Ryoji Nagamine

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Kawagoe, JA

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Patents Grantslast 30 patents

Information Patent Grant
Method for preparing a polyurethane foam comprising quaternary ammo...
- Patent number 3,933,697
- Issue date Jan 20, 1976
- Toyo Rubber Chemical Industrial Corporation
- Osamu Fujii
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...