Teruo Kawahigashi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polycarbonate resin from bis(hydroxy benzoyl oxy-tetra oxa spiro) cpd.
- Patent number 5,021,541
- Issue date Jun 4, 1991
- Mitsubishi Gas Chemical Co., Ltd.
- Mitsuhiko Masumoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...