Seiichi Higashiyama

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Fuji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polyacetal composition and method of preparation thereof
- Patent number 4,831,073
- Issue date May 16, 1989
- Polyplastics Co., Ltd.
- Susumu Okushiro
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of producing an improved polyacetal polymer
- Patent number 4,540,773
- Issue date Sep 10, 1985
- Polyplastics Company, Ltd.
- Hiroyasu Komazawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...