Eiji Okuma

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Alumina base ceramic sintered body and its manufacturing method
- Patent number 6,133,182
- Issue date Oct 17, 2000
- Nippon Tungsten Co., Ltd.
- Toyoshige Sasaki
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES