Yasumasa Shibata

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of injection compression molding
- Patent number 7,691,314
- Issue date Apr 6, 2010
- Idemitsu Kosan Co., Ltd.
- Haruhiko Ae
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Apparatus for manufacturing an optical disk substrate by injection...
- Patent number 5,156,860
- Issue date Oct 20, 1992
- Idemitsu Petrochemical Co., Ltd.
- Kotaro Kojima
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical disk substrate, optical information-storage medium, and pro...
- Patent number 5,059,461
- Issue date Oct 22, 1991
- Idemitsu Petrochemical Co., Ltd.
- Kotaro Kojima
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Method Of Injection Compression Molding And Molded Item
- Publication number 20080095982
- Publication date Apr 24, 2008
- IDEMITSU KOSAN CO., LTD.
- Haruhiko Ae
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL