Nobuo Soma

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Hiro, JA

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Patents Grantslast 30 patents

Information Patent Grant
1,3,8-Triazaspiro�4.5!decane-2,4-dione polymer stabilizers
- Patent number 4,097,587
- Issue date Jun 27, 1978
- Sankyo Company, Limited
- Nobuo Soma
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Stabilization of polymers by penta- or hexa-substituted 4-piperidin...
- Patent number 4,075,165
- Issue date Feb 21, 1978
- Ciba-Geigy Corporation
- Nobuo Soma
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4,4'-Bipiperidylidene derivatives and their use as stabilizers
- Patent number 4,055,536
- Issue date Oct 25, 1977
- Sankyo Company Limited
- Nobuo Soma
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silver halide emulsion containing an arylphosphonium salt as antifo...
- Patent number 3,951,661
- Issue date Apr 20, 1976
- Konishiroku Photo Industry Co.
- Nobuo Soma
- C07 - ORGANIC CHEMISTRY