Inventor · disambiguated record
Yoshimasa Matsushima
Also filed as: MATSUSHIMA YOSHIMASA
23 granted patents·5 pending applications·462 citations·filing 1991–2019
96Inventor score
Files withTAKASAGO PERFUMERY CO LTD23NAKAYAMA YUJI2ITOH HISANORI1MATSUSHIMA YOSHIMASA1SEMICONDUCTOR ENERGY LAB1
Top patents by PatentIndex Score
28 records- 0196US7442797B2Platinum complex and light emitting deviceTAKASAGO PERFUMERY CO LTD·Filed 2004·Granted Oct 28, 2008·162 cites·16 claims
- 0295US5942615APhenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1997·Granted Aug 24, 1999·73 cites·1 claims
- 0392US6083651APhenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1998·Granted Jul 4, 2000·54 cites·3 claims
- 0484US5567560ATriphenylamine derivative charge-transporting material containing electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1995·Granted Oct 22, 1996·23 cites·9 claims
- 0582US5989765ATriphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1999·Granted Nov 23, 1999·24 cites·6 claims
- 0677US5573878ATriphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1994·Granted Nov 12, 1996·12 cites·8 claims
- 0776US6172264B1Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1999·Granted Jan 9, 2001·19 cites·8 claims
- 0871US5486441AElectrophotographic photoreceptor containing 1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivativeTAKASAGO PERFUMERY CO LTD·Filed 1995·Granted Jan 23, 1996·10 cites·1 claims
- 0967US5910610ATriphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1996·Granted Jun 8, 1999·13 cites·4 claims
- 1066US5736284ACarbazole derivative charge transporting material using the same and electrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1997·Granted Apr 7, 1998·10 cites·3 claims
- 1164US6150065AElectrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1999·Granted Nov 21, 2000·16 cites·4 claims
- 1261US5882813AElectrophotographic photoreceptorTAKASAGO PERFUMERY CO LTD·Filed 1997·Granted Mar 16, 1999·15 cites·2 claims
- 1357US5229238AElectrophotographic photoreceptor comprising a benzodithiafulvene derivative charge transport materialTAKASAGO PERFUMERY CO LTD·Filed 1991·Granted Jul 20, 1993·11 cites·3 claims
- 1455US11185851B2Polymer-supported metalTAKASAGO PERFUMERY CO LTD·Filed 2017·Granted Nov 30, 2021·0 cites·2 claims
- 1555US6228547B1Bis(3,4-methylenedioxyphenylamino) derivatives and electrophotographic photoreceptor containing the derivativesTAKASAGO PERFUMERY CO LTD·Filed 1999·Granted May 8, 2001·11 cites·6 claims
- 1653US11377415B2Method for converting N,N-dialkylamide compound into ester compound using complex of fourth-period transition metal as catalystTAKASAGO PERFUMERY CO LTD·Filed 2019·Granted Jul 5, 2022·0 cites·3 claims
- 1750US9611279B2Zinc complexTAKASAGO PERFUMERY CO LTD·Filed 2014·Granted Apr 4, 2017·0 cites·16 claims
- 1844US8552204B2Zinc clusterMATSUSHIMA YOSHIMASA·Filed 2010·Granted Oct 8, 2013·0 cites·4 claims
- 1944US2008036373A1Platinum complex and light-emitting deviceTAKASAGO PERFUMERY CO LTD·Filed 2007·Application pending·0 cites
- 2041US2006202197A1Platinum complex and light-emitting deviceTAKASAGO PERFUMERY CO LTD·Filed 2006·Application pending·0 cites
- 2140US5463128A1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivative and electrophotographic photoreceptor using the sameTAKASAGO PERFUMERY CO LTD·Filed 1994·Granted Oct 31, 1995·1 cites·2 claims
- 2239US2006264625A1Platinum complexNAKAYAMA YUJI·Filed 2004·Application pending·0 cites
- 2338US2006094875A1Platinum complexesITOH HISANORI·Filed 2003·Application pending·0 cites
- 2436US2006210828A1Light-emitting deviceNAKAYAMA YUJI·Filed 2004·Application pending·0 cites
- 2535US5521042A1,4-bis(2',2'-diphenylvinyl)benzene derivative and charge transporting material and electrophotographic photoreceptor using the sameTAKASAGO PERFUMERY CO LTD·Filed 1994·Granted May 28, 1996·2 cites·6 claims
- 2634US5475517AFerroelectric liquid crystal device with angles between smectic layers and the direction normal to the substrates are 5-15 degreesSEMICONDUCTOR ENERGY LAB·Filed 1993·Granted Dec 12, 1995·4 cites·16 claims
- 2731US6093345AOptically active compound, liquid crystal composition containing the same, and liquid crystal electro-optic element using the sameTAKASAGO PERFUMERY CO LTD·Filed 1993·Granted Jul 25, 2000·2 cites·3 claims
- 2831US5750785A1,4-bis(2', 2'-diphenylvinyl)benzene derivative and charge transporting material and electrophotographic photoreceptor using the sameTAKASAGO PERFUMERY CO LTD·Filed 1996·Granted May 12, 1998·0 cites·12 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →