Akihiro Maruyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Foamable phenolic resin composition and process for preparation the...
- Patent number 5,137,931
- Issue date Aug 11, 1992
- Asahi Yukizai Kogyo Co., Ltd.
- Syuji Okumura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing phenol resin foams and method of making foamed...
- Patent number 5,008,297
- Issue date Apr 16, 1991
- Bridgestone Corporation
- Akihiro Maruyama
- B32 - LAYERED PRODUCTS