Ryutaro Kawamata

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Futtsu-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Non-oriented electrical steel sheet with ultra-high magnetic flux d...
- Patent number 6,743,304
- Issue date Jun 1, 2004
- Nippon Steel Corporation
- Ryutaro Kawamata
- C21 - METALLURGY OF IRON
Information Patent Grant
Low iron loss non-oriented electrical steel sheet excellent in work...
- Patent number 6,478,892
- Issue date Nov 12, 2002
- Nippon Steel Corporation
- Ken-ichi Murakami
- C21 - METALLURGY OF IRON
Information Patent Grant
Non-oriented electrical steel sheet excellent in permeability and m...
- Patent number 6,425,962
- Issue date Jul 30, 2002
- Nippon Steel Corporation
- Ryutaro Kawamata
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing non-oriented electrical steel sheet having hi...
- Patent number 5,803,989
- Issue date Sep 8, 1998
- Nippon Steel Corporation
- Ryutaro Kawamata
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Non-oriented electrical steel sheet with ultra-high magnetic flux d...
- Publication number 20020153063
- Publication date Oct 24, 2002
- Ryutaro Kawamata
- C21 - METALLURGY OF IRON
Information Patent Application
Low iron loss non-oriented electrical steel sheet excellent in work...
- Publication number 20010037841
- Publication date Nov 8, 2001
- Ken-ichi Murakami
- C21 - METALLURGY OF IRON