Shin-ichi Toyo-oka

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for treating the surface of a thin porous film material of t...
- Patent number 5,296,510
- Issue date Mar 22, 1994
- Sumitomo Electric Industries Ltd.
- Katsuya Yamada
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for treating the surface of a thin porous film material
- Patent number 5,252,626
- Issue date Oct 12, 1993
- Sumitomo Electric Industries Inc.
- Katsuya Yamada
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for treating the surface of a thin porous film material
- Patent number 5,219,894
- Issue date Jun 15, 1993
- Sumitomo Electric Industries, Ltd.
- Katsuya Yamada
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL