Masao Yamamiya

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Hikari, JP

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Patents Grantslast 30 patents

Information Patent Grant
Iron-silicon alloy powder magnetic cores and method of manufacturin...
- Patent number 4,956,011
- Issue date Sep 11, 1990
- Nippon Steel Corporation
- Tokuhiko Nishida
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of continuously casting lead-bearing steel
- Patent number 4,830,090
- Issue date May 16, 1989
- Nippon Steel Corporation
- Hidemaro Takeuchi
- B22 - CASTING POWDER METALLURGY