Inventor · disambiguated record
Takehisa Ohashi
Also filed as: OHASHI TAKEHISA
24 granted patents·234 citations·filing 1978–1995
96Inventor score
Top patents by PatentIndex Score
24 records- 0194US4595752AProcess for preparing 5,6,7,8-tetrahydro-6-(L-erythro-1',2'-dihydroxypropyl)pterinKANEGAFUCHI CHEMICAL IND·Filed 1985·Granted Jun 17, 1986·52 cites·17 claims
- 0280US4649197ASulfate of 5,6,7,8-tetrahydro-L-erythro-biopterin and process for preparing the sameKANEGAFUCHI CHEMICAL IND·Filed 1985·Granted Mar 10, 1987·30 cites·10 claims
- 0379US4925969AProcess for preparing ethyl-alpha-amino-gamma-oxo-gamma-phenybutyrate derivativesKANEGAFUCHI CHEMICAL IND·Filed 1989·Granted May 15, 1990·15 cites·14 claims
- 0479US4230869AProcess for preparing 5-(4-hydroxyphenyl)hydantoinKANEGAFUCHI CHEMICAL IND·Filed 1978·Granted Oct 28, 1980·11 cites·5 claims
- 0576US4371699AProcess for preparation of optically active N-mercaptoalkanoylamino acidsKANEGAFUCHI CHEMICAL IND·Filed 1980·Granted Feb 1, 1983·10 cites·17 claims
- 0671US4898822AProcess for preparing optically active indoline-2-carboxylic acidKANEGAFUCHI CHEMICAL IND·Filed 1986·Granted Feb 6, 1990·34 cites·9 claims
- 0769US5616726AOptically active aminoalcohol derivatives and method of producing sameKANEKA CORP·Filed 1994·Granted Apr 1, 1997·8 cites·24 claims
- 0861US4814506AProcess for preparing 3 halogeno-2-hydroxypropyltrimethylammonium halideKANEGAFUCHI CHEMICAL IND·Filed 1987·Granted Mar 21, 1989·7 cites·4 claims
- 0958US4716235AProcess for preparing N-[1(S)-ethoxycarbonyl-3-phenylpropyl]-L-alanyl-L-prolineKANEGAFUCHI CHEMICAL IND·Filed 1986·Granted Dec 29, 1987·12 cites·6 claims
- 1057US4745066AMethod for producing optically active glycol derivativesKANEGAFUCHI CHEMICAL IND·Filed 1986·Granted May 17, 1988·8 cites·10 claims
- 1156US4384139AProcess for preparation of an optically active β-mercaptoalkanoic acidKANEGAFUCHI CHEMICAL IND·Filed 1981·Granted May 17, 1983·5 cites·18 claims
- 1255USRE36718EOptically active aminoalcohol derivatives and method of producing sameKANEKA CORP·Filed 1994·Granted May 30, 2000·4 cites·24 claims
- 1354US4272517APermanent waving compositionsKANEGAFUCHI CHEMICAL IND·Filed 1979·Granted Jun 9, 1981·15 cites·7 claims
- 1452US4791198ABeta-lactam compound and preparation thereofKANEGAFUCHI CHEMICAL IND·Filed 1987·Granted Dec 13, 1988·3 cites·3 claims
- 1551US5962279AProcess for producing D-amino acids with composite immobilized enzyme preparationKANEGAFUCHI CHEMICAL IND·Filed 1995·Granted Oct 5, 1999·5 cites·12 claims
- 1645US5003083AProcess for preparing optically active cyano compoundKANEGAFUCHI CHEMICAL IND·Filed 1987·Granted Mar 26, 1991·2 cites·7 claims
- 1745US4861877AProcess for preparing 4-acetoxy-3-hydroxyethylazetidin-2-one derivativesKANEGAFUCHI CHEMICAL IND·Filed 1987·Granted Aug 29, 1989·3 cites·12 claims
- 1845US4460780AProcess for preparation of optically active thiol compoundsKANEGAFUCHI CHEMICAL IND·Filed 1983·Granted Jul 17, 1984·2 cites·5 claims
- 1945US4185153AProcess for preparing 5-(2-thienyl)hydantoinKANEGAFUCHI CHEMICAL IND·Filed 1979·Granted Jan 22, 1980·1 cites·7 claims
- 2042US5071966AProcess for preparing an enol silyl ether compoundKANEGAFUCHI CHEMICAL IND·Filed 1990·Granted Dec 10, 1991·3 cites·6 claims
- 2138US4914200AProcess for preparing 4-acetoxy-3-hydroxyethylazetidin-2-one derivativesKANEGAFUCHI CHEMICAL IND·Filed 1989·Granted Apr 3, 1990·1 cites·10 claims
- 2236US4760162AInorganic acid salt of N-(1(S)-ethoxycarbonyl-3-phenylpropyl)-L-alanylchloride and process for preparing the sameKANEGAFUCHI CHEMICAL IND·Filed 1986·Granted Jul 26, 1988·1 cites·2 claims
- 2335US4914199AProcess for preparing 4-acetoxy-3-hydroxyethylazetidin-2-one derivativesKANEGAFUCHI CHEMICAL IND·Filed 1988·Granted Apr 3, 1990·1 cites·20 claims
- 2433US4863859AProcess for preparing optically active glycerol derivativesKANEGAFUCHI CHEMICAL IND·Filed 1986·Granted Sep 5, 1989·1 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Takehisa Ohashi 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 →