Hisashi Ohbayashi

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Honjyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing 2.beta.-substituted-methylpenicillin derivatives
- Patent number 4,933,444
- Issue date Jun 12, 1990
- Taiho Pharmaceutical Co., Ltd.
- Sigeru Torii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2.beta.-Substituted-methylpenicillanic acid derivatives, and salts...
- Patent number 4,891,369
- Issue date Jan 2, 1990
- Taiho Pharmaceutical Company, Limited
- Sigeru Torii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2 .beta.-substituted thiomethylpenicillin derivatives and their pre...
- Patent number 4,861,768
- Issue date Aug 29, 1989
- Taiho Pharmaceutical Company, Limited
- Sigeru Torii
- C07 - ORGANIC CHEMISTRY