Masahiko Oka

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Ohtsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber comprising a methacrylate polymer core and a fluoro p...
- Patent number 4,812,011
- Issue date Mar 14, 1989
- Sumitomo Chemical Co.
- Yoshiharu Tatsukami
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL