Tadao Takeyama

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Non-crystalline ether-imide type high purity bismaleimide compositi...
- Patent number 5,371,236
- Issue date Dec 6, 1994
- Mitsubishi Petrochemical Co., Ltd.
- Kaoru Kanayama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical disc and method of manufacturing the same
- Patent number 4,923,942
- Issue date May 8, 1990
- Mitsubishi Petrochemical Company, Ltd.
- Tadao Takeyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for cast molding plastic substrate
- Patent number 4,734,477
- Issue date Mar 29, 1988
- Mitsubishi Petrochemical Co., Ltd.
- Takao Inoue
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL