Yoshimichi Hara

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sintered bodies Al.sub.2 O.sub.3 -TiC-TiO.sub.2 continuing yttrium (y)
- Patent number 4,356,272
- Issue date Oct 26, 1982
- Nippon Tungsten Co., Ltd.
- Yutaka Kanemitsu
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cutting tool material and method for producing cutting tool material
- Patent number 4,249,914
- Issue date Feb 10, 1981
- Nippon Tungsten Co., Ltd.
- Kazuki Ogawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for producing a sintered body of high density
- Patent number 4,108,652
- Issue date Aug 22, 1978
- Nippon Tungsten Co., Ltd.
- Kazuki Ogawa
- B22 - CASTING POWDER METALLURGY