage forming apparatus having an image-quality correction functionSHARP KK·Filed 1993·Granted Dec 19, 1995·10 cites·37 claims
- 2850US7130570B2Transfer deviceSHARP KK·Filed 2004·Granted Oct 31, 2006·4 cites·3 claims
- 2950US6026256AImage forming apparatusSHARP KK·Filed 1998·Granted Feb 15, 2000·5 cites·12 claims
- 3049US5771430AImage forming apparatus with toner transferSHARP KK·Filed 1997·Granted Jun 23, 1998·9 cites·19 claims
- 3148US2007172263A1Transfer deviceSHARP KK·Filed 2007·Application pending·0 cites
- 3247US9025994B2Image forming apparatusYAMASHITA TAKESHI·Filed 2013·Granted May 5, 2015·0 cites·9 claims
- 3346US6259869B1Image forming apparatusSHARP KK·Filed 1998·Granted Jul 10, 2001·4 cites·9 claims
- 3445US7305207B2Cleaning systemSHARP KK·Filed 2005·Granted Dec 4, 2007·0 cites·9 claims
- 3543US7158750B2Paper transport apparatus and paper transport methodSHARP KK·Filed 2003·Granted Jan 2, 2007·2 cites·24 claims
- 3643US5758244ATransfer device for an image forming apparatusSHARP KK·Filed 1997·Granted May 26, 1998·6 cites·25 claims
- 3741US7398041B2Color image forming apparatus using base-layerSHARP KK·Filed 2005·Granted Jul 8, 2008·0 cites·7 claims
- 3841US7236713B2Image forming device including secondary transfer counter roller switchable between ground and electrically floating states to facilitate removal of recording medium from intermediate transfer memberSHARP KK·Filed 2005·Granted Jun 26, 2007·0 cites·11 claims
- 3940US5909611AImage forming apparatusSHARP KK·Filed 1998·Granted Jun 1, 1999·5 cites·29 claims
- 4039US6078772AImage-forming apparatusSHARP KK·Filed 1997·Granted Jun 20, 2000·5 cites·18 claims
- 4138US6081686AImage forming apparatus having transfer drum with specific constructionSHARP KK·Filed 1999·Granted Jun 27, 2000·2 cites·9 claims
- 4237US7221883B2Electrostatic image transfer device using intermediate transfer belt having simplified image transfer voltage requirementsSHARP KK·Filed 2004·Granted May 22, 2007·0 cites·6 claims
- 4337US6097923AImage forming method and apparatusSHARP KK·Filed 1998·Granted Aug 1, 2000·4 cites·2 claims
- 4435US6954605B2Transfer device having casing with elastic memberSHARP KK·Filed 2003·Granted Oct 11, 2005·0 cites·6 claims
- 4534US6169862B1Image forming apparatus with nip time changing deviceSHARP KK·Filed 1999·Granted Jan 2, 2001·1 cites·21 claims
- 4632US7796919B2Image forming apparatus capable of preventing worsening of image quality caused by excessively charged developerSHARP KK·Filed 2004·Granted Sep 14, 2010·0 cites·16 claims
- 4730US6118954AImage forming apparatus having transfer roller with charge-removing and cleaning devicesSHARP KK·Filed 1998·Granted Sep 12, 2000·0 cites·44 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →