Inventor · disambiguated record
Hidemasa Takaya
Also filed as: TAKAYA HIDEMASA
20 granted patents·340 citations·filing 1987–1996
96Inventor score
Files withTAKASAGO PERFUMERY CO LTD20
Top patents by PatentIndex Score
20 records- 0194US4739084ARuthenium-phosphine complexTAKASAGO PERFUMERY CO LTD·Filed 1987·Granted Apr 19, 1988·45 cites·5 claims
- 0289US4994590ARuthenium-phoshine complexTAKASAGO PERFUMERY CO LTD·Filed 1989·Granted Feb 19, 1991·27 cites·2 claims
- 0386US4962230AProcess for producing optically active carboxylic acidTAKASAGO PERFUMERY CO LTD·Filed 1987·Granted Oct 9, 1990·25 cites·7 claims
- 0486US4851537AProcess for preparing N-acyltetrahydroisoquinolineTAKASAGO PERFUMERY CO LTD·Filed 1987·Granted Jul 25, 1989·22 cites·6 claims
- 0584US4739085ARuthenium-phosphine complexTAKASAGO PERFUMERY CO LTD·Filed 1987·Granted Apr 19, 1988·22 cites·1 claims
- 0683US5021593ARuthenium-optically active phosphine complexTAKASAGO PERFUMERY CO LTD·Filed 1990·Granted Jun 4, 1991·18 cites·6 claims
- 0782US4933482AProcess for preparing optically active alcoholTAKASAGO PERFUMERY CO LTD·Filed 1988·Granted Jun 12, 1990·18 cites·2 claims
- 0881US5530150APhosphine compound, complex containing the phosphine compound as ligand, process for producing optically active aldehyde using the phosphine compound or the complex, and 4-[(R)-1'-formylethyl]azetidin-2-one derivativesTAKASAGO PERFUMERY CO LTD·Filed 1994·Granted Jun 25, 1996·23 cites·11 claims
- 0981US4962242AProcess for producing optically active alcoholsTAKASAGO PERFUMERY CO LTD·Filed 1987·Granted Oct 9, 1990·17 cites·5 claims
- 1079US5066815AProcess for preparing optically active alcoholTAKASAGO PERFUMERY CO LTD·Filed 1990·Granted Nov 19, 1991·20 cites·2 claims
- 1174US4916252AProcess for preparing optically active alcoholTAKASAGO PERFUMERY CO LTD·Filed 1988·Granted Apr 10, 1990·21 cites·3 claims
- 1271US5631345AProcess for producing optically active polyketoneTAKASAGO PERFUMERY CO LTD·Filed 1996·Granted May 20, 1997·25 cites·4 claims
- 1368US5412109AProcess for preparing optically active 4-methyl-2-oxetanoneTAKASAGO PERFUMERY CO LTD·Filed 1993·Granted May 2, 1995·10 cites·6 claims
- 1468US5159093AIridium-optically active phosphine complex and process for producing optically active alcohols using the sameTAKASAGO PERFUMERY CO LTD·Filed 1991·Granted Oct 27, 1992·12 cites·2 claims
- 1565US5306834AProcess for preparing optically active 4-methyl-2-oxetanoneTAKASAGO PERFUMERY CO LTD·Filed 1993·Granted Apr 26, 1994·8 cites·7 claims
- 1654US5087728AProcess for producing carboxylic acids and esters thereofTAKASAGO PERFUMERY CO LTD·Filed 1990·Granted Feb 11, 1992·4 cites·8 claims
- 1749US5563295AProcess for producing optically active carboxylic acidTAKASAGO PERFUMERY CO LTD·Filed 1995·Granted Oct 8, 1996·8 cites·5 claims
- 1848US5648548AOptically active asymmetric diphosphine and process for producing optically active substance in its presenceTAKASAGO PERFUMERY CO LTD·Filed 1996·Granted Jul 15, 1997·13 cites·3 claims
- 1935US5210332AIridium-optically active phosphine complex and process for producing optically active alcohols using the sameTAKASAGO PERFUMERY CO LTD·Filed 1992·Granted May 11, 1993·1 cites·8 claims
- 2031US5556998ATransition metal complex, process for the preparation of the same, and asymmetric hydrogenation catalyst comprising the sameTAKASAGO PERFUMERY CO LTD·Filed 1995·Granted Sep 17, 1996·1 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →