Ken Kutaragi

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Kitakyush, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pearlitic steel rail having excellent wear resistance and method of...
- Patent number RE42668
- Issue date Sep 6, 2011
- Nippon Steel Corporation
- Masaharu Ueda
- 148 - Metal treatment
Information Patent Grant
Pearlitic steel rail having excellent wear resistance and method of...
- Patent number RE42360
- Issue date May 17, 2011
- Nippon Steel Corporation
- Masaharu Ueda
- 148 - Metal treatment
Information Patent Grant
Pearlitic steel rail having excellent wear resistance and method of...
- Patent number RE41033
- Issue date Dec 8, 2009
- Nippn Steel Corporation
- Masaharu Ueda
- 148 - Metal treatment
Information Patent Grant
Pearlitic steel rail having excellent wear resistance and method of...
- Patent number RE40263
- Issue date Apr 29, 2008
- Nippon Steel Corporation
- Masaharu Ueda
- 148 - Metal treatment
Information Patent Grant
Pearlitic steel rail having excellent wear resistance and method of...
- Patent number 5,762,723
- Issue date Jun 9, 1998
- Nippon Steel Corporation
- Masaharu Ueda
- C21 - METALLURGY OF IRON