Yukio Sakaguchi

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Omuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Silica filler and method for its production
- Patent number 5,833,746
- Issue date Nov 10, 1998
- Denki Kagaku Kogyo Kabushiki Kaisha
- Mitsuyoshi Iwasa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES