Katsumi Usui

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing polyolefins
- Patent number 5,541,271
- Issue date Jul 30, 1996
- Nippon Oil Company, Limited
- Akira Sano
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation method of masterbatch composition for thermoplastic res...
- Patent number 4,929,680
- Issue date May 29, 1990
- Nippon Oil Co., Ltd.
- Saburo Matsubara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...