Inventor · disambiguated record
Masayoshi Minai
Also filed as: MINAI MASAYOSHI
69 granted patents·2 pending applications·386 citations·filing 1973–2007
99Inventor score
Top patents by PatentIndex Score
71 records- 0188US6849202B2Compound having phenylacetylene structure, liquid crystal composition, polymer, optically anisotropic product, optical or liquid crystal element, dibenzothiophene compound, intermediate, and process for producing the sameSUMITOMO CHEMICAL CO·Filed 2002·Granted Feb 1, 2005·15 cites·7 claims
- 0285US6623810B2Phenylacetylene compound, liquid crystal composition, and liquid crystal element produced with the sameSUMITOMO CHEMICAL CO·Filed 2001·Granted Sep 23, 2003·15 cites·8 claims
- 0383US4335263AProcess for preparing aromatic aldehydesSUMITOMO CHEMICAL CO·Filed 1980·Granted Jun 15, 1982·17 cites·15 claims
- 0482US6149837APhenylacetylene compound and liquid crystal composition comprising the sameSUMITOMO CHEMICAL CO·Filed 1999·Granted Nov 21, 2000·55 cites·14 claims
- 0581US6277998B1Production process and intermediate of tetrazole compoundSUMITOMO CHEMICAL CO·Filed 2000·Granted Aug 21, 2001·9 cites·7 claims
- 0680US5235068AProcess for producing acylaromatic compoundsSUMITOMO CHEMICAL CO·Filed 1992·Granted Aug 10, 1993·25 cites·26 claims
- 0778US5874593AProduction process and intermediate of tetrazole compoundSUMITOMO CHEMICAL CO·Filed 1995·Granted Feb 23, 1999·15 cites·11 claims
- 0876US7135579B2Dibenzothiophene oxide compound, and process for producing the sameSUMITOMO CHEMICAL CO·Filed 2004·Granted Nov 14, 2006·5 cites·9 claims
- 0974US5658489ADiphenylacetylene compound, process for preparing the same and liquid crystal composition and element comprising the sameSUMITOMO CHEMICAL CO·Filed 1994·Granted Aug 19, 1997·13 cites·20 claims
- 1074US4665174AProduction of cyclopentenone derivativesSUMITOMO CHEMICAL CO·Filed 1982·Granted May 12, 1987·16 cites·9 claims
- 1173US4008265ANovel bisphenoxy carboxylic acid derivatives and their saltsSUMITOMO CHEMICAL CO·Filed 1974·Granted Feb 15, 1977·8 cites·5 claims
- 1268US6191289B1Production process and intermediate of tetrazole compoundSUMITOMO CHEMICAL CO·Filed 1998·Granted Feb 20, 2001·10 cites·10 claims
- 1366US4082913APhenoxyalicyclic carboxylic acid derivativesSUMITOMO CHEMICAL CO·Filed 1973·Granted Apr 4, 1978·6 cites·1 claims
- 1464US4970345AProcess for preparing oxocyclopentene derivativesSUMITOMO CHEMICAL CO·Filed 1986·Granted Nov 13, 1990·7 cites·1 claims
- 1563US6673267B2Phenylacetylene compound, liquid crystal composition, polymer, optically anisotropic product, and liquid crystal or optical elementSUMITOMO CHEMICAL CO·Filed 2000·Granted Jan 6, 2004·7 cites·13 claims
- 1663US4511655AProcess for producing 4-cyclopentenonesSUMITOMO CHEMICAL CO·Filed 1982·Granted Apr 16, 1985·6 cites·11 claims
- 1760US4957867AProduction of cyclopentenones by enzyme resolutionSUMITOMO CHEMICAL CO·Filed 1987·Granted Sep 18, 1990·10 cites·37 claims
- 1859US4496767AProcess for preparing 2-cyclopentenone derivativesSUMITOMO CHEMICAL CO·Filed 1983·Granted Jan 29, 1985·5 cites·13 claims
- 1958US5779934AFluorine-containing optically active compound, process for preparing the same and liquid crystal mixture and liquid crystal element comprising the sameSUMITOMO CHEMICAL CO·Filed 1995·Granted Jul 14, 1998·7 cites·15 claims
- 2056US2008139824A1Dibenzothiophene oxide compound, and process for producing the sameSEKINE CHIZU·Filed 2007·Application pending·0 cites
- 2155US5238598AOptically active aromatic compounds, preparation process thereof, and liquid crystal compositions and elementsSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 24, 1993·5 cites·8 claims
- 2255US5002693ANovel optically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elementsSUMITOMO CHEMICAL CO·Filed 1988·Granted Mar 26, 1991·5 cites·13 claims
- 2354US6246452B1Liquid crystal, liquid crystal mixture having Tau-V min mode driving with negative or zero temperature dependencySUMITOMO CHEMICAL CO·Filed 1995·Granted Jun 12, 2001·14 cites·20 claims
- 2454US5707547ATrans-olefin compounds, method for production thereof, liquid crystal composition containing the same as active ingredient, and liquid crystal element using said compositionSUMITOMO CHEMICAL CO·Filed 1994·Granted Jan 13, 1998·10 cites·3 claims
- 2554US5268501AProcess for preparing haloketo acid derivativesSUMITOMO CHEMICAL CO·Filed 1992·Granted Dec 7, 1993·5 cites·3 claims
- 2654US4542235AMethod for producing an optically active 2,2-dimethylcyclopropanecarboxylic acidSUMITOMO CHEMICAL CO·Filed 1983·Granted Sep 17, 1985·4 cites·7 claims
- 2754US2007057229A1Compound having phenylacetylene structure, liquid crystal composition, polymer, optically anisotropic product, optical or liquid crystal element, dibenzothiophene compound, intermediate, and process for producing the sameSEKINE CHIZU·Filed 2006·Application pending·0 cites
- 2852US6030546ATrans-olefin compounds, method for production thereof, liquid crystal composition containing the same as active ingredient, and liquid crystal element using said compositionSUMITOMO CHEMICAL CO·Filed 1997·Granted Feb 29, 2000·4 cites·14 claims
- 2952US4812585AProcess for producing 2-aceylfuran derivativesSUMITOMO CHEMICAL CO·Filed 1987·Granted Mar 14, 1989·4 cites·22 claims
- 3050US4729953AOptically active 4-hydroxy-2-cyclopentenones, and their productionSUMITOMO CHEMICAL CO·Filed 1984·Granted Mar 8, 1988·3 cites·27 claims
- 3149US5659051AProcess of producing 2-cyano-4-oxo-4H-benzopyran compoundsSUMITOMO CHEMICAL CO·Filed 1994·Granted Aug 19, 1997·4 cites·13 claims
- 3249US5151542AProcess for preparing di-tert.-butyl dicarbonateSUMITOMO CHEMICAL CO·Filed 1991·Granted Sep 29, 1992·3 cites·12 claims
- 3348US5202467AProcess for preparing haloketo acid derivativesSUMITOMO CHEMICAL CO·Filed 1991·Granted Apr 13, 1993·4 cites·26 claims
- 3448US5013479AOptically active ether derivatives, preparation process therefor, liquid crystal materials and an optical switching elementSUMITOMO CHEMICAL CO·Filed 1990·Granted May 7, 1991·8 cites·9 claims
- 3547US5447659AOptically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elementsSUMITOMO CHEMICAL CO·Filed 1994·Granted Sep 5, 1995·2 cites·16 claims
- 3645US4535182AProcess for preparing 2-cyclopentenone estersSUMITOMO CHEMICAL CO·Filed 1983·Granted Aug 13, 1985·2 cites·9 claims
- 3744US5191109AProcess for preparing optically active cyclopentenonesSUMITOMO CHEMICAL CO·Filed 1991·Granted Mar 2, 1993·4 cites·11 claims
- 3844US3970694ACycloalkyl phenoxy carboxylic acid derivativesSUMITOMO CHEMICAL CO·Filed 1974·Granted Jul 20, 1976·7 cites·5 claims
- 3943US5498721AProcess for producing thiophene derivativesSUMITOMO CHEMICAL CO·Filed 1994·Granted Mar 12, 1996·2 cites·24 claims
- 4043US5389293AOptically active benzene derivatives, process for producing the same and liquid-crystalline composition containing said derivatives as liquid-crystalline compound and light switching elementsSUMITOMO CHEMICAL CO·Filed 1992·Granted Feb 14, 1995·2 cites·16 claims
- 4143US4092324ADiheterocyclic esters of 4-(1,1-bis-(phenoxy-propionic or -butoyric acid)-cyclohexane)α-methyl substitutedSUMITOMO CHEMICAL CO·Filed 1976·Granted May 30, 1978·1 cites·4 claims
- 4242US5523437ATertiary phosphine compound and transition metal complex comprising the same as ligandSUMITOMO CHEMICAL CO·Filed 1994·Granted Jun 4, 1996·8 cites·17 claims
- 4340US5621129AOptically active tertiary phosphine compound, transition metal complex comprising the same as ligand and process for preparing optically active organic silicon compound using said transition metal complexSUMITOMO CHEMICAL CO·Filed 1996·Granted Apr 15, 1997·7 cites·5 claims
- 4440US5338484AOptically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elementsSUMITOMO CHEMICAL CO·Filed 1993·Granted Aug 16, 1994·1 cites·1 claims
- 4539US5662828ACompound having unsaturated side chain, process for preparing the same, liquid crystalline polymer prepared from the same, liquid crystal mixture and display elementSUMITOMO CHEMICAL CO·Filed 1995·Granted Sep 2, 1997·5 cites·12 claims
- 4638US5637736AProcess for preparing 1-bromoalkylbenzene derivatives and intermediates thereofSUMITOMO CHEMICAL CO·Filed 1994·Granted Jun 10, 1997·1 cites·8 claims
- 4738US5332675AOptically active aromatic carboxylic acid derivatives and process for producing the sameSUMITOMO CHEMICAL CO·Filed 1992·Granted Jul 26, 1994·1 cites·8 claims
- 4838US5124070AOptically active ester derivatives, preparation process thereof, liquid crystal materials and a light switching elementSUMITOMO CHEMICAL CO·Filed 1989·Granted Jun 23, 1992·1 cites·13 claims
- 4938US4985590AOptically active benzene derivatives and process for preparation thereofSUMITOMO CHEMICAL CO·Filed 1988·Granted Jan 15, 1991·3 cites·39 claims
- 5037US5041620AMethod for producing optically active 2-cyclopenten-4-one-1-ol esters, 2-cyclopenteno-4-one-1-ol ester and complexes thereof with optically active 1,6-diphenyl-2,4-hexadiyne-1,6-diolSUMITOMO CHEMICAL CO·Filed 1986·Granted Aug 20, 1991·1 cites·43 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →