Hisashi Hirukawa

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of evaluating high fatigue strength material in high tensile...
- Patent number 6,546,808
- Issue date Apr 15, 2003
- National Institute for Materials Science
- Tatsuaki Sawai
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Superfine grain steel having nitrided layer
- Publication number 20050241733
- Publication date Nov 3, 2005
- NATIONAL INSTITUTE FOR MATERIALS SCIENCE
- Saburo Matsuoka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of evaluating high fatigue strength material in high tensile...
- Publication number 20020033053
- Publication date Mar 21, 2002
- Tatsuaki Sawai
- G01 - MEASURING TESTING