Nobutoshi Murao

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Wakayama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
High strength seamless steel pipe excellent in hydrogen-induced cra...
- Patent number 7,416,617
- Issue date Aug 26, 2008
- Sumitomo Metal Industries, Ltd.
- Nobutoshi Murao
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
High strength seamless steel pipe excellent in hydrogen-induced cra...
- Publication number 20080283161
- Publication date Nov 20, 2008
- Nobutoshi Murao
- C21 - METALLURGY OF IRON
Information Patent Application
Seamless steel tubes and pipes for use in oil well
- Publication number 20060231168
- Publication date Oct 19, 2006
- Keiichi Nakamura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
High strength seamless steel pipe excellent in hydrogen-induced cra...
- Publication number 20050167013
- Publication date Aug 4, 2005
- Nobutoshi Murao
- C21 - METALLURGY OF IRON