Hiroyuki Ishitobi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Piperaziniocephalosporins
- Patent number 5,143,910
- Issue date Sep 1, 1992
- Shionogi & Co., Ltd.
- Hiroshi Onoue
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylcarbamoyloxymethylcephem compounds
- Patent number 4,731,362
- Issue date Mar 15, 1988
- Shionogi & Co., Ltd.
- Yoshio Hamashima
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of hydroxymethylbutenoic acids via oxidation
- Patent number 4,581,173
- Issue date Apr 8, 1986
- Shionogi & Co., Ltd.
- Teruji Tsuji
- C07 - ORGANIC CHEMISTRY