Hiromi Toyota

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing cold rolled steel sheets having excellent pre...
- Patent number 4,981,531
- Issue date Jan 1, 1991
- Nippon Steel Corporation
- Hiroshi Katoh
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing cold rolled steel sheets having excellent pre...
- Patent number 4,443,272
- Issue date Apr 17, 1984
- Nippon Steel Corporation
- Hiroshi Katoh
- C21 - METALLURGY OF IRON