Ryuichi Asaho

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for vacuum degassing and decarbonization with temperature d...
- Patent number 4,979,983
- Issue date Dec 25, 1990
- Kawasaki Steel Corporation
- Hiroshi Nishikawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Bottom tuyeres in an oxygen top-blown converter
- Patent number 4,353,533
- Issue date Oct 12, 1982
- Kawasaki Steel Corporation
- Tatsukichi Chino
- C21 - METALLURGY OF IRON