Inventor · disambiguated record
Toshio Fukagai
Also filed as: FUKAGAI TOSHIO
21 granted patents·542 citations·filing 1980–2002
96Inventor score
Files withRICOH KK21
Top patents by PatentIndex Score
21 records- 0198US5427880AElectrophotographic PhotoconductorRICOH KK·Filed 1994·Granted Jun 27, 1995·100 cites·19 claims
- 0294US5322753AElectrophotographic photoconductor and acrylic acid ester polymer for use in the sameRICOH KK·Filed 1992·Granted Jun 21, 1994·42 cites·11 claims
- 0393US5608010APolymers of acrylic acid ester derivatives having a triphenyl amine skeletonRICOH KK·Filed 1995·Granted Mar 4, 1997·42 cites·5 claims
- 0493US5339138AElectrophotographic image formation methodRICOH KK·Filed 1993·Granted Aug 16, 1994·53 cites·1 claims
- 0590US5488137AAcrylic acid ester derivative having a triphenyl amine skeletonRICOH KK·Filed 1994·Granted Jan 30, 1996·26 cites·2 claims
- 0689US5670284AElectrophotographic photoconductorRICOH KK·Filed 1994·Granted Sep 23, 1997·38 cites·9 claims
- 0784US6534227B2Photoreceptor, method of evaluating the photoreceptor, method of producing the photoreceptor, and image formation apparatus using the photoreceptorRICOH KK·Filed 2001·Granted Mar 18, 2003·24 cites·90 claims
- 0884US4390608ALayered charge generator/transport electrophotographic photoconductor uses bisazo pigmentRICOH KK·Filed 1981·Granted Jun 28, 1983·28 cites·11 claims
- 0981US4863822AElectrophotographic photoconductor comprising charge generating and transport layers containing adjuvantsRICOH KK·Filed 1988·Granted Sep 5, 1989·24 cites·31 claims
- 1080US4822705AElectrophotographic photoconductor with layer preventing charge injectionRICOH KK·Filed 1988·Granted Apr 18, 1989·24 cites·10 claims
- 1178US4946766AElectrophotographic photoconductor having intermediate layer comprising indium oxideRICOH KK·Filed 1989·Granted Aug 7, 1990·20 cites·27 claims
- 1276US4481271ALayered electrophotographic photoconductor containing a hydrazoneRICOH KK·Filed 1981·Granted Nov 6, 1984·20 cites·16 claims
- 1374US6649313B2Photoreceptor, method of evaluating a photoreceptor, and method of producing the photoreceptorRICOH KK·Filed 2002·Granted Nov 18, 2003·13 cites·15 claims
- 1474US6521388B2Electrophotographic image forming apparatus, and photoreceptor thereforRICOH KK·Filed 2001·Granted Feb 18, 2003·14 cites·35 claims
- 1574US4906545AElectrophotographic photoconductor with undercoat layer containing metal oxide on supportRICOH KK·Filed 1988·Granted Mar 6, 1990·18 cites·15 claims
- 1668US6830857B2Image forming method, image forming apparatus, process cartridge and photoconductorRICOH KK·Filed 2002·Granted Dec 14, 2004·11 cites·24 claims
- 1768US6821694B2Image forming method, image forming apparatus, process cartridge and photoconductorRICOH KK·Filed 2002·Granted Nov 23, 2004·8 cites·23 claims
- 1865US4284698ALayered electrophotographic photoconductorRICOH KK·Filed 1980·Granted Aug 18, 1981·9 cites·8 claims
- 1961US4830942AElectrophotographic photoconductorRICOH KK·Filed 1987·Granted May 16, 1989·12 cites·15 claims
- 2051US4970131AElectrophotographic photoconductor having overcoat layerRICOH KK·Filed 1989·Granted Nov 13, 1990·8 cites·45 claims
- 2147US5135829AElectrophotographic photoconductor having intermediate layer comprising modified indium oxideRICOH KK·Filed 1990·Granted Aug 4, 1992·8 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →