Shigeo Seki

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
N-methanesulfonic acid derivatives of 3',4'-dideoxykanamycin B
- Patent number 4,091,202
- Issue date May 23, 1978
- Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
- Hamao Umezawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
7-[5-N-(n-Butoxyethoxy carbonyl and 2-chloroethoxy carbonyl)-amino]...
- Patent number 3,998,816
- Issue date Dec 21, 1976
- Meiji Seika Kaisha, Ltd.
- Shigeo Seki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for N-acylation of 7 amino cephem compounds
- Patent number 3,988,326
- Issue date Oct 26, 1976
- Meiji Seika Kaisha, Ltd.
- Shigeo Seki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-Halo-cephalosporins
- Patent number 3,963,712
- Issue date Jun 15, 1976
- Meiji Seika Kaisha, Ltd.
- Masao Koyama
- C07 - ORGANIC CHEMISTRY