Inventor · disambiguated record
Tomoyuki Shimada
Also filed as: SHIMADA TOMOYUKI
135 granted patents·4 pending applications·2,481 citations·filing 1987–2019
99Inventor score
Top patents by PatentIndex Score
139 records- 0198US6548216B2Electrophotographic photoconductor, image forming method and apparatus, and process cartridge using the photoconductor, and long-chain alkyl group containing bisphenol compound and polymer made therefromRICOH KK·Filed 2001·Granted Apr 15, 2003·77 cites·17 claims
- 0298US4957838AElectrophotographic photoconductor and triphenylamine compounds for use in the sameRICOH KK·Filed 1989·Granted Sep 18, 1990·79 cites·20 claims
- 0397US6492079B2Electrophotographic photoconductor, image forming apparatus, and process cartridge using the photoconductorRICOH KK·Filed 2001·Granted Dec 10, 2002·84 cites·17 claims
- 0496US7122284B2Electrophotographic photoconductor, image forming method and apparatus, and process cartridge using the photoconductor, and long-chain alkyl group containing bisphenol compound and polymer made therefromRICOH KK·Filed 2005·Granted Oct 17, 2006·17 cites·3 claims
- 0596US6861188B2Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptorRICOH KK·Filed 2002·Granted Mar 1, 2005·77 cites·50 claims
- 0695US9850391B2Ink, ink stored container, inkjet printing method, and inkjet printing deviceFUKUOKA MASAYUKI·Filed 2016·Granted Dec 26, 2017·8 cites·15 claims
- 0795US5942363AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Aug 24, 1999·72 cites·22 claims
- 0895US5846680AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Dec 8, 1998·70 cites·22 claims
- 0994US7018755B2Electrophotographic photoconductor, electrophotography method using the same, electrophotographic apparatus, electrographic apparatus process cartridge and electrophotographic photoconductor outermost surface layer coating solutionRICOH KK·Filed 2003·Granted Mar 28, 2006·48 cites·25 claims
- 1094US6465648B1Reaction product, process of producing same, electrophotographic photoconductor using same, electrophotographic apparatus having the photoconductor, and process cartridge for electrophotographic apparatusRICOH KK·Filed 2000·Granted Oct 15, 2002·37 cites·34 claims
- 1194US6191249B1Electrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1999·Granted Feb 20, 2001·64 cites·22 claims
- 1294US5910561AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1998·Granted Jun 8, 1999·60 cites·22 claims
- 1394US5840454AAromatic polycarbonate and electrophotographic photosensitive medium using sameRICOH KK·Filed 1996·Granted Nov 24, 1998·62 cites·15 claims
- 1494US5789128AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Aug 4, 1998·73 cites·28 claims
- 1594US5747204AElectrophotographic photoconductor and aromatic polycarbonate resin for use in the sameRICOH KK·Filed 1996·Granted May 5, 1998·56 cites·26 claims
- 1693US6596449B2Electrophotographic photoreceptor, and process cartridge and electrophotographic image forming apparatus using the electrophotographic photoreceptorRICOH KK·Filed 2001·Granted Jul 22, 2003·45 cites·63 claims
- 1793US6544701B2Reaction product, process for the production thereof, electrophotographic photoconductor using the reaction product, electrophotographic apparatus using the photoconductor, and process cartridge for electrophotographic apparatusRICOH KK·Filed 2002·Granted Apr 8, 2003·41 cites·40 claims
- 1893US6316577B1Electrophotographic photoconductor and aromatic polycarbonate resin for use thereinHODOGAYA CHEMICAL CO LTD·Filed 2000·Granted Nov 13, 2001·34 cites·22 claims
- 1993US6069224AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1998·Granted May 30, 2000·54 cites·28 claims
- 2093US5853935AElectrophotographic photoconductorRICOH KK·Filed 1998·Granted Dec 29, 1998·63 cites·16 claims
- 2193US5153073AElectroluminescent deviceRICOH KK·Filed 1991·Granted Oct 6, 1992·80 cites·8 claims
- 2292US5219692AElectrophotographic photoconductors and tertiary amine compounds having condensed polycyclic group for use in the sameRICOH KK·Filed 1990·Granted Jun 15, 1993·33 cites·26 claims
- 2391US6027846AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Feb 22, 2000·49 cites·7 claims
- 2491US5723243AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Mar 3, 1998·57 cites·44 claims
- 2590US7851119B2Electrophotographic photoconductor, method for producing the same, image forming process, image forming apparatus and process cartridgeRICOH CO LTD·Filed 2007·Granted Dec 14, 2010·12 cites·6 claims
- 2690US6093784AElectrophotographic photoconductor and polycarbonate resin for use thereinRICOH KK·Filed 1994·Granted Jul 25, 2000·40 cites·28 claims
- 2789US10233341B2Ink, method of manufacturing ink, and ink cartridgeKOIZUKA YUUSUKE·Filed 2016·Granted Mar 19, 2019·2 cites·6 claims
- 2889US6018014AAromatic polycarbonate and electrophotographic photosensitive medium using sameRICOH KK·Filed 1998·Granted Jan 25, 2000·41 cites·9 claims
- 2989US5672728AMethod for preparing the pyrenylamine derivativesRICOH KK·Filed 1996·Granted Sep 30, 1997·25 cites·3 claims
- 3089US5457232APyrenylamine derivatives having unsaturated bondRICOH KK·Filed 1994·Granted Oct 10, 1995·27 cites·3 claims
- 3189US5344985AAldehyde intermediates for the preparation of pyrenylamine derivatives having unsaturated bondRICOH KK·Filed 1992·Granted Sep 6, 1994·29 cites·9 claims
- 3288US9353274B1Ink, ink cartridge, inkjet recording device, and copolymerKATOH KEITA·Filed 2015·Granted May 31, 2016·2 cites·10 claims
- 3388US6524761B2Mixture of titanyltetraazaporphyrin compounds and electrophotographic photoconductor using the sameRICOH KK·Filed 2001·Granted Feb 25, 2003·19 cites·9 claims
- 3488US5599995AElectrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediateRICOH KK·Filed 1995·Granted Feb 4, 1997·25 cites·1 claims
- 3587US6974654B2Electrophotographic photoconductor, image forming method and apparatus, and process cartridge using the photoconductor, and long-chain alkyl group containing bisphenol compound and polymer made therefromRICOH KK·Filed 2003·Granted Dec 13, 2005·19 cites·17 claims
- 3687US5576132AElectrophotographic photoconductor comprising pyrenylamine derivativeRICOH KK·Filed 1995·Granted Nov 19, 1996·23 cites·7 claims
- 3786US7056633B2Electrophotographic photoconductor, image forming method and apparatus, and process cartidge using the photocondutor, and long-chain alkyl group containing bisphenol compound and polymer made therefromRICOH KK·Filed 2003·Granted Jun 6, 2006·19 cites·39 claims
- 3886US5587516AElectrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediateRICOH KK·Filed 1995·Granted Dec 24, 1996·21 cites·1 claims
- 3986US5370954APhotoconductive composition containing trisazo and disazo compoundsRICOH KK·Filed 1993·Granted Dec 6, 1994·25 cites·20 claims
- 4085US7381511B2Photoreceptor, image forming method and image forming apparatus using the photoreceptor, process cartridge using the photoreceptor and coating liquid for the photoreceptorRICOH KK·Filed 2004·Granted Jun 3, 2008·27 cites·23 claims
- 4185US5312707AElectrophotographic photoconductor and diamine compounds for use in the sameRICOH KK·Filed 1992·Granted May 17, 1994·35 cites·23 claims
- 4284US6313288B1Mixture of titanyltetraazaporphyrin compounds and electrophotographic photoconductor using the sameRICOH KK·Filed 1999·Granted Nov 6, 2001·30 cites·7 claims
- 4384US5616805AMethods for preparing pyrenylamine derivatives and intermediatesRICOH KK·Filed 1995·Granted Apr 1, 1997·24 cites·2 claims
- 4483US6184362B1Electrophotographic photoconductor, azo compounds for use in the same, and intermediates for producing the azo compoundsRICOH KK·Filed 2000·Granted Feb 6, 2001·15 cites·4 claims
- 4583US5981124AElectrophotographic photoconductor, azo compounds for use in the same, and intermediates for producing the azo compoundsRICOH KK·Filed 1995·Granted Nov 9, 1999·24 cites·1 claims
- 4683US5830980AElectrophotographic photoconductor, aromatic polycarbonate resin for use in the same, and method of producing the aromatic polycarbonate resinRICOH KK·Filed 1997·Granted Nov 3, 1998·28 cites·8 claims
- 4781US8304153B2Electrophotographic photoreceptor, electrophotographic image forming method, electrophotographic image forming apparatus, electrophotographic process cartridgeSHIMADA TOMOYUKI·Filed 2010·Granted Nov 6, 2012·3 cites·19 claims
- 4881US7112392B2Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge for image forming apparatus using the electrophotographic photoreceptorRICOH KK·Filed 2004·Granted Sep 26, 2006·18 cites·10 claims
- 4980US6271356B1Electrophotographic photoconductor, azo compounds for use in the same, and intermediates for producing the azo compoundsRICOH KK·Filed 2000·Granted Aug 7, 2001·12 cites·6 claims
- 5078US6103435AElectrophotographic photoconductor, AZO compounds for use in the same, and intermediates for producing the AZO compoundsRICOH KK·Filed 1999·Granted Aug 15, 2000·18 cites·5 claims
Showing the top 50 of 139 patent records by PatentIndex Score.
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