Inventor · disambiguated record
Shozo Ishikawa
Also filed as: ISHIKAWA SHOZO
40 granted patents·853 citations·filing 1975–2010
98Inventor score
Top patents by PatentIndex Score
40 records- 0198US4399207AElectrophotographic photosensitive member with hydrazone compoundCANON KK·Filed 1982·Granted Aug 16, 1983·88 cites·16 claims
- 0296US4551404ADisazo electrophotographic photosensitive memberCANON KK·Filed 1982·Granted Nov 5, 1985·40 cites·15 claims
- 0396US4399208AElectrophotographic photosensitive memberCANON KK·Filed 1981·Granted Aug 16, 1983·89 cites·51 claims
- 0493US4315982AStyryl pyrazoline compounds, process for production thereof, and electrophoto graphic material comprising said compoundsCOPYER CO·Filed 1981·Granted Feb 16, 1982·82 cites·24 claims
- 0592US4666810APhotosensitive member for electrophotography comprising azo pigmentsCANON KK·Filed 1986·Granted May 19, 1987·34 cites·5 claims
- 0690US4931371AElectrophotographic photosensitive memberCANON KK·Filed 1988·Granted Jun 5, 1990·30 cites·17 claims
- 0790US4390611AElectrophotographic photosensitive azo pigment containing membersISHIKAWA SHOZO·Filed 1981·Granted Jun 28, 1983·41 cites·72 claims
- 0888US4554231AElectrophotographic photosensitive memberCANON KK·Filed 1983·Granted Nov 19, 1985·31 cites·18 claims
- 0988US4446217AElectrophotographic photosensitive member having a hydrazone containing layerCANON KK·Filed 1982·Granted May 1, 1984·19 cites·27 claims
- 1088US4420548AElectrophotographic member with hydrazone or ketazine compoundsCANON KK·Filed 1981·Granted Dec 13, 1983·40 cites·42 claims
- 1187US4471040AElectrophotographic disazo photosensitive memberCANON KK·Filed 1981·Granted Sep 11, 1984·29 cites·171 claims
- 1283US4423129AElectrophotographic member having layer containing methylidenyl hydrazone compoundCANON KK·Filed 1981·Granted Dec 27, 1983·25 cites·39 claims
- 1382US4456671AElectrophotographic photosensitive member having a photosensitive layer containing a hydrazone compoundCANON KK·Filed 1982·Granted Jun 26, 1984·24 cites·26 claims
- 1481US4830944AFunction separated photosensitive member having a diphenylamine derivative disazo charge generation materialCANON KK·Filed 1986·Granted May 16, 1989·23 cites·18 claims
- 1581US4427753AElectrophotographic photosensitive member with disazo or trisazo compoundCANON KK·Filed 1982·Granted Jan 24, 1984·22 cites·76 claims
- 1679US4487824AElectrophotographic photosensitive member containing a halogen substituted hydrazoneCANON KK·Filed 1983·Granted Dec 11, 1984·20 cites·25 claims
- 1778US4743523APhotosensitive member for electrophotographyCANON KK·Filed 1986·Granted May 10, 1988·21 cites·17 claims
- 1878US4702982AElectrophotographic photosensitive member comprising disazo pigmentCANON KK·Filed 1986·Granted Oct 27, 1987·13 cites·10 claims
- 1978US4495264AElectrophotographic photosensitive member comprising disazo compoundCANON KK·Filed 1984·Granted Jan 22, 1985·11 cites·41 claims
- 2073US4500619AElectrophotographic photosensitive member with oxadiazole containing disazo compoundCOPYER CO·Filed 1984·Granted Feb 19, 1985·9 cites·11 claims
- 2171US4760003AElectrophotographic photosensitive member containing disazo compoundCANON KK·Filed 1986·Granted Jul 26, 1988·17 cites·8 claims
- 2267US4399206ADisazo electrophotographic photosensitive memberCANON KK·Filed 1981·Granted Aug 16, 1983·13 cites·41 claims
- 2365US7825514B2Substrate for semiconductor device, resin-sealed semiconductor device, method for manufacturing said substrate for semiconductor device and method for manufacturing said resin-sealed semiconductor deviceDAINIPPON PRINTING CO LTD·Filed 2008·Granted Nov 2, 2010·2 cites·15 claims
- 2465US4413045AMultilayer electrophotographic photosensitive member comprises disazo charge generator layer, hydrazone transport layerCANON KK·Filed 1982·Granted Nov 1, 1983·7 cites·7 claims
- 2562US4501808ARecording medium and process employing a photosensitive organic filmCANON KK·Filed 1983·Granted Feb 26, 1985·21 cites·56 claims
- 2662US4454211AElectrophotographic photosensitive member with pyrazoline charge transport materialCANON KK·Filed 1982·Granted Jun 12, 1984·11 cites·9 claims
- 2762US4391889AElectrophotographic photosensitive member with benzimidazole ring containing hydrazonesCANON KK·Filed 1981·Granted Jul 5, 1983·12 cites·17 claims
- 2862US4359513AElectrophotographic light-sensitive disazo compounds having diphenylacrylonitrile groupCOPYER CO·Filed 1981·Granted Nov 16, 1982·11 cites·12 claims
- 2961US4359515ADisazo electrophotographic light-sensitive mediaCOPYER CO·Filed 1981·Granted Nov 16, 1982·11 cites·16 claims
- 3054US4788119AElectrophotographic photosensitive member containing a disazo pigmentCANON KK·Filed 1986·Granted Nov 29, 1988·9 cites·7 claims
- 3151US4735882ATrisazo photsensitive member for electrophotographyCANON KK·Filed 1986·Granted Apr 5, 1988·8 cites·4 claims
- 3249US7947598B2Substrate for semiconductor device, resin-sealed semiconductor device, method for manufacturing said substrate for semiconductor device and method for manufacturing said resin-sealed semiconductor deviceDAINIPPON PRINTING CO LTD·Filed 2010·Granted May 24, 2011·0 cites·5 claims
- 3348US4418133ADisazo photoconductive material and electrophotographic photosensitive member having disazo pigment layerCANON KK·Filed 1982·Granted Nov 29, 1983·6 cites·26 claims
- 3446US4268595AElectrostatic recording material and method for the production thereofCOPYER CO·Filed 1979·Granted May 19, 1981·8 cites·19 claims
- 3543US4535043AElectrophotographic photosensitive memberCANON KK·Filed 1984·Granted Aug 13, 1985·5 cites·8 claims
- 3643US4419428AElectrophotographic light-sensitive media having a dis-azo compoundCOPYER CO·Filed 1981·Granted Dec 6, 1983·5 cites·14 claims
- 3743US4356243AElectrophotographic media with benzoxazole group containing dis-azo compoundCOPYER CO·Filed 1981·Granted Oct 26, 1982·5 cites·16 claims
- 3842US4097646AElectrostatic recording material having a dielectric copolymer coated layerCOPYER CO·Filed 1975·Granted Jun 27, 1978·4 cites·10 claims
- 3940US4610943AElectrophotographic photosensitive member contains disazo photoconductive compoundCANON KK·Filed 1985·Granted Sep 9, 1986·4 cites·6 claims
- 4036US4485159ALaminate type electrophotographic light-sensitive materialCOPYER CO·Filed 1980·Granted Nov 27, 1984·3 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →