Inventor · disambiguated record
Yasuo Sakaguchi
Also filed as: SAKAGUCHI YASUO
61 granted patents·1 pending application·1,246 citations·filing 1972–2018
99Inventor score
Files withFUJI XEROX CO LTD42KUREHA CHEMICAL IND CO LTD13EXXON CHEMICAL PATENTS INC1FUJI PHOTO FILM CO LTD1HITACHI METALS LTD1
Top patents by PatentIndex Score
62 records- 0197US5302479ACrystals of hydroxygallium phthalocyanine, method of preparing the crystals, photoconductive material comprising the crystals, and electrophotographic photoreceptor comprising the materialFUJI XEROX CO LTD·Filed 1992·Granted Apr 12, 1994·97 cites·23 claims
- 0297US5298617AOxytitaniumphthalocyanine hydrate crystal and electrophotographic photoreceptor using said crystalFUJI XEROX CO LTD·Filed 1991·Granted Mar 29, 1994·70 cites·3 claims
- 0395US6020426ACharge-transporting copolymer, method of forming charge-transporting copolymer, electrophotographic photosensitive body, and electrophotographic deviceFUJI XEROX CO LTD·Filed 1997·Granted Feb 1, 2000·83 cites·21 claims
- 0495US5358813ACrystals of chlorogallium phthalocyanine and method of preparing themFUJI XEROX CO LTD·Filed 1993·Granted Oct 25, 1994·59 cites·34 claims
- 0593US5393629AElectrophotographic photoreceptorFUJI XEROX CO LTD·Filed 1993·Granted Feb 28, 1995·55 cites·20 claims
- 0693US5378569AOxytitaniumphthalocyanine hydrate crystal and electrophotographic photoreceptor using said crystalFUJI XEROX CO LTD·Filed 1993·Granted Jan 3, 1995·38 cites·1 claims
- 0790US5252417ATitanyl phthalocyanine crystal and electrophotographic photoreceptor using the sameFUJI XEROX CO LTD·Filed 1991·Granted Oct 12, 1993·33 cites·12 claims
- 0890US3933335ACasting mold for metalsKUREHA CHEMICAL IND CO LTD·Filed 1972·Granted Jan 20, 1976·50 cites·5 claims
- 0989US4996125AElectrophotographic photoreceptor containing a fluorine lubricating agent layerFUJI XEROX CO LTD·Filed 1989·Granted Feb 26, 1991·35 cites·7 claims
- 1088US5463043AProcess for producing a dichlorotin phthalocyanine crystalFUJI XEROX CO LTD·Filed 1994·Granted Oct 31, 1995·29 cites·11 claims
- 1188US5416207ADichlorotin phthalocyanine crystal, process for producing the same, and electrophotographic photoreceptor using the sameFUJI XEROX CO LTD·Filed 1993·Granted May 16, 1995·27 cites·13 claims
- 1288US5338636ADichlorotin phthalocyanine crystal electrophotographic photoreceptor using the same, and coating composition for electrophotographic photoreceptorFUJI XEROX CO LTD·Filed 1993·Granted Aug 16, 1994·29 cites·14 claims
- 1388US5308728ADichlorotin phthalocyanine crystal, process for producing the same, and electrophotographic photoreceptor using the sameFUJI XEROX CO LTD·Filed 1992·Granted May 3, 1994·29 cites·8 claims
- 1488US5236688AMethod for activating infusibilized pitch beadsKUREHA CHEMICAL IND CO LTD·Filed 1991·Granted Aug 17, 1993·53 cites·2 claims
- 1587US5283145ACrystals of dichlorotin phthalocyanine, method of preparing the crystal, and electrophotographic photoreceptor comprising the crystalFUJI XEROX CO LTD·Filed 1992·Granted Feb 1, 1994·32 cites·17 claims
- 1686US5663327AHydroxygallium phthalocyanine crystal, process for producing the same, and electrophotographic photoreceptor containing the sameFUJI XEROX CO LTD·Filed 1995·Granted Sep 2, 1997·26 cites·4 claims
- 1785US5834149AHydroxygallium phthalocyanine crystals and electrophotographic photoreceptors using sameFUJI XEROX CO LTD·Filed 1997·Granted Nov 10, 1998·24 cites·9 claims
- 1882US5456998APhotoconductive imaging members containing alkoxy-bridged metallophthalocyanine dimersXEROX CORP·Filed 1994·Granted Oct 10, 1995·26 cites·23 claims
- 1981US6062246AMass flow controller and operating method thereofHITACHI METALS LTD·Filed 1998·Granted May 16, 2000·67 cites·18 claims
- 2081US5643703AHydroxygallium phthalocyanine crystal, process for preparing same, and electrophotographic photoreceptor comprising sameFUJI XEROX CO LTD·Filed 1995·Granted Jul 1, 1997·16 cites·1 claims
- 2181US5360475AProcess for preparing hydroxymetal phthalocyanine pigmentFUJI XEROX CO LTD·Filed 1993·Granted Nov 1, 1994·16 cites·8 claims
- 2278US5512674AProcess for preparing titanyl phthalocyanine crystal by solvent dilutionFUJI XEROX CO LTD·Filed 1993·Granted Apr 30, 1996·14 cites·6 claims
- 2377US4713413ARemoval of organic halides from hydrocarbon solventsEXXON CHEMICAL PATENTS INC·Filed 1985·Granted Dec 15, 1987·32 cites·11 claims
- 2476US6232466B1Process for preparing titanyl phthalocyanine crystal by solvent treatment of amorphous or quasi-amorphous titanyl phthalocyanineFUJI XEROX CO LTD·Filed 1991·Granted May 15, 2001·13 cites·13 claims
- 2576US5508395AHydroxygallium phthalocyanine crystal, process for preparing sameFUJI XEROX CO LTD·Filed 1994·Granted Apr 16, 1996·10 cites·7 claims
- 2675US6268096B1Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the sameFUJI XEROX CO LTD·Filed 1995·Granted Jul 31, 2001·13 cites·3 claims
- 2774US5464717AElectrophotographic photoreceptor with subbing layer and charge generating layerFUJI XEROX CO LTD·Filed 1994·Granted Nov 7, 1995·20 cites·20 claims
- 2872US5332643AMethod of wet honing a support for an electrophotographic photoreceptorFUJI XEROX CO LTD·Filed 1993·Granted Jul 26, 1994·21 cites·17 claims
- 2969US5495011AProcess for preparing hydroxygallium phthalocyanine crystal, product thereof and electrophotographic photoreceptor using the sameFUJI XEROX CO LTD·Filed 1993·Granted Feb 27, 1996·9 cites·22 claims
- 3066US5834146AElectrophotographic photoreceptor containing uniform and nonuniform charge transporting layersFUJI XEROX CO LTD·Filed 1996·Granted Nov 10, 1998·17 cites·19 claims
- 3166US5789127AElectrophotographic photoreceptorFUJI XEROX CO LTD·Filed 1996·Granted Aug 4, 1998·17 cites·6 claims
- 3264US5545733AMethod for preparing hydroxygallium phthalocyanine crystals and electrophotographic photoreceptor using the crystalsFUJI XEROX CO LTD·Filed 1994·Granted Aug 13, 1996·7 cites·14 claims
- 3364US5440029ATitanyl phthalocyanine crystalFUJI XEROX CO LTD·Filed 1993·Granted Aug 8, 1995·6 cites·2 claims
- 3464US4781994AFiber-reinforced cement material and molded article comprising hardened product thereofKUREHA CHEMICAL IND CO LTD·Filed 1987·Granted Nov 1, 1988·22 cites·6 claims
- 3563US7389078B2Fixing method, fixing apparatus using the same, and image forming apparatusFUJI XEROX CO LTD·Filed 2006·Granted Jun 17, 2008·2 cites·11 claims
- 3663US6395440B1Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus using the sameFUJI XEROX CO LTD·Filed 2000·Granted May 28, 2002·8 cites·12 claims
- 3763US5942361AElectrophotographic photosensitive member having S-type photo-induced potential decay and electrophotographic apparatusFUJI XEROX CO LTD·Filed 1997·Granted Aug 24, 1999·15 cites·30 claims
- 3859US4863708AProcess for producing carbon fibers and the carbon fibers produced by the processKUREHA CHEMICAL IND CO LTD·Filed 1989·Granted Sep 5, 1989·11 cites·9 claims
- 3958US5856471APhthalocyanine pigment for electrophotographic photoreceptorsFUJI XEROX CO LTD·Filed 1997·Granted Jan 5, 1999·5 cites·17 claims
- 4058US5141832AElectrophotographic photoreceptor with copolymerized polycarbonate resinFUJI XEROX CO LTD·Filed 1990·Granted Aug 25, 1992·11 cites·4 claims
- 4157US5110681AMelt-stable poly(arylene thioether-ketone) prepregs and molded or formed products thereofKUREHA CHEMICAL IND CO LTD·Filed 1988·Granted May 5, 1992·15 cites·23 claims
- 4255US8045909B2Surface treatment device, image forming apparatus, belt member, and image forming methodFUJI XEROX CO LTD·Filed 2006·Granted Oct 25, 2011·1 cites·23 claims
- 4355US6016417AIntermediate transfer medium, method for producing the same and image forming device using the sameFUJI XEROX CO LTD·Filed 1997·Granted Jan 18, 2000·12 cites·12 claims
- 4452US5756247AHydroxygallium phthalocyanine crystal, and electro-photographic photoreceptor containing the sameFUJI XEROX CO LTD·Filed 1997·Granted May 26, 1998·4 cites·4 claims
- 4552US4895893AHeat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereofKUREHA CHEMICAL IND CO LTD·Filed 1988·Granted Jan 23, 1990·9 cites·10 claims
- 4649US5556967AProcess for producing hydroxygallium phthalocyanineFUJI XEROX CO LTD·Filed 1994·Granted Sep 17, 1996·2 cites·5 claims
- 4747US6002901AElectrophotographic photoreceptor and electrophotographic apparatusFUJI XEROX CO LTD·Filed 1998·Granted Dec 14, 1999·9 cites·22 claims
- 4845US4948687AMulti-layered squarylium-based positive charge electrophotographic photoreceptorFUJI XEROX CO LTD·Filed 1988·Granted Aug 14, 1990·6 cites·11 claims
- 4944US4746470AProcess for the preparation of carbon fibers having structure reflected in cross sectional view thereof as random mosaicKUREHA KAGAKU KOGO KABUSHIKI K·Filed 1984·Granted May 24, 1988·6 cites·1 claims
- 5042US5622801APhthalocyanine pigment and dispersion thereof and electrophotographic photoreceptor containing the pigmentFUJI XEROX CO LTD·Filed 1995·Granted Apr 22, 1997·5 cites·19 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →