Yoshihiro Okamura

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Kitakyushu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing extra high tensile steel having excellent str...
- Patent number 5,827,379
- Issue date Oct 27, 1998
- Nippon Steel Corporation
- Yoshihiro Okamura
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing extra high tensile steel in 1080 MPa yield st...
- Patent number 5,447,581
- Issue date Sep 5, 1995
- Nippon Steel Corporation
- Yoshihiro Okamura
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of producing high tension steel superior in weldability and...
- Patent number 5,061,325
- Issue date Oct 29, 1991
- Nippon Steel Corporation
- Yoshihiro Okamura
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing high toughness, high strength steel having ex...
- Patent number 4,946,516
- Issue date Aug 7, 1990
- Nippon Steel Corporation
- Seinosuke Yano
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing high toughness, high strength steel having ex...
- Patent number 4,826,543
- Issue date May 2, 1989
- Nippon Steel Corporation
- Seinosuke Yano
- C21 - METALLURGY OF IRON