Inventor · disambiguated record
Kohkoku Ri
Also filed as: RI KOHKOKU
11 granted patents·539 citations·filing 1999–2004
93Inventor score
Top patents by PatentIndex Score
11 records- 0198US6210848B1Electrophotographic photoconductor, and process cartridge and image forming apparatus using the sameRICOH KK·Filed 2000·Granted Apr 3, 2001·103 cites·26 claims
- 0297US6444387B2Image bearing material, electrophotographic photoreceptor using the image bearing material, and image forming apparatus using the photoreceptorRICOH KK·Filed 2000·Granted Sep 3, 2002·84 cites·50 claims
- 0396US6187492B1Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductorRICOH KK·Filed 1999·Granted Feb 13, 2001·81 cites·6 claims
- 0493US6576386B1Aromatic block polycarbonate resin, diphenol compound for preparation of the polycarbonate resin, electrophotographic photoconductor, electrophotographic image forming apparatus and process, and process cartridgeRICOH KK·Filed 2000·Granted Jun 10, 2003·39 cites·4 claims
- 0593US6303736B1Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductorRICOH KK·Filed 2000·Granted Oct 16, 2001·37 cites·6 claims
- 0692US6486293B1Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductorRICOH KK·Filed 2000·Granted Nov 26, 2002·36 cites·18 claims
- 0792US6187494B1Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductorRICOH KK·Filed 1999·Granted Feb 13, 2001·62 cites·11 claims
- 0891US6790571B2Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatusRICOH KK·Filed 2002·Granted Sep 14, 2004·31 cites·6 claims
- 0990US6664361B2Diphenol compound, aromatic polycarbonate and electrophotoconductive photoconductorRICOH KK·Filed 2001·Granted Dec 16, 2003·35 cites·19 claims
- 1082US6919419B2Aromatic block polycarbonate resin, diphenol compound for preparation of the polycarbonate resin, electro-photographic photoconductor, electro-photographic image forming apparatus and process, and process cartridgeHODOGAYA CHEMICAL CO LTD·Filed 2003·Granted Jul 19, 2005·19 cites·11 claims
- 1178US7071285B2Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatusRICOH KK·Filed 2004·Granted Jul 4, 2006·12 cites·39 claims
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