Yoshihiko Numata

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Sagamihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composite nitride sintered body
- Patent number 4,642,298
- Issue date Feb 10, 1987
- Tokuyama Soda Kabushiki Kaisha
- Nobuyuki Kuramoto
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Basic aluminum sulfate and process for production thereof
- Patent number 4,526,772
- Issue date Jul 2, 1985
- Tokuyama Suda Kabushiki Kaisha
- Kazuya Takada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES