Hiromi Ishii

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Muroran, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ladle refining apparatus and ladle refining method using it
- Patent number 6,666,902
- Issue date Dec 23, 2003
- Nippon Steel Corporation
- Hideaki Kimura
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for addition of low-melting point metal
- Patent number 4,686,081
- Issue date Aug 11, 1987
- Nippon Steel Corporation
- Kiyoshi Takashima
- C21 - METALLURGY OF IRON