Inventor · disambiguated record
Masakatsu Shibasaki
Also filed as: SHIBASAKI MASAKATSU
40 granted patents·4 pending applications·171 citations·filing 1984–2018
97Inventor score
Top patents by PatentIndex Score
44 records- 0197US7205425B2Optically active nitro alcohol derivatives, optically active amino alcohol derivatives, and process for producing thereofCHISSO CORP·Filed 2005·Granted Apr 17, 2007·40 cites·2 claims
- 0283US4837342AProstacyclin analogue, and blood circulation improving agent and anti-ulcer composition containing it as active ingredientSAGAMI CHEM RES·Filed 1987·Granted Jun 6, 1989·26 cites·4 claims
- 0369US5616726AOptically active aminoalcohol derivatives and method of producing sameKANEKA CORP·Filed 1994·Granted Apr 1, 1997·8 cites·24 claims
- 0465US8981123B2Compound and asymmetric synthesis reactionMICROBIAL CHEM RES FOUND·Filed 2014·Granted Mar 17, 2015·0 cites·1 claims
- 0565US4644068ABicyclo[3.3.0]octenylaldehyde derivativesSAGAMI CHEM RES·Filed 1984·Granted Feb 17, 1987·5 cites·2 claims
- 0662US6632955B1Optically active nitro alcohol derivatives, optically active amino alcohol derivatives, and process for preparing the sameCHISSO CORP·Filed 1997·Granted Oct 14, 2003·6 cites·1 claims
- 0760US6833442B2Complex and method for producing epoxides by using the complexUNIV TOKYO·Filed 2002·Granted Dec 21, 2004·19 cites·6 claims
- 0858US10413892B2Catalyst, production method therefor, and method for producing optically active anti-1, 2-nitroalkanol compoundMICROBIAL CHEM RES FOUND·Filed 2016·Granted Sep 17, 2019·0 cites·10 claims
- 0958US4681951ABicyclo(3.3.0)octene derivativesSAGAMI CHEM RES·Filed 1984·Granted Jul 21, 1987·4 cites·1 claims
- 1056US5880301AOptically active bidentate phosphine ligand palladium complexNISSAN CHEMICAL IND LTD·Filed 1996·Granted Mar 9, 1999·18 cites·18 claims
- 1156US2007060656A1Optically active nitro alcohol derivatives, optically active amino alcohol derivatives, and process for producing thereofSHIBASAKI MASAKATSU·Filed 2006·Application pending·0 cites
- 1255US8940919B2Compound, method for producing the same, and method for producing oseltamivir phosphateMICROBIAL CHEM RES FOUND·Filed 2013·Granted Jan 27, 2015·0 cites·3 claims
- 1355USRE36718EOptically active aminoalcohol derivatives and method of producing sameKANEKA CORP·Filed 1994·Granted May 30, 2000·4 cites·24 claims
- 1454US9187498B2Compound and asymmetric synthesis reactionMICROBIAL CHEM RES FOUND·Filed 2015·Granted Nov 17, 2015·0 cites·1 claims
- 1553US9901913B2Catalyst and method for producing optically active anti-1,2-nitroalkanol compoundMICROBIAL CHEM RES FOUND·Filed 2014·Granted Feb 27, 2018·0 cites·12 claims
- 1652US6677461B2Ligands and asymmetric catalysts made by using the sameJAPAN GOVERNMENT·Filed 2001·Granted Jan 13, 2004·2 cites·9 claims
- 1751US10974232B2Catalyst, method for forming amide bond, and method for producing amide compoundMICROBIAL CHEM RES FOUND·Filed 2018·Granted Apr 13, 2021·0 cites·4 claims
- 1850US4774341ABicyclo(3.3.0)octane derivative and preparation thereofSAGAMI CHEM RES·Filed 1986·Granted Sep 27, 1988·3 cites·5 claims
- 1949US4810805A(2-chloro-3-oxo-1-alkenyl)bicyclo(3.3.0)octane derivativeMITSUBISHI CHEM IND·Filed 1986·Granted Mar 7, 1989·4 cites·1 claims
- 2048US2010298559A1Optically active dinickel complex and method for producing optically active amine using the optically active dinickel complex as catalystNISSAN CHEMICAL IND LTD·Filed 2008·Application pending·0 cites
- 2147US7820862B2Ligand, method for producing the same, and catalyst using the ligandUNIV TOKYO·Filed 2007·Granted Oct 26, 2010·0 cites·28 claims
- 2247US4699921APharmaceuticals containing prostaglandin I2MITSUBISHI YUKA PHARMA·Filed 1985·Granted Oct 13, 1987·5 cites·7 claims
- 2347US2002193447A1Optically active nitro alcohol derivatives, optically active amino alcohol derivatives, and process for producing thereofFiled 2002·Application pending·0 cites
- 2445US6248918B1Optically active binaphthyl compound and method for producing an optically active cyanohydrin compound employing the binaphthyl compoundNISSAN CHEMICAL IND LTD·Filed 1999·Granted Jun 19, 2001·4 cites·12 claims
- 2545US4762936ABicyclo(3.3.0)Octene derivativesSAGAMI CHEM RES·Filed 1986·Granted Aug 9, 1988·2 cites·3 claims
- 2644US8785690B2Thioamide compound, method for producing thioamide compound, method for producing [(4R,6R)-6-aminoethyl-1,3-dioxan-4-yl]acetate derivative, and method for producing atorvastatinMICROBIAL CHEM RES FOUND·Filed 2013·Granted Jul 22, 2014·0 cites·5 claims
- 2743US9493492B2Compound, manufacturing method therefor, and method for manufacturing optically active α-aminophosphonate derivativeMICROBIAL CHEM RES FOUND·Filed 2013·Granted Nov 15, 2016·0 cites·6 claims
- 2843US7563916B2Process for producing an alcohol or a silyl ether thereofTAKASAGO PERFUMERY CO LTD·Filed 2006·Granted Jul 21, 2009·0 cites·2 claims
- 2943US6809059B2CatalystJOHNSON MATTHEY PLC·Filed 2001·Granted Oct 26, 2004·0 cites·3 claims
- 3041US9951067B2Optically active α-trifluoromethyl-β-amino acid derivative production methodMICROBIAL CHEM RES FOUND·Filed 2015·Granted Apr 24, 2018·0 cites·7 claims
- 3141US7371578B2Method of evaluating the catalytic activity of a rare earth alkoxideKABUSHIKIKAISHA KOJUNDOKAGAKU·Filed 2003·Granted May 13, 2008·0 cites·3 claims
- 3241US7355061B2Method of manufacturing cyano compoundsTAKASAGO PERFUMERY CO LTD·Filed 2004·Granted Apr 8, 2008·0 cites·8 claims
- 3340US5336653ACatalyst for asymmetric synthesisCHISSO CORP·Filed 1992·Granted Aug 9, 1994·7 cites·23 claims
- 3438US6084123AProcess for the preparation of optically active 1-aminophosphonic acid derivatives and novel phosphonate compoundsHOKKO CHEM IND CO·Filed 1996·Granted Jul 4, 2000·2 cites·3 claims
- 3538US2004006243A1Method of producing oxybutynin and its derivativesUNIV TOKYO·Filed 2003·Application pending·0 cites
- 3636US5847186AProcess for preparing asymmetric compound by using metal complexNAGASE & CO LTD·Filed 1996·Granted Dec 8, 1998·4 cites·17 claims
- 3736US4709064Aβ-N-substituted aminothiol ester and process for preparing the sameSAGAMI CHEM RES·Filed 1986·Granted Nov 24, 1987·1 cites·2 claims
- 3836US4632997AMethod for preparing cis-bicyclo[3.3.0]octylidene derivativeSAGAMI CHEM RES·Filed 1985·Granted Dec 30, 1986·1 cites·9 claims
- 3933US4728746Aβ-aminothiol ester and process for preparing thereofSAGAMI CHEM RES·Filed 1985·Granted Mar 1, 1988·1 cites·3 claims
- 4032US4777271AIsocarbacyclin derivatives and process for production thereofSAGAMI CHEM RES·Filed 1986·Granted Oct 11, 1988·0 cites·1 claims
- 4131US5081238Aβmethyl azetidinone derivatives and stereoselective process for preparing the sameSAGAMI CHEM RES·Filed 1990·Granted Jan 14, 1992·2 cites·12 claims
- 4230US5117037ACis-bicyclo[4,3.0]non-2-end derivativesSAGAMI CHEM RES·Filed 1990·Granted May 26, 1992·1 cites·2 claims
- 4329US5053526APharmaceuticals containing prostaglandin I2MITSUBISHI CHEM IND·Filed 1990·Granted Oct 1, 1991·1 cites·4 claims
- 4425US6090969AProcess for the preparation of an asymmetric compound using a metal complexNAGASE AND CO LTD·Filed 1998·Granted Jul 18, 2000·1 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Masakatsu Shibasaki files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →