Michihisa Ito

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Alloy and composite steel tube with corrosion resistance in combust...
- Patent number 5,194,222
- Issue date Mar 16, 1993
- Nippon Steel Corporation
- Hiroyuki Ogawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of dephosphorization of metal or alloy
- Patent number 4,198,229
- Issue date Apr 15, 1980
- Nippon Steel Corporation
- Hiroyuki Katayama
- C21 - METALLURGY OF IRON