Inventor · disambiguated record
Hisayoshi Kojima
Also filed as: KOJIMA HISAYOSHI
43 granted patents·2,729 citations·filing 1991–2021
99Inventor score
Top patents by PatentIndex Score
43 records- 0199US6608980B2Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge comprising cartridge drum positioning portion or recessCANON KK·Filed 2000·Granted Aug 19, 2003·249 cites·26 claims
- 0299US6577831B1Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge having a supporting member for rotatably supporting a developing roller at a position away from the center of rotation thereofCANON KK·Filed 2000·Granted Jun 10, 2003·178 cites·16 claims
- 0399US6463233B2Process cartridge having first and second cartridge guiding portions and an electrophotographic image forming apparatus to which the process cartridge is attachedCANON KK·Filed 2001·Granted Oct 8, 2002·133 cites·16 claims
- 0499US6072969ADeveloping cartridgeCANON KK·Filed 1997·Granted Jun 6, 2000·217 cites·62 claims
- 0598US6442359B1Process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus comprising means for rotating a charging unit if first and second rotational directions and the apparatus mounting such a process cartridgeCANON KK·Filed 1999·Granted Aug 27, 2002·126 cites·16 claims
- 0698US6289189B1Process cartridge and electrophotographic image forming apparatus having a main assembly in which a cartridge coupling member is engageable with a main assembly coupling member to receive a driving forceCANON KK·Filed 1999·Granted Sep 11, 2001·143 cites·9 claims
- 0798US6157792AElectrophotographic apparatus having plural image forming modes, and a process cartridge applied to such electrophotographic apparatusCANON KK·Filed 1999·Granted Dec 5, 2000·122 cites·50 claims
- 0897US6564029B2Cartridge having developer supply opening and image forming apparatus usable therewithCANON KK·Filed 2001·Granted May 13, 2003·85 cites·14 claims
- 0997US6345164B1Shutter pin and developing cartridgeCANON KK·Filed 1999·Granted Feb 5, 2002·103 cites·55 claims
- 1097US5963759AProcess cartridge and image forming apparatus to which process cartridge can detachably be mountedCANON KK·Filed 1997·Granted Oct 5, 1999·97 cites·17 claims
- 1197US5950049ADeveloping cartridgeCANON KK·Filed 1997·Granted Sep 7, 1999·111 cites·94 claims
- 1297US5940657ADeveloping cartridgeCANON KK·Filed 1997·Granted Aug 17, 1999·107 cites·30 claims
- 1396US6587660B2Developing apparatusCANON KK·Filed 2001·Granted Jul 1, 2003·62 cites·8 claims
- 1496US6404996B1Electrophotographic apparatus having plural image forming modes, and a process cartridge applied to such electrophotographic apparatusCANON KK·Filed 2000·Granted Jun 11, 2002·66 cites·20 claims
- 1595US6266503B1Method for attaching electrostatic photosensitive drum method for replacing electrophotographic photosensitive drum and process cartridgeCANON KK·Filed 1999·Granted Jul 24, 2001·82 cites·16 claims
- 1695US5521693AImage forming apparatus and process cartridge detachably mountable to sameCANON KK·Filed 1995·Granted May 28, 1996·109 cites·32 claims
- 1795US5235383AProcess cartridge and image forming apparatus using sameCANON KK·Filed 1991·Granted Aug 10, 1993·72 cites·11 claims
- 1894US6463242B1Developing device, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2000·Granted Oct 8, 2002·49 cites·19 claims
- 1993US6131011AMethod of adjusting the mounting of cleaning member, process cartridge and image forming apparatusCANON KK·Filed 1999·Granted Oct 10, 2000·62 cites·6 claims
- 2093US5701558ADeveloping apparatus for preventing developer from leaking from a developer containerCANON KK·Filed 1994·Granted Dec 23, 1997·49 cites·9 claims
- 2191US5414493AImage forming apparatusCANON KK·Filed 1994·Granted May 9, 1995·39 cites·13 claims
- 2290USD519150SImage forming apparatusCANON KK·Filed 2004·Granted Apr 18, 2006·41 cites·1 claims
- 2389US10747144B2Toner cartridge and toner supplying mechanismCANON KK·Filed 2019·Granted Aug 18, 2020·2 cites·20 claims
- 2489US6314266B1Cleaning apparatus equipped with brush roller, process cartridge, and image forming apparatusCANON KK·Filed 1999·Granted Nov 6, 2001·46 cites·13 claims
- 2589US5442421AProcess cartridge and image forming apparatus using the sameCANON KK·Filed 1993·Granted Aug 15, 1995·37 cites·45 claims
- 2689US5250994AImage forming apparatus having transfer member supporting memberCANON KK·Filed 1992·Granted Oct 5, 1993·37 cites·13 claims
- 2789US5249026AImage forming system and process cartridge mountable on sameCANON KK·Filed 1992·Granted Sep 28, 1993·38 cites·32 claims
- 2888US7003233B2Image forming apparatus with a toner replenishing control feature based on stored toner density and fluidity information, related method, and developing agent replenishing container for sameCANON KK·Filed 2003·Granted Feb 21, 2006·30 cites·36 claims
- 2988US6389250B1Developing device, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2000·Granted May 14, 2002·31 cites·15 claims
- 3088US6178301B1Cleaning apparatus for cleaning an image carrier, process cartridge having a cleaning apparatus for removing remaining developer on an image carrier, and image forming apparatus having a cleaning member for removing remaining developer on an image carrierCANON KK·Filed 1999·Granted Jan 23, 2001·43 cites·6 claims
- 3188US5528343ADriving cartridge for an image forming apparatusCANON KK·Filed 1995·Granted Jun 18, 1996·48 cites·8 claims
- 3286US11366409B2Toner cartridge and toner supplying mechanismCANON KK·Filed 2021·Granted Jun 21, 2022·1 cites·30 claims
- 3386US5471284AImage forming apparatus having toner depletion detection featureCANON KK·Filed 1994·Granted Nov 28, 1995·28 cites·17 claims
- 3485US5497220ADeveloping cartridge having support member for rotatably supporting developing device, and developing apparatusCANON KK·Filed 1994·Granted Mar 5, 1996·29 cites·9 claims
- 3584US11360408B2Toner cartridge and toner supplying mechanismCANON KK·Filed 2020·Granted Jun 14, 2022·1 cites·49 claims
- 3683US10613453B2Toner cartridge and toner supplying mechanismCANON KK·Filed 2019·Granted Apr 7, 2020·1 cites·16 claims
- 3782US11506993B2Toner cartridge and toner supplying mechanismCANON KK·Filed 2020·Granted Nov 22, 2022·1 cites·20 claims
- 3882US10884356B2Toner cartridge and toner supplying mechanismCANON KK·Filed 2020·Granted Jan 5, 2021·1 cites·15 claims
- 3977US6839534B2Image forming apparatus and developer supply container removably mountable in image forming apparatusCANON KK·Filed 2001·Granted Jan 4, 2005·16 cites·10 claims
- 4072US5428426AImage forming systemCANON KK·Filed 1994·Granted Jun 27, 1995·19 cites·12 claims
- 4159US7011829B2Tissue fillerKANEMARU SHIN-ICHI·Filed 2001·Granted Mar 14, 2006·3 cites·3 claims
- 4253US7378088B2Base material for regenerating an air sinus and regeneration method thereofKANEMARU SHIN-ICHI·Filed 2004·Granted May 27, 2008·7 cites·8 claims
- 4349US6285851B1Cleaning apparatus which includes cleaning member, supporting portion and reinforcing memberCANON KK·Filed 1999·Granted Sep 4, 2001·8 cites·29 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →