Yasuhito Wakabayashi

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Admixture of cement composition
- Patent number 6,190,451
- Issue date Feb 20, 2001
- Showa Denko Kabushiki Kaisha
- Sumio Soya
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES