Inventor · disambiguated record
Tsutomu Nishiuwatoko
Also filed as: NISHIUWATOKO TSUTOMU
55 granted patents·4 pending applications·1,556 citations·filing 1995–2018
99Inventor score
Top patents by PatentIndex Score
59 records- 0199US5966566ARecycle method for process cartridge and image forming apparatusCANON KK·Filed 1997·Granted Oct 12, 1999·235 cites·33 claims
- 0298US5893006AProcess cartridge detectably mountable to image forming apparatus and image forming apparatus using sameCANON KK·Filed 1996·Granted Apr 6, 1999·125 cites·22 claims
- 0398US5768658AElectrode member, developing apparatus, process cartridge and image forming apparatusCANON KK·Filed 1996·Granted Jun 16, 1998·195 cites·36 claims
- 0497US6070029ACoupling member, process cartridge, electrophotographic image forming apparatus and assembling methodCANON KK·Filed 1996·Granted May 30, 2000·110 cites·29 claims
- 0597US5937240AProcess cartridge having positioning members and image forming apparatus using such a process cartridgeCANON KK·Filed 1997·Granted Aug 10, 1999·108 cites·95 claims
- 0697US5870655AProcess cartridge having a particular arrangement of electrical contacts and electrophotographic image forming apparatus using such a process cartridgeCANON KK·Filed 1996·Granted Feb 9, 1999·107 cites·21 claims
- 0797US5815644ADeveloping frame, process cartridge and image forming apparatusCANON KK·Filed 1997·Granted Sep 29, 1998·101 cites·121 claims
- 0896US8509650B2Electrophotographic image forming apparatusKIKUCHI KEN·Filed 2010·Granted Aug 13, 2013·15 cites·2 claims
- 0996US8463156B2Image forming apparatus with movable cartridge supporting memberAKUTSU TAKASHI·Filed 2010·Granted Jun 11, 2013·18 cites·16 claims
- 1096US8185013B2Electrophotographic image forming apparatus including a regulating member for limiting cartridge movementKIKUCHI KEN·Filed 2010·Granted May 22, 2012·13 cites·10 claims
- 1196US7817936B2Color electrophotographic image forming apparatusCANON KK·Filed 2009·Granted Oct 19, 2010·25 cites·12 claims
- 1296US5729796AShutter having first and second shutter members, process cartridge and image forming apparatus having the shutterCANON KK·Filed 1997·Granted Mar 17, 1998·88 cites·50 claims
- 1395US8768208B2Image forming apparatus with cartridge supporting member and preventing members for ensuring mounting of cartridges in associated mounting portionsCANON KK·Filed 2013·Granted Jul 1, 2014·9 cites·4 claims
- 1495US8626025B2Electrophotographic image forming apparatusCANON KK·Filed 2012·Granted Jan 7, 2014·9 cites·19 claims
- 1595US8626008B2Electrophotographic image forming apparatus with removed developer accommodating container for receiving developer cleaned from an image bearing memberCANON KK·Filed 2013·Granted Jan 7, 2014·9 cites·4 claims
- 1695US8483594B2Image forming apparatus with cartridge supporting member and members for preventing movement of cartridge supporting memberAKUTSU TAKASHI·Filed 2012·Granted Jul 9, 2013·10 cites·4 claims
- 1794US8571440B2Image forming apparatus with cartridge supporting member and preventing member for preventing movement of cartridge supporting memberAKUTSU TAKASHI·Filed 2012·Granted Oct 29, 2013·9 cites·12 claims
- 1894US8565638B2Unit and electrophotographic image forming apparatusKIKUCHI KEN·Filed 2010·Granted Oct 22, 2013·9 cites·15 claims
- 1994US8396380B2Electrophotographic image forming apparatus with removed-developer accommodating chamber for receiving developer cleaned from electrophotographic photosensitive drumsKIKUCHI KEN·Filed 2010·Granted Mar 12, 2013·9 cites·10 claims
- 2094US6901229B2Driving-force transmitting part, electrophotographic photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2001·Granted May 31, 2005·34 cites·29 claims
- 2193US8737872B2Image forming apparatus having a door path regulating memberCANON KK·Filed 2013·Granted May 27, 2014·6 cites·12 claims
- 2292US8526848B2Electrophotographic image forming apparatusNISHIUWATOKO TSUTOMU·Filed 2010·Granted Sep 3, 2013·9 cites·22 claims
- 2392US8412070B2Electrophotographic image forming apparatus including a cartridge mounting featureKIKUCHI KEN·Filed 2010·Granted Apr 2, 2013·6 cites·5 claims
- 2491US6141508ADeveloping apparatus and process cartridgeCANON KK·Filed 1999·Granted Oct 31, 2000·51 cites·25 claims
- 2591US5585902AToner cartridge, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1995·Granted Dec 17, 1996·53 cites·27 claims
- 2690US8855531B2Image forming apparatus with removable cartridge supporting memberSUZUKI KENSUKE·Filed 2012·Granted Oct 7, 2014·6 cites·20 claims
- 2789US9046871B2Process cartridge, main cartridge, sub cartridge, and image forming apparatusCANON KK·Filed 2012·Granted Jun 2, 2015·5 cites·20 claims
- 2889US8467701B2Color electrophotographic image forming apparatusKIKUCHI KEN·Filed 2010·Granted Jun 18, 2013·5 cites·16 claims
- 2989US6137973ACleaning apparatus and process cartridge having such cleaning apparatusCANON KK·Filed 1998·Granted Oct 24, 2000·46 cites·24 claims
- 3087US8320794B2Electrophotographic image forming apparatusKIKUCHI KEN·Filed 2010·Granted Nov 27, 2012·4 cites·15 claims
- 3185US8682212B2Electrophotographic image forming apparatusKIKUCHI KEN·Filed 2010·Granted Mar 25, 2014·4 cites·7 claims
- 3283US8355648B2CartridgeCANON KK·Filed 2010·Granted Jan 15, 2013·4 cites·6 claims
- 3381US9429900B2Cartridge supporting member having different moving direction guide portionsCANON KK·Filed 2014·Granted Aug 30, 2016·2 cites·19 claims
- 3481US8406657B2Color electrophotographic image forming apparatusKIKUCHI KEN·Filed 2010·Granted Mar 26, 2013·3 cites·12 claims
- 3579US8666278B2Image forming apparatus having a door path regulating memberHIRAMATSU DAISUKE·Filed 2012·Granted Mar 4, 2014·2 cites·22 claims
- 3678US6137971AEnd member and process cartridgeCANON KK·Filed 1999·Granted Oct 24, 2000·27 cites·23 claims
- 3777US9606501B2Image forming apparatus and drawer memberCANON KK·Filed 2016·Granted Mar 28, 2017·1 cites·19 claims
- 3873US9037039B2Electrophotographic image forming apparatusCANON KK·Filed 2013·Granted May 19, 2015·1 cites·13 claims
- 3973US8983334B2Image forming apparatus having a path regulating memberCANON KK·Filed 2014·Granted Mar 17, 2015·1 cites·12 claims
- 4072US9014596B2Electrophotographic image forming apparatusKIKUCHI KEN·Filed 2012·Granted Apr 21, 2015·1 cites·12 claims
- 4172US8639158B2Electrophotographic image forming apparatusKIKUCHI KEN·Filed 2012·Granted Jan 28, 2014·1 cites·4 claims
- 4271US6141513AToner cartridge, process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Oct 31, 2000·41 cites·42 claims
- 4368US10289058B2Image forming apparatus and drawer memberCANON KK·Filed 2018·Granted May 14, 2019·0 cites·17 claims
- 4467US8254809B2Electrophotographic image forming apparatusNISHIUWATOKO TSUTOMU·Filed 2010·Granted Aug 28, 2012·1 cites·14 claims
- 4566US8335453B2Electrophotographic image forming apparatusNISHIUWATOKO TSUTOMU·Filed 2010·Granted Dec 18, 2012·1 cites·11 claims
- 4665US6144819AApparatus for applying voltage to charging member and charging apparatusCANON KK·Filed 1998·Granted Nov 7, 2000·16 cites·27 claims
- 4764US10061260B2Image forming apparatus and drawer memberCANON KK·Filed 2017·Granted Aug 28, 2018·0 cites·31 claims
- 4862US6240268B1Gap retaining member and developing device employing the sameCANON KK·Filed 1999·Granted May 29, 2001·14 cites·15 claims
- 4960US6522854B2Developing apparatus preventing rotation between magnet and bearingCANON KK·Filed 2000·Granted Feb 18, 2003·7 cites·4 claims
- 5060US2014363198A1Image forming apparatusCANON KK·Filed 2014·Application pending·0 cites
Showing the top 50 of 59 patent records by PatentIndex Score.
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