Inventor · disambiguated record
Kazushi Watanabe
Also filed as: WATANABE KAZUSHI
137 granted patents·3 pending applications·9,575 citations·filing 1988–2018
99Inventor score
Top patents by PatentIndex Score
140 records- 0199US7403733B2Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2007·Granted Jul 22, 2008·68 cites·14 claims
- 0299US6501927B1Process cartridge and photosensitive drum driving mountCANON KK·Filed 2000·Granted Dec 31, 2002·124 cites·23 claims
- 0399US6501926B1Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2000·Granted Dec 31, 2002·186 cites·23 claims
- 0499US6349188B1Process cartridge, electrophotographic image forming apparatus, driving force transmission part and electrophotographic photosensitive drumCANON KK·Filed 2000·Granted Feb 19, 2002·126 cites·10 claims
- 0599US6330409B1Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2000·Granted Dec 11, 2001·107 cites·10 claims
- 0699US6240266B1Process cartridge and drum mount for photosensitive drumCANON KK·Filed 1997·Granted May 29, 2001·245 cites·91 claims
- 0799US6226478B1Process cartridge having drive mount for photosensitive drumCANON KK·Filed 1997·Granted May 1, 2001·175 cites·83 claims
- 0899US6128454AProcess cartridge, electrophotographic image forming apparatus, driving force transmission part, and electrophotographic photosensitive drumCANON KK·Filed 1999·Granted Oct 3, 2000·185 cites·62 claims
- 0999US5903803AProcess cartridge, electrophotographic image forming apparatus, driving force transmission part, and electrophotographic photosensitive drumCANON KK·Filed 1996·Granted May 11, 1999·356 cites·146 claims
- 1099US5463446ARotary member a process cartridge and an assembling method for rolling membersCANON KK·Filed 1993·Granted Oct 31, 1995·190 cites·17 claims
- 1199US5404198AProcess cartridge and image forming apparatusCANON KK·Filed 1992·Granted Apr 4, 1995·124 cites·59 claims
- 1299US5331372AProcess cartridge and image forming apparatus on which process cartridge is mountableCANON KK·Filed 1992·Granted Jul 19, 1994·135 cites·33 claims
- 1399US5294960ADetachable two-frame process cartridge for an image forming apparatusCANON KK·Filed 1993·Granted Mar 15, 1994·144 cites·56 claims
- 1498US7274896B2Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2006·Granted Sep 25, 2007·34 cites·9 claims
- 1598US7092655B2Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2005·Granted Aug 15, 2006·51 cites·31 claims
- 1698US6999696B2Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2005·Granted Feb 14, 2006·52 cites·40 claims
- 1798US6885838B2Electrophotographic photosensitive drum having twisted projection coupling member engageable with twisted hole driving coupling of motor, and process cartridge and electrophotographic image forming apparatus using sameCANON KK·Filed 2003·Granted Apr 26, 2005·62 cites·23 claims
- 1898US6400914B1Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Jun 4, 2002·196 cites·85 claims
- 1998US6336018B1Electrophotographic image forming apparatus, process cartridge, and drive mount for photosensitive drumCANON KK·Filed 1997·Granted Jan 1, 2002·189 cites·79 claims
- 2098US6272299B1Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Aug 7, 2001·190 cites·38 claims
- 2198US6175706B1Process cartridge, electrophotographic image forming apparatus driving force transmission part and electrophotographic photosensitive drumCANON KK·Filed 1997·Granted Jan 16, 2001·181 cites·69 claims
- 2298US6169866B1Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Jan 2, 2001·120 cites·54 claims
- 2398US6163665AProcess cartridge electrophotographic image forming apparatus and positioning there betweenCANON KK·Filed 1997·Granted Dec 19, 2000·138 cites·72 claims
- 2498US6097909APhotosensitive drum mounting method, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Aug 1, 2000·150 cites·43 claims
- 2598US6029032AProcess cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Feb 22, 2000·169 cites·81 claims
- 2698US6006058AProcess cartridge and electrophotographic image forming apparatus having an improved driving systemCANON KK·Filed 1997·Granted Dec 21, 1999·154 cites·61 claims
- 2798US5937239AProcess cartridge and electrophotographic image forming apparatusCANON KK·Filed 1996·Granted Aug 10, 1999·137 cites·37 claims
- 2898US5809374AProcess cartridge including a seal member formed from a liquid-foam materialCANON KK·Filed 1996·Granted Sep 15, 1998·127 cites·15 claims
- 2998US5768658AElectrode member, developing apparatus, process cartridge and image forming apparatusCANON KK·Filed 1996·Granted Jun 16, 1998·195 cites·36 claims
- 3098US5669042AImage forming system having means to support at least one component of a process cartridgeCANON KK·Filed 1994·Granted Sep 16, 1997·128 cites·88 claims
- 3198US5659847AProcess cartridge having positioning member for positioning optical deviceCANON KK·Filed 1992·Granted Aug 19, 1997·110 cites·40 claims
- 3298US5640650AProcess cartridge including a spaced rolling members support feature and image forming apparatus using the sameCANON KK·Filed 1995·Granted Jun 17, 1997·152 cites·31 claims
- 3398US5623328AProcess cartridge and image forming system on which process cartridge is mountableCANON KK·Filed 1994·Granted Apr 22, 1997·146 cites·45 claims
- 3498US5583613AImage forming systemCANON KK·Filed 1994·Granted Dec 10, 1996·97 cites·45 claims
- 3598US5488459AImage bearing member having an asymmetrically weighted base, process cartridge and image forming apparatusCANON KK·Filed 1993·Granted Jan 30, 1996·113 cites·33 claims
- 3698US5475470AProcess cartridge and image forming system on which the process cartridge is mountable using a handgripCANON KK·Filed 1994·Granted Dec 12, 1995·109 cites·34 claims
- 3798US5345294AProcess cartridge and image forming apparatus using sameCANON KK·Filed 1992·Granted Sep 6, 1994·127 cites·32 claims
- 3898US5223893AProcess cartridge detachably mountable to image forming apparatusCANON KK·Filed 1990·Granted Jun 29, 1993·105 cites·38 claims
- 3998US5151734AProcess cartridge detachably mountable to image forming apparatus featuring a peripherally supported image bearing drumCANON KK·Filed 1990·Granted Sep 29, 1992·114 cites·24 claims
- 4098US5095335ACopier with retractable charging unit to prevent damage to drum when removing process cartridgeCANON KK·Filed 1990·Granted Mar 10, 1992·131 cites·11 claims
- 4197US7489885B2Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2007·Granted Feb 10, 2009·16 cites·26 claims
- 4297US7248814B2Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2006·Granted Jul 24, 2007·19 cites·10 claims
- 4397US6246849B1Bearing, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 1997·Granted Jun 12, 2001·119 cites·61 claims
- 4497US6070028AProcess cartridge, electrophotographic image forming apparatus and coupling therebetweenCANON KK·Filed 1997·Granted May 30, 2000·114 cites·37 claims
- 4597US6016413AAssembling method of process cartridge, assembling method and process cartridgeCANON KK·Filed 1997·Granted Jan 18, 2000·114 cites·16 claims
- 4697US5966568AProcess 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
- 4797US5926672APhotosensitive drum provided in an image forming apparatus including helical gears disposed at an end of the drumCANON KK·Filed 1996·Granted Jul 20, 1999·101 cites·70 claims
- 4897US5828928AProcess cartridge mountable in an image forming system and a method for assembling a cleaning deviceCANON KK·Filed 1995·Granted Oct 27, 1998·114 cites·32 claims
- 4997US5790923ADeveloping apparatusCANON KK·Filed 1997·Granted Aug 4, 1998·120 cites·8 claims
- 5097US5602623APhotosensitive drum provided in an image forming apparatus including gears disposed at an end of drumCANON KK·Filed 1995·Granted Feb 11, 1997·108 cites·21 claims
Showing the top 50 of 140 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →