Inventor
OGUMA TORU
JP84 patents
⚠️ This page may combine multiple inventors who share the name “OGUMA TORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
48 patentsUS6272299B1Aug 7, 2001
Process cartridge and electrophotographic image forming apparatus
CANON KK190 citations99
US5768658AJun 16, 1998
Electrode member, developing apparatus, process cartridge and image forming apparatus
CANON KK195 citations99
US7062192B2Jun 13, 2006
Electrophotographic image forming apparatus, process cartridge and discharge preventing mechanism
CANON KK68 citations98
US7024131B2Apr 4, 2006
Process cartridge assembling method, process cartridge remanufacturing method, and connecting member
CANON KK121 citations98
US6993264B2Jan 31, 2006
Process cartridge and electrophotographic image forming apparatus
CANON KK76 citations98
US6735405B2May 11, 2004
Method of remanufacturing process cartridge and developing device
CANON KK76 citations98
US6266500B1Jul 24, 2001
Developing apparatus and process cartridge
CANON KK98 citations98
US6097909AAug 1, 2000
Photosensitive drum mounting method, process cartridge and electrophotographic image forming apparatus
CANON KK150 citations98
US5790923AAug 4, 1998
Developing apparatus
CANON KK120 citations98
US7162176B2Jan 9, 2007
Process cartridge and electrophotographic image forming apparatus
CANON KK41 citations96
US6832057B2Dec 14, 2004
Developing device, process cartridge, and electrophotographic image forming apparatus
CANON KK56 citations96
US6377759B1Apr 23, 2002
Process cartridge, electrophotographic image forming apparatus and developer amount detecting member
CANON KK62 citations96
US5812909ASep 22, 1998
Developing device
CANON KK71 citations96
US5455665AOct 3, 1995
Cleaning apparatus with a member to prevent peeling of a guide member, and a process cartridge and image forming apparatus using the same
CANON KK79 citations95
US10551790B2Feb 4, 2020
Cartridge and electrophotographic image forming apparatus
CANON KK16 citations94
USD863419SOct 15, 2019
Flange coupling for process cartridge for image forming apparatus
CANON KK34 citations94
USD845384SApr 9, 2019
Process cartridge for image forming apparatus
CANON KK17 citations94
US10197967B2Feb 5, 2019
Cartridge and electrophotographic image forming apparatus
CANON KK14 citations94
US9778613B2Oct 3, 2017
Cartridge and electrophotographic image forming apparatus
CANON KK22 citations94
US9772598B2Sep 26, 2017
Cartridge and electrophotographic image forming apparatus
CANON KK21 citations94
US7865115B2Jan 4, 2011
Process cartridge, electrophotographic image forming apparatus, method of manufacturing a process cartridge, and method of remanufacturing a process cartridge
CANON KK29 citations93
USD583860SDec 30, 2008
Toner cartridge
CANON KK19 citations93
US7296341B2Nov 20, 2007
Disassembling tool for process cartridge
CANON KK39 citations93
US7095967B2Aug 22, 2006
Image developing apparatus, process cartridge, electrophotographic image forming apparatus, and developing unit frame
CANON KK21 citations93
US7073251B2Jul 11, 2006
Disassembling tool for process cartridge
CANON KK42 citations93
US6952544B2Oct 4, 2005
Method of reproducing process cartridge or developing apparatus
CANON KK45 citations93
US6868243B2Mar 15, 2005
Image forming apparatus having process cartridge with connection arrangement for side frame bodies
CANON KK52 citations93
US6859627B2Feb 22, 2005
Image developing apparatus, process cartridge, electrophotographic image forming apparatus, and developing unit frame
CANON KK19 citations93
US6804476B2Oct 12, 2004
Process cartridge and developing device detachably attachable to image forming apparatus main body and having developer seal member with grip portion, and such image forming apparatus
CANON KK24 citations93
US6804475B2Oct 12, 2004
Process cartridge comprising grounding, charging bias, and developing bias contacts and input and output contacts, and electrophotographic image forming apparatus to which the process cartridge is detachably mountable
CANON KK51 citations93
US6671477B2Dec 30, 2003
Developing device, process cartridge and image forming apparatus
CANON KK28 citations93
US6625413B2Sep 23, 2003
Developing device, process cartridge and electrophotographic image forming apparatus
CANON KK22 citations93
US6606469B2Aug 12, 2003
Developing apparatus mounted on image forming apparatus
CANON KK27 citations93
US6594454B2Jul 15, 2003
Electric contact member and developing device, process cartridge, and electrophotographic image-forming apparatus using the electric contact member
CANON KK27 citations93
US6571070B2May 27, 2003
Process cartridge and image forming apparatus
CANON KK40 citations93
US6512895B2Jan 28, 2003
Process cartridge and electrophotographic image forming system
CANON KK39 citations93
US6229979B1May 8, 2001
Developing 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 bearing
CANON KK31 citations93
US6173130B1Jan 9, 2001
Development agent container, process cartridge, and image forming apparatus
CANON KK32 citations93
US6144821ANov 7, 2000
Shutter member and process cartridge
CANON KK31 citations93
US6021291AFeb 1, 2000
Magnetic seal mounting method developing blade exchanging method and process cartridge
CANON KK30 citations93
US7315706B2Jan 1, 2008
Process cartridge and electrophotographic image forming apparatus
CANON KK33 citations92
US7239823B2Jul 3, 2007
Electrophotographic image forming apparatus, process cartridge and discharge preventing mechanism
CANON KK21 citations92
US10969730B2Apr 6, 2021
Image forming apparatus and image forming unit
CANON KK9 citations85
US11500324B2Nov 15, 2022
Cartridge and electrophotographic image forming apparatus
CANON KK5 citations84
US11099518B2Aug 24, 2021
Cartridge and electrophotographic image forming apparatus
CANON KK5 citations84
USD585482SJan 27, 2009
Toner cartridge
CANON KK10 citations84
US6892035B2May 10, 2005
Developing device, a process cartridge, and an electrophotographic image forming apparatus for detecting an amount of developer
CANON KK19 citations84
USD492958SJul 13, 2004
Image forming apparatus
CANON KK15 citations84
KOMATSU NORIYUKI
1 patentURATANI SHUNSUKE
1 patentShowing the top 50 of 84 patents by PatentIndex Score.