Senri Okada

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Additive for use in producing spheroidal graphite cast iron
- Patent number 6,126,713
- Issue date Oct 3, 2000
- Hitachi Metals, Ltd.
- Yoshio Igarashi
- C21 - METALLURGY OF IRON
Information Patent Grant
Method and apparatus for continuously melting material by induction...
- Patent number 4,996,402
- Issue date Feb 26, 1991
- Hitachi, Ltd.
- Hideo Hashida
- C21 - METALLURGY OF IRON