Inventor · disambiguated record
Hiroyuki Shirai
Also filed as: SHIRAI HIROYUKI
18 granted patents·1 pending application·1,178 citations·filing 1976–2014
96Inventor score
Top patents by PatentIndex Score
19 records- 0199US5294960ADetachable two-frame process cartridge for an image forming apparatusCANON KK·Filed 1993·Granted Mar 15, 1994·144 cites·56 claims
- 0298US5623328AProcess cartridge and image forming system on which process cartridge is mountableCANON KK·Filed 1994·Granted Apr 22, 1997·146 cites·45 claims
- 0397US5828928AProcess 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
- 0497US5470635ABlade member having a flat-surface side and an angled-surface sideCANON KK·Filed 1993·Granted Nov 28, 1995·126 cites·31 claims
- 0597US5208634AProcess cartridge detachably mountable to image forming apparatus featuring an injectable sealing memberCANON KK·Filed 1991·Granted May 4, 1993·93 cites·30 claims
- 0696US5907749AProcess cartridge and image forming apparatus usable therewithCANON KK·Filed 1997·Granted May 25, 1999·65 cites·99 claims
- 0796US5608509AProcess cartridge with blade member having a flat-surface side and an angled-surface sideCANON KK·Filed 1995·Granted Mar 4, 1997·109 cites·37 claims
- 0895US5134960AToner seal for developing unit in process cartridgeCANON KK·Filed 1990·Granted Aug 4, 1992·84 cites·27 claims
- 0994US5878304AProcess cartridge having shiftable cover with inner protrusionCANON KK·Filed 1995·Granted Mar 2, 1999·63 cites·26 claims
- 1093US6118961ADetachable two-frame process cartridge for an image forming apparatusCANON KK·Filed 1997·Granted Sep 12, 2000·46 cites·125 claims
- 1193US5987278AProcess cartridge and image forming apparatus usable therewithCANON KK·Filed 1997·Granted Nov 16, 1999·46 cites·30 claims
- 1292US5682579ADetachable two-frame process cartridge for an image forming apparatusCANON KK·Filed 1996·Granted Oct 28, 1997·42 cites·39 claims
- 1390US6075956AProcess cartridge having shiftable cover and guide member for directing airflowCANON KK·Filed 1997·Granted Jun 13, 2000·41 cites·28 claims
- 1486US5383011ACleaning device, process cartridge incorporating the cleaning device, and image forming apparatus using the cleaning deviceCANON KK·Filed 1992·Granted Jan 17, 1995·33 cites·22 claims
- 1566US6097911AProcess cartridge having shiftable cover with specific spacing between cover and cartridgeCANON KK·Filed 1995·Granted Aug 1, 2000·14 cites·8 claims
- 1654US9208960B2Electrode for vacuum circuit breaker, and vacuum interrupter using the electrodeHITACHI LTD·Filed 2014·Granted Dec 8, 2015·0 cites·6 claims
- 1743US2015060409A1Vacuum SwitchHITACHI LTD·Filed 2013·Application pending·0 cites
- 1840US4079819AInternal shoe drum brake adjuster with mechanically operated brakeNISSAN MOTOR·Filed 1976·Granted Mar 21, 1978·9 cites·3 claims
- 1939USD355208SDeveloping device for copying machineCANON KK·Filed 1992·Granted Feb 7, 1995·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →