Seiji Sagawa

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Hirakata, JA

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Patents Grantslast 30 patents

Information Patent Grant
Method of protection from ozone deterioration for rubber
- Patent number 4,052,363
- Issue date Oct 4, 1977
- Sumitomo Chemical Company, Limited
- Shuichi Kanagawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Inhibiting ozone deterioration of rubbers
- Patent number 3,978,021
- Issue date Aug 31, 1976
- Sumitomo Chemical Company, Limited
- Seiji Sagawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing halogenated organotin compounds
- Patent number 3,975,417
- Issue date Aug 17, 1976
- Sumitomo Chemical Company
- Seiji Sagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Inhibiting ozone deterioration of rubbers
- Patent number 3,956,234
- Issue date May 11, 1976
- Sumitomo Chemical Company, Limited
- Seiji Sagawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for inhibiting premature vulcanization of diene rubbers
- Patent number 3,947,429
- Issue date Mar 30, 1976
- Sumitomo Chemical Company, Limited
- Seiji Sagawa
- C07 - ORGANIC CHEMISTRY