Noboru Okuyama

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Muroran, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of adding low-melting-point metal to molten steel
- Patent number 4,751,047
- Issue date Jun 14, 1988
- Nippon Steel Corporation
- Masashi Yoshida
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Tundish for continuous casting of free cutting steel
- Patent number 4,671,499
- Issue date Jun 9, 1987
- Nippon Steel Corporation
- Kazuo Ishiyama
- B22 - CASTING POWDER METALLURGY