Sigenori Yamaoka

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Crosslinked resin of epoxy compound and isocyanate and process for...
- Patent number 4,401,499
- Issue date Aug 30, 1983
- Sumitomo Bakelite Company Limited
- Shoroku Kaneko
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Flexible printed circuit base board and method for producing the same
- Patent number 4,353,954
- Issue date Oct 12, 1982
- Sumitomo Bakelite Company, Limited
- Sigenori Yamaoka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...