Mituhiko Masumoto

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing copolycarbonate oligomer from dichloroformate
- Patent number 5,115,081
- Issue date May 19, 1992
- Mitsubishi Gas Chemical Co., Inc.
- Mituhiko Masumoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing fatty acid-terminated polycarbonate resin
- Patent number 4,939,231
- Issue date Jul 3, 1990
- Mitsubishi Gas Chemical Company, Inc.
- Mituhiko Masumoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Molding material for optics
- Patent number 4,888,401
- Issue date Dec 19, 1989
- Mitsubishi Gas Chemical Co., Ltd.
- Takao Kawaki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Copolycarbonate resin from branched chain alkylene bis phenol
- Patent number 4,695,620
- Issue date Sep 22, 1987
- Mitsubishi Gas Chemical Company, Inc.
- Mituhiko Masumoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical articles of branched polycarbonate resin
- Patent number 4,631,334
- Issue date Dec 23, 1986
- Mitsubishi Gas Chemical Company, Inc.
- Mituhiko Masumoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...