Michio Nishiyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing material for low melting point metal casting e...
- Patent number 5,091,128
- Issue date Feb 25, 1992
- Nichias Corporation
- Tsutomu Yamamoto
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for producing material for low melting point metal casting e...
- Patent number 4,975,231
- Issue date Dec 4, 1990
- Nichias Corporation
- Tsutomu Yamamoto
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Material for low melting point metal casting equipment
- Patent number 4,690,867
- Issue date Sep 1, 1987
- Nichias Corporation
- Tsutomu Yamamoto
- B22 - CASTING POWDER METALLURGY