Hirokatsu Seya

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rubber composition for dust cover boots
- Patent number 4,694,067
- Issue date Sep 15, 1987
- Nippon Zeon Co., Ltd.
- Akio Maeda
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Rubber vulcanizate from alkylene sulfide and epihalohydrin
- Patent number 4,689,377
- Issue date Aug 25, 1987
- Nippon Zeon Co., Ltd.
- Mitsuyoshi Aonuma
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...