Inventor · disambiguated record
Keisuke Takuma
Also filed as: TAKUMA KEISUKE
49 granted patents·2 pending applications·628 citations·filing 1985–2011
98Inventor score
Files withMITSUI TOATSU CHEMICALS26MITSUI CHEMICALS INC20FUJIYAMA TAKAHIRO1KANSAI PAINT CO LTD1MITSUI CHEMICALS1
Top patents by PatentIndex Score
51 records- 0194US5804102APlasma display filterMITSUI CHEMICALS INC·Filed 1996·Granted Sep 8, 1998·99 cites·18 claims
- 0292US6458908B1Sulfur-containing unsaturated carboxylate compound and its cured productsMITSUI CHEMICALS INC·Filed 2000·Granted Oct 1, 2002·33 cites·29 claims
- 0391US5705101ANear infrared absorber, preparation process therefor and use thereofMITSUI TOATSU CHEMICALS·Filed 1995·Granted Jan 6, 1998·45 cites·9 claims
- 0486US6080833ALow-birefringent organic optical component and a spirobiindan polymerMITSUI CHEMICALS INC·Filed 1997·Granted Jun 27, 2000·51 cites·24 claims
- 0584US5788914ANear infrared ray absorbing compound having high durability and its useMITSUI CHEMICALS INC·Filed 1996·Granted Aug 4, 1998·27 cites·12 claims
- 0684US5677398AEpoxy acrylate resins and their usesMITSUI TOATSU CHEMICALS·Filed 1996·Granted Oct 14, 1997·41 cites·19 claims
- 0783US5948593AOptical recording mediumMITSUI CHEMICALS INC·Filed 1997·Granted Sep 7, 1999·36 cites·8 claims
- 0877US5639809AAzo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Jun 17, 1997·15 cites·8 claims
- 0975US5342974AHalogenated anthraquinone and their use as near infrared rays absorbing optical filtersMITSUI TOATSU CHEMICALS·Filed 1988·Granted Aug 30, 1994·13 cites·12 claims
- 1074US6106999APhotosensitizer, visible light curable resin composition using the same, and use of the compositionMITSUI CHEMICALS·Filed 1998·Granted Aug 22, 2000·37 cites·35 claims
- 1171US8888906B2Heat-sensitive color-developing composition and heat-sensitive recording material comprising the compositionYAMAGUCHI RYOJI·Filed 2011·Granted Nov 18, 2014·1 cites·6 claims
- 1268US6130346AProcess for preparing an organic compound from an oxirane-containing compound in the presence of a tris(triaminophosphoranylideneamino)phosphine oxideMITSUI CHEMICALS INC·Filed 1999·Granted Oct 10, 2000·11 cites·17 claims
- 1368US5953857AMethod for controlling plant growthMITSUI CHEMICALS INC·Filed 1997·Granted Sep 21, 1999·27 cites·15 claims
- 1464US6320020B1Sulfur-containing (thio)ether (co)polymer and a use thereofMITSUI CHEMICALS INC·Filed 1999·Granted Nov 20, 2001·17 cites·22 claims
- 1559US6570025B1Sulfur compound and use thereofMITSUI CHEMICALS INC·Filed 2000·Granted May 27, 2003·4 cites·1 claims
- 1657US5158703AResin composition for ultraviolet luminescent screenMITSUI TOATSU CHEMICALS·Filed 1991·Granted Oct 27, 1992·14 cites·11 claims
- 1756US5182409APreparation process of bis(1,2-diaryl-1,2-ethyolenedithiolato)nickel-based complexMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jan 26, 1993·7 cites·5 claims
- 1853US5358536ADyestuff for heat-sensitive transfer record and transfer sheet containing sameMITSUI TOATSU CHEMICALS·Filed 1992·Granted Oct 25, 1994·6 cites·2 claims
- 1952US5567470AHeat-sensitive transfer sheet containing blue dyestuffMITSUI TOATSU CHEMICALS·Filed 1995·Granted Oct 22, 1996·4 cites·8 claims
- 2050US5359075AQuinophthalone compoundMITSUI TOATSU CHEMICALS·Filed 1992·Granted Oct 25, 1994·4 cites·19 claims
- 2149US6297332B1Epoxy-resin composition and use thereofMITSUI CHEMICALS INC·Filed 1999·Granted Oct 2, 2001·9 cites·17 claims
- 2248US6028161APolycarbonate copolymer and applications thereofMITSUI CHEMICALS INC·Filed 1998·Granted Feb 22, 2000·9 cites·16 claims
- 2347US5045434AVisible radiation sensitive composition containing substituted 3-(benzothiazo-2-yl)-7-diethylaminocoumarin as sensitizersKANSAI PAINT CO LTD·Filed 1990·Granted Sep 3, 1991·12 cites·16 claims
- 2446US6162520AOptical recording medium and dipyrromethene metal chelate compound for use thereinMITSUI CHEMICALS INC·Filed 1998·Granted Dec 19, 2000·6 cites·29 claims
- 2546US5698682AAzo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1997·Granted Dec 16, 1997·3 cites·4 claims
- 2645US5168093ASublimation thermaltransfer printing sheet comprising novel magenta dyestuffsMITSUI TOATSU CHEMICALS·Filed 1990·Granted Dec 1, 1992·4 cites·9 claims
- 2745US4954410AColor toner compositionMITSUI TOATSU CHEMICALS·Filed 1989·Granted Sep 4, 1990·6 cites·15 claims
- 2844US5672462AOptical recording mediumMITSUI TOATSU CHEMICALS·Filed 1996·Granted Sep 30, 1997·6 cites·8 claims
- 2944US4734218ADichroic azo dyestuffs and liquid crystal composition containing said dyestuffsMITSUI TOATSU CHEMICALS·Filed 1985·Granted Mar 29, 1988·8 cites·17 claims
- 3043US5990261AOrganic optical componentMITSUI CHEMICALS INC·Filed 1997·Granted Nov 23, 1999·6 cites·1 claims
- 3142US5630849ADyeing methodMITSUI TOATSU CHEMICALS·Filed 1996·Granted May 20, 1997·5 cites·12 claims
- 3242US5002925AIsopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate, cyan composition for sublimation transfer record and cyan composition for color toner containing itMITSUI TOATSU CHEMICALS·Filed 1989·Granted Mar 26, 1991·2 cites·7 claims
- 3341US6355327B1Optical recording medium and dipyrromethene metal chelate compound for use thereinMITSUI CHEMICALS INC·Filed 2000·Granted Mar 12, 2002·0 cites·7 claims
- 3441US5658707AOptical recording mediaMITSUI TOATSU CHEMICALS·Filed 1995·Granted Aug 19, 1997·10 cites·7 claims
- 3541US5248784A4-carbonyl-substituted coumarin compoundMITSUI TOATSU CHEMICALS·Filed 1992·Granted Sep 28, 1993·2 cites·7 claims
- 3638US5868968APolyimide resin compositions for optical filtersMITSUI CHEMICALS INC·Filed 1997·Granted Feb 9, 1999·5 cites·5 claims
- 3738US5387686ADye for heat-sensitive transfer record and ink composition for heat-sensitive transfer recordMITSUI TOATSU CHEMICALS·Filed 1993·Granted Feb 7, 1995·5 cites·9 claims
- 3837US5916488APolyimide resin compositions for optical filtersMITSUI CHEMICALS INC·Filed 1998·Granted Jun 29, 1999·5 cites·4 claims
- 3937US5300475ASublimation thermal transfer printing sheet comprising novel magenta dyestuffsMITSUI TOATSU CHEMICALS·Filed 1992·Granted Apr 5, 1994·6 cites·3 claims
- 4036US2004039080A1Dental material and compositionFiled 2001·Application pending·0 cites
- 4135US6482916B1Dyed molded articleMITSUI CHEMICALS INC·Filed 1999·Granted Nov 19, 2002·4 cites·12 claims
- 4235US6060606ADipyrromethene metal chelate compoundsMITSUI CHEMICALS INC·Filed 1999·Granted May 9, 2000·4 cites·2 claims
- 4335US5945503APolymaleimide resin composition and laminate plate for semiconductor substrate using itMITSUI CHEMICALS INC·Filed 1997·Granted Aug 31, 1999·7 cites·15 claims
- 4434US5693396APhthalocyanine compounds and optical recording media comprising themMITSUI TOATSU CHEMICALS·Filed 1996·Granted Dec 2, 1997·4 cites·10 claims
- 4534US4883611ADichroic coloring agents for liquid crystal displaysMITSUI TOATSU CHEMICALS·Filed 1988·Granted Nov 28, 1989·2 cites·12 claims
- 4633US6310147B1Epoxy-resin composition and use thereofMITSUI CHEMICALS INC·Filed 1999·Granted Oct 30, 2001·3 cites·16 claims
- 4732US5302573ATransfer sheet for sublimation recordingMITSUI TOATSU CHEMICALS·Filed 1992·Granted Apr 12, 1994·3 cites·10 claims
- 4832US2003085387A1Optical materials and optical part each containing aromatic sulfide compound and aromatic sulfide compoundFUJIYAMA TAKAHIRO·Filed 2001·Application pending·0 cites
- 4930US5296445ADye for heat-sensitive transfer record, ink composition for heat-sensitive transfer record, and transfer sheetMITSUI TOATSU CHEMICALS·Filed 1992·Granted Mar 22, 1994·0 cites·9 claims
- 5030US5182395AIsopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylateMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jan 26, 1993·0 cites·1 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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