Inventor · disambiguated record
Tohru Yokozawa
Also filed as: YOKOZAWA TOHRU
16 granted patents·2 pending applications·133 citations·filing 1996–2011
92Inventor score
Top patents by PatentIndex Score
18 records- 0185US6333291B1Optically active diphosphine compound, production intermediate thereof, transition metal complex containing the compound as ligand and asymmetric hydrogenation catalyst containing the complexTAKASAGO PERFUMERY CO LTD·Filed 2000·Granted Dec 25, 2001·17 cites·7 claims
- 0282US5847222AOptically active diphosphine compound, method for making the compound, transition metal complex having the compound as ligand and method for making optically active substance by use of the complexTAKASAGO PERFUMERY CO LTD·Filed 1997·Granted Dec 8, 1998·22 cites·5 claims
- 0376US5872273AChiral diphosphine compound intermediate for preparing the same transition metal complex having the same diphosphine compound as ligand and asymmetric hydrogenation catalystTAKASAGO PERFUMERY CO LTD·Filed 1997·Granted Feb 16, 1999·34 cites·7 claims
- 0475US6492545B2Process for producing optically active alcoholTAKASAGO PERFUMERY CO LTD·Filed 2001·Granted Dec 10, 2002·12 cites·3 claims
- 0572US5693868AMethod for producing optically active diphosphine compoundsTAKASAGO PERFUMERY CO LTD·Filed 1996·Granted Dec 2, 1997·18 cites·16 claims
- 0666US8076503B2Process for production of optically active aminophosphinylbutanoic acidsMINOWA NOBUTO·Filed 2007·Granted Dec 13, 2011·2 cites·11 claims
- 0762US9079931B2Ruthenium complex and method for preparing optically active alcohol compoundNARA HIDEKI·Filed 2010·Granted Jul 14, 2015·1 cites·19 claims
- 0856US6472539B1Production process of diphosphine oxide and diphosphonateTAKASAGO PERFUMERY CO LTD·Filed 2001·Granted Oct 29, 2002·2 cites·13 claims
- 0954US6794328B2Diphosphine compound, production intermediate thereof, transition metal complex containing the compound as ligand and asymmetric hydrogenation catalyst containing the complexTAKASAGO PERFUMERY CO LTD·Filed 2003·Granted Sep 21, 2004·1 cites·7 claims
- 1053US8188307B2Method for producing an optically active tetrahydroquinolineMOROI TAKASHI·Filed 2009·Granted May 29, 2012·0 cites·1 claims
- 1153US6984738B2Process for production of optically active amino alcoholsYOKOZAWA TOHRU·Filed 2003·Granted Jan 10, 2006·2 cites·10 claims
- 1248US7312347B2Substituted optically active disphosphine compoundTAKASAGO PERFUMERY CO LTD·Filed 2006·Granted Dec 25, 2007·0 cites·25 claims
- 1348US5808162AChiral unsymmetric diphosphine compound and transition metal complex containing the same as ligandTAKASAGO PERFUMERY CO LTD·Filed 1996·Granted Sep 15, 1998·12 cites·2 claims
- 1446US7601842B2Method for producing an optically active tetrahydroquinolineTAKASAGO PERFUMERY CO LTD·Filed 2004·Granted Oct 13, 2009·0 cites·4 claims
- 1546US6313317B1Ruthenium-phosphine complex and method for producing the sameTAKASAGO PERFUMERY CO LTD·Filed 1999·Granted Nov 6, 2001·10 cites·2 claims
- 1642US8222433B2Axially asymmetric phosphorus compound and production method thereofTANAKA KEN·Filed 2011·Granted Jul 17, 2012·0 cites·6 claims
- 1740US2009227805A1Axially Asymmetric Phosphorus Compound and Production Method ThereofTANAKA KEN·Filed 2009·Application pending·0 cites
- 1834US2007142472A1Process for producing optically active 3-(4-hydroxyphenyl)proprionic acidsYOKOZAWA TOHRU·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →