Yasuhiro Hoshiyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Unburned carbon-containing refractory material and vessel for molte...
- Patent number 6,464,932
- Issue date Oct 15, 2002
- Shinagawa Refractories Co., Ltd.
- Osamu Nomura
- B22 - CASTING POWDER METALLURGY