Sanwa Yushi Kabushiki Kaisha

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Yamagata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing porous carbon material product
- Patent number 5,916,499
- Issue date Jun 29, 1999
- Sanwa Yushi Kabushiki Kaisha
- Junichi Murayama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES