Inventor · disambiguated record
Katsuaki Hirai
Also filed as: HIRAI KATSUAKI
26 granted patents·3 pending applications·599 citations·filing 1990–2008
97Inventor score
Top patents by PatentIndex Score
29 records- 0197US6474633B1Stapler with interchangeable cartridgesCANON KK·Filed 2000·Granted Nov 5, 2002·69 cites·10 claims
- 0297US6264194B1Sheet handling device and images forming apparatus using the deviceCANON KK·Filed 1999·Granted Jul 24, 2001·81 cites·16 claims
- 0397US5897250ASheet processing apparatusCANON KK·Filed 1997·Granted Apr 27, 1999·86 cites·39 claims
- 0494US5132741ASheet original feeding apparatus and image forming systemCANON KK·Filed 1990·Granted Jul 21, 1992·53 cites·15 claims
- 0591US5573233ASheet post-processing apparatus with malfunction operationCANON KK·Filed 1995·Granted Nov 12, 1996·48 cites·11 claims
- 0690US7942399B2Sheet processing apparatus and image forming apparatus having the sameCANON KK·Filed 2008·Granted May 17, 2011·12 cites·25 claims
- 0789US6283470B1Sheet treating apparatus with aligning device and image forming apparatus having the sameCANON KK·Filed 1999·Granted Sep 4, 2001·42 cites·4 claims
- 0886US6860478B2Sheet processor with hole punch controller which avoids punching when preexisting hole exists and image forming apparatus provided with the sameCANON KK·Filed 2002·Granted Mar 1, 2005·24 cites·12 claims
- 0984US7380779B2Sheet processing systemCANON KK·Filed 2004·Granted Jun 3, 2008·17 cites·8 claims
- 1082US7296791B2Image forming apparatus, sheet containing device, sheet inserting device, book-binding system, and sheet processing apparatusCANON KK·Filed 2003·Granted Nov 20, 2007·17 cites·18 claims
- 1181US5671917AOriginal convey apparatus with last original detection sensorCANON APTEX INC·Filed 1996·Granted Sep 30, 1997·31 cites·14 claims
- 1278US5465949AAutomatic sheet feeding device with selectively applied pressure memberCANON KK·Filed 1995·Granted Nov 14, 1995·25 cites·20 claims
- 1372US7426367B2Sheet processing apparatus and image forming apparatusCANON KK·Filed 2005·Granted Sep 16, 2008·3 cites·17 claims
- 1470US6374077B1Sheet processing apparatus and image forming apparatus having thisCANON KK·Filed 1998·Granted Apr 16, 2002·20 cites·52 claims
- 1569US5932722AHydroxygallium phthalocyanine compound, production process therefor and electrophotographic photosensitive member using the compoundCANON KK·Filed 1999·Granted Aug 3, 1999·17 cites·2 claims
- 1667US7780164B2Sheet processing apparatus and image forming apparatusCANON KK·Filed 2008·Granted Aug 24, 2010·2 cites·13 claims
- 1766US7134370B2Sheet processing apparatusCANON KK·Filed 2003·Granted Nov 14, 2006·12 cites·12 claims
- 1860US7673868B2Sheet processing systemCANON KK·Filed 2008·Granted Mar 9, 2010·1 cites·6 claims
- 1958US7120373B2Sheet-processing systemCANON KK·Filed 2004·Granted Oct 10, 2006·5 cites·3 claims
- 2049US7437093B2Sheet-processing systemCANON KK·Filed 2006·Granted Oct 14, 2008·0 cites·12 claims
- 2149US2008024811A1Sheet processing systemCANON KK·Filed 2007·Application pending·0 cites
- 2247US5617196AOriginal feeding method with originals mounted side by sideCANON KK·Filed 1995·Granted Apr 1, 1997·8 cites·34 claims
- 2347US5192976ASheet original feeding apparatus with detachable auxiliary feederCANON KK·Filed 1992·Granted Mar 9, 1993·7 cites·7 claims
- 2445US5871208ASheet convey apparatus with horizontal sheet stacking plate above convey meansCANON KK·Filed 1997·Granted Feb 16, 1999·7 cites·7 claims
- 2542US6155552ASorter and image forming apparatusCANON KK·Filed 1997·Granted Dec 5, 2000·6 cites·35 claims
- 2641US8155576B2Sheet processing apparatus and image forming apparatusKATO DAIJIRO·Filed 2008·Granted Apr 10, 2012·0 cites·14 claims
- 2739US2005084308A1Sheet processing systemCANON KK·Filed 2004·Application pending·0 cites
- 2838US5229816AOriginal image reading deviceCANON KK·Filed 1991·Granted Jul 20, 1993·6 cites·17 claims
- 2936US2005082734A1Sheet processing systemCANON KK·Filed 2004·Application pending·0 cites
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