Shuzo Iyoshi

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Himeji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Large diameter optical disk substrate made of polycarbonate
- Patent number 4,764,331
- Issue date Aug 16, 1988
- Daicel Chemical Industries, Ltd.
- Shinji Tokuhara
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL