Toshiaki Otsuka

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Wako-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Weldable steel of high strength and high toughness, and method of p...
- Patent number 7,976,651
- Issue date Jul 12, 2011
- Daido Steel Co., Ltd.
- Masanao Fujiwara
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Weldable steel of high strength and high toughness, and method of p...
- Publication number 20100243110
- Publication date Sep 30, 2010
- DAIDO STEEL CO., LTD.
- Masanao Fujiwara
- C21 - METALLURGY OF IRON