Toshiaki Asoh

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Ibaraki-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for purifying polycarbonate resin solution
- Patent number 6,384,185
- Issue date May 7, 2002
- Mitsubishi Gas Chemical Company, Inc.
- Minoru Inada
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing powder aggregate particle of high molecular w...
- Patent number 5,182,363
- Issue date Jan 26, 1993
- Mitsubishi Gas Chemical Co., Inc.
- Toshiaki Asoh
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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-...
Information Patent Grant
Dihydroxy compound
- Patent number 4,950,771
- Issue date Aug 21, 1990
- Mitsubishi Gas Chemical Company, Inc.
- Mitsuhito Masumoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Novel dihydroxy compound
- Patent number 4,924,025
- Issue date May 8, 1990
- Mitsubishi Gas Chemical Company, Inc.
- Mitsuhiko Masumoto
- C07 - ORGANIC CHEMISTRY