Inventor · disambiguated record
Yasuyuki Ishii
Also filed as: ISHII YASUYUKI
71 granted patents·25 pending applications·379 citations·filing 1994–2021
98Inventor score
Top patents by PatentIndex Score
96 records- 0193US5835818AService life informing device for charged member, informing method thereof, process cartridge and image forming apparatusCANON KK·Filed 1996·Granted Nov 10, 1998·65 cites·85 claims
- 0286US7734233B2Development device, process cartridge, and image forming apparatusRICOH KK·Filed 2007·Granted Jun 8, 2010·8 cites·16 claims
- 0383US6144820ADeveloping apparatus with a sealing member having an insulating layer and a conductive portionCANON KK·Filed 1999·Granted Nov 7, 2000·32 cites·22 claims
- 0482US6229979B1Developing charging member supplied with a voltage of a same polarity as that of a developer and not less than a charge starting voltage and a developing charging roller with internal bearingCANON KK·Filed 1998·Granted May 8, 2001·31 cites·34 claims
- 0580US11454898B2Gap adjustment of non-contact charging rollerHEWLETT PACKARD DEVELOPMENT CO·Filed 2020·Granted Sep 27, 2022·1 cites·20 claims
- 0679US10908554B2Image forming apparatus with lubricant applicatorHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Feb 2, 2021·1 cites·15 claims
- 0779US7822351B2Filling-rate lowering and rolling rate adjusting image forming apparatusRICOH KK·Filed 2008·Granted Oct 26, 2010·5 cites·20 claims
- 0878US11402790B2Imaging systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Aug 2, 2022·1 cites·15 claims
- 0978US7783235B2Hopping toner development apparatus and image formation apparatusRICOH KK·Filed 2007·Granted Aug 24, 2010·5 cites·9 claims
- 1077US6314257B1Simultaneous developing/cleaning deviceCANON KK·Filed 2000·Granted Nov 6, 2001·17 cites·6 claims
- 1176US6574444B2Developing apparatus wherein seal-inflicted damage to an end edge of a developing roller is preventedCANON KK·Filed 2001·Granted Jun 3, 2003·15 cites·8 claims
- 1273US9158228B2Development device and image forming apparatus incorporating sameOGAWA YOSHIKO·Filed 2012·Granted Oct 13, 2015·2 cites·15 claims
- 1373US6577823B2Method of detecting life of image bearing member, image forming apparatus and cartridgeCANON KK·Filed 2002·Granted Jun 10, 2003·9 cites·48 claims
- 1472US6704524B2Method of detecting life of image bearing member, image forming apparatus and cartridgeCANON KK·Filed 2002·Granted Mar 9, 2004·9 cites·53 claims
- 1571US8374531B2Developer bearing member and developing device with outer electrode including separated portions, and inner electrode for creating electric fieldRICOH CO LTD·Filed 2009·Granted Feb 12, 2013·3 cites·20 claims
- 1670US8005409B2Development deviceRICOH CO LTD·Filed 2009·Granted Aug 23, 2011·3 cites·6 claims
- 1769US8920774B2Drug having regulatory cell ligand contained in liposomeISHII YASUYUKI·Filed 2010·Granted Dec 30, 2014·2 cites·8 claims
- 1869US7907856B2Development apparatus and image forming apparatus using toner carrier with a plurality of electrodesRICOH CO LTD·Filed 2006·Granted Mar 15, 2011·3 cites·20 claims
- 1968US6594462B2Developing apparatus using toner with conductive particlesCANON KK·Filed 2001·Granted Jul 15, 2003·10 cites·19 claims
- 2067US6643484B2Image forming apparatus including image bearing member rotatable at different peripheral velocitiesCANON KK·Filed 2002·Granted Nov 4, 2003·10 cites·30 claims
- 2166US8965254B2Development device, and image forming apparatus and process cartridge incorporating sameOGAWA YOSHIKO·Filed 2012·Granted Feb 24, 2015·1 cites·13 claims
- 2266US8824935B2Development device, process cartridge incorporating same, and image forming apparatus incorporating sameSEKI HIDEYASU·Filed 2011·Granted Sep 2, 2014·1 cites·19 claims
- 2366US6952551B2Developer carrying member and developing apparatusCANON KK·Filed 2003·Granted Oct 4, 2005·9 cites·20 claims
- 2466US6522842B1Developing apparatus and image forming apparatusCANON KK·Filed 2000·Granted Feb 18, 2003·10 cites·39 claims
- 2564US11221576B2Imaging deviceHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Jan 11, 2022·0 cites·15 claims
- 2663US11150594B2Image forming apparatus having a protective agent coaterHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Oct 19, 2021·0 cites·15 claims
- 2763US8391755B2Developing device, process cartridge, and image forming apparatusNAKAGAWA YOSHINORI·Filed 2008·Granted Mar 5, 2013·2 cites·18 claims
- 2863US8355657B2Development unit, for image forming apparatusRICOH CO LTD·Filed 2008·Granted Jan 15, 2013·2 cites·16 claims
- 2963US6529699B2Image forming apparatus and process cartridge detachably attachable to image forming apparatus comprising an image bearing body, and a developer carrying bodyCANON KK·Filed 2001·Granted Mar 4, 2003·8 cites·9 claims
- 3062US11618039B2Separation device and separation methodFUJIFILM CORP·Filed 2020·Granted Apr 4, 2023·0 cites·11 claims
- 3162US9821035B2Preparation for preventing or treating type I diabetesREGIMMUNE CORP·Filed 2013·Granted Nov 21, 2017·1 cites·8 claims
- 3262US8165510B2Development device and image forming apparatus having electrodes that cause toner particles to form a toner cloud on the surface of the toner carrierKADOTA ICHIRO·Filed 2008·Granted Apr 24, 2012·2 cites·9 claims
- 3362US7664442B2Developing apparatusCANON KK·Filed 2007·Granted Feb 16, 2010·2 cites·11 claims
- 3462US6308038B1Developing apparatusCANON KK·Filed 2000·Granted Oct 23, 2001·8 cites·12 claims
- 3561US9387170B2Drug having regulatory cell ligand contained in liposomeRIKEN·Filed 2014·Granted Jul 12, 2016·0 cites·6 claims
- 3661US8073350B2Developing apparatus, image forming apparatus, and process cartridgeISHII YASUYUKI·Filed 2008·Granted Dec 6, 2011·2 cites·20 claims
- 3761US6961527B2Method of detecting life of image bearing member, image forming apparatus and cartridgeCANON KK·Filed 2003·Granted Nov 1, 2005·5 cites·12 claims
- 3861US5799233ACharging apparatus and image forming apparatusCANON KK·Filed 1996·Granted Aug 25, 1998·14 cites·12 claims
- 3960US11448332B2Chip, mixing device, and mixing methodFUJIFILM CORP·Filed 2020·Granted Sep 20, 2022·0 cites·17 claims
- 4060US2023407109A1Thermoexpandable refractory material composition, thermoexpandable refractory material, and method for producing thermoexpandable refractory materialSEKISUI CHEMICAL CO LTD·Filed 2021·Application pending·0 cites
- 4159US6647230B2Image-forming apparatus for use with negatively-charged toner and featuring a negatively-chargeable image-bearing member, and process cartridge using sameCANON KK·Filed 2001·Granted Nov 11, 2003·7 cites·79 claims
- 4259US5660489ASheet-supplying roller recording deviceCANON KK·Filed 1996·Granted Aug 26, 1997·19 cites·9 claims
- 4358US7286791B2Developing apparatusCANON KK·Filed 2005·Granted Oct 23, 2007·1 cites·12 claims
- 4458US5591294ARecording sheet manufacturing and storing method, recording sheet obtained by the method, and ink jet recording method using the recording sheetCANON KK·Filed 1994·Granted Jan 7, 1997·8 cites·14 claims
- 4557US7702265B2Developing unit and image forming apparatusRICOH KK·Filed 2007·Granted Apr 20, 2010·1 cites·16 claims
- 4657US7123849B2Image forming apparatus, image forming apparatus control method, cartridge, and storage mediumCANON KK·Filed 2004·Granted Oct 17, 2006·6 cites·19 claims
- 4756US11366420B2Lubricant applicator to counteract bristle-bendingHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Jun 21, 2022·0 cites·13 claims
- 4855US8716031B2Method for quantification of antigen-specific canine IgEMASUDA KENICHI·Filed 2009·Granted May 6, 2014·1 cites·7 claims
- 4954US11886135B2Constant lubricant applicationHEWLETT PACKARD DEVELOPMENT CO·Filed 2021·Granted Jan 30, 2024·0 cites·14 claims
- 5054US6983120B2Cleaning blade, cleaning device, process cartridge, and image forming apparatus using themCANON KK·Filed 2004·Granted Jan 3, 2006·5 cites·23 claims
Showing the top 50 of 96 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →