Inventor · disambiguated record
Katsunori Yokoyama
Also filed as: YOKOYAMA KATSUNORI
38 granted patents·1 pending application·1,930 citations·filing 1981–2016
98Inventor score
Top patents by PatentIndex Score
39 records- 0199US6330409B1Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2000·Granted Dec 11, 2001·107 cites·10 claims
- 0298US6169866B1Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Jan 2, 2001·120 cites·54 claims
- 0398US6029032AProcess cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Feb 22, 2000·169 cites·81 claims
- 0498US6006058AProcess cartridge and electrophotographic image forming apparatus having an improved driving systemCANON KK·Filed 1997·Granted Dec 21, 1999·154 cites·61 claims
- 0598US5937239AProcess cartridge and electrophotographic image forming apparatusCANON KK·Filed 1996·Granted Aug 10, 1999·137 cites·37 claims
- 0697US6246849B1Bearing, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Jun 12, 2001·119 cites·61 claims
- 0797US6016413AAssembling method of process cartridge, assembling method and process cartridgeCANON KK·Filed 1997·Granted Jan 18, 2000·114 cites·16 claims
- 0897US5966568AProcess cartridge, assembling method of process cartridge, assembling method of toner container and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Oct 12, 1999·115 cites·44 claims
- 0996US6118960AEnd cover, process cartridge and assembling method for process cartridgeCANON KK·Filed 1998·Granted Sep 12, 2000·84 cites·24 claims
- 1096US6101354AElectrophotographic image forming apparatus to which a process cartridge is detachably mountable and such a process cartridge whose developing member is supported at a position which deviates from a developing positionCANON KK·Filed 1998·Granted Aug 8, 2000·86 cites·18 claims
- 1196US6097908AElectrical connector, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Aug 1, 2000·120 cites·109 claims
- 1295US5937242AProcess cartridge and electrophotographic image forming apparatusCANON KK·Filed 1998·Granted Aug 10, 1999·90 cites·25 claims
- 1392US4634884ASwing-driven solid-state image sensorTOSHIBA KK·Filed 1984·Granted Jan 6, 1987·84 cites·7 claims
- 1490US7440724B2Cleaning member, cleaning unit, process cartridge, and electrophotographic image-forming apparatusCANON KK·Filed 2005·Granted Oct 21, 2008·11 cites·22 claims
- 1590US7086326B2Thermally insulated potYOKOYAMA KATSUNORI·Filed 2002·Granted Aug 8, 2006·105 cites·23 claims
- 1689US6144398AProcess cartridge and electrophotographic image forming apparatusCANON KK·Filed 1998·Granted Nov 7, 2000·48 cites·25 claims
- 1785US6236821B1Process cartridge having a coupling pin and a coupling pin comprising first, second, and third shaft portionCANON KK·Filed 1998·Granted May 22, 2001·37 cites·35 claims
- 1885US4769570APiezo-electric deviceTOSHIBA CERAMICS CO·Filed 1987·Granted Sep 6, 1988·44 cites·9 claims
- 1982US7463854B2Developing apparatus, processing cartridge, and image forming apparatusCANON KK·Filed 2007·Granted Dec 9, 2008·7 cites·33 claims
- 2077US6064841APower supply for a charging apparatus having a contact charger for charging an object to be chargedCANON KK·Filed 1998·Granted May 16, 2000·26 cites·25 claims
- 2174US6044237ADeveloping apparatusCANON KK·Filed 1998·Granted Mar 28, 2000·23 cites·8 claims
- 2270US8019258B2Developing apparatusCANON KK·Filed 2010·Granted Sep 13, 2011·1 cites·7 claims
- 2370US4689516APosition adjustment device with a piezoelectric element as a lock mechanismTOSHIBA KK·Filed 1986·Granted Aug 25, 1987·21 cites·7 claims
- 2470US4510412APiezoelectric displacing deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Apr 9, 1985·21 cites·6 claims
- 2569US7528859B2Electrophotographic image forming apparatusCANON KK·Filed 2007·Granted May 5, 2009·3 cites·4 claims
- 2666US9915913B2Cover for image forming apparatusCANON KK·Filed 2016·Granted Mar 13, 2018·1 cites·7 claims
- 2765US7366451B2Developer conveyance screwCANON KK·Filed 2006·Granted Apr 29, 2008·2 cites·2 claims
- 2864US4554586ASolid state image sensing deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Nov 19, 1985·15 cites·12 claims
- 2963US5765286AReconditioning method for developing rollerCANON KK·Filed 1995·Granted Jun 16, 1998·15 cites·12 claims
- 3061US4862030APiezo-electric deviceTOSHIBA CERAMICS CO·Filed 1988·Granted Aug 29, 1989·15 cites·21 claims
- 3159US4449919AGas combustion apparatus capable of detecting environmental oxygen deficiencyTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted May 22, 1984·16 cites·5 claims
- 3258US7840168B2Developing apparatusCANON KK·Filed 2007·Granted Nov 23, 2010·1 cites·14 claims
- 3350US5768669ADeveloping device having magnet roll fixed by welding and method of assembling the sameCANON KK·Filed 1997·Granted Jun 16, 1998·12 cites·11 claims
- 3446US10054181B2Damping component and damping structureCANON KK·Filed 2016·Granted Aug 21, 2018·0 cites·40 claims
- 3545US9958026B2Damping structureCANON KK·Filed 2016·Granted May 1, 2018·0 cites·16 claims
- 3645US9863496B2Damping component and structure including the sameCANON KK·Filed 2016·Granted Jan 9, 2018·0 cites·17 claims
- 3742US7929009B2Electrophotographic photosensitive drum, electrophotographic image forming apparatus, and method of manufacturing electrophotographic photosensitive drumCANON KK·Filed 2007·Granted Apr 19, 2011·0 cites·6 claims
- 3842US4321155APiezoelectric oxide materialTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted Mar 23, 1982·7 cites·4 claims
- 3934US2016378050A1Drive transmission mechanism and image forming apparatus including drive transmission mechanismCANON KK·Filed 2016·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →