Shigenori Shirouzu

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Sodegaura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical disk substrate comprising aromatic polycarbonate
- Patent number 4,923,962
- Issue date May 8, 1990
- Idemitsu Kosan Co., Ltd.
- Kazuyoshi Shigematsu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyformal resin and process for producing said resin
- Patent number 4,801,679
- Issue date Jan 31, 1989
- Idemitsu Kosan Co., Ltd.
- Kazuyoshi Shigematsu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...