Yoshio Nakajima

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Hiroshima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for dephosphorization of chromium-containing molten pig iron...
- Patent number 5,156,671
- Issue date Oct 20, 1992
- Nisshin Steel Co., Ltd.
- Yoshio Nakajima
- C21 - METALLURGY OF IRON
Information Patent Grant
Method and apparatus for preliminary treatment of molten hot metal
- Patent number 5,154,756
- Issue date Oct 13, 1992
- Nisshin Steel Co., Ltd.
- Yoshio Nakajima
- C21 - METALLURGY OF IRON