Ryoji Ishigaki

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Hokkaido, JP

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Patents Grantslast 30 patents

Information Patent Grant
High-strength low-alloy steel excellent in high-pressure hydrogen e...
- Patent number 10,227,682
- Issue date Mar 12, 2019
- The Japan Steel Works, Ltd.
- Kouichi Takasawa
- C21 - METALLURGY OF IRON
Information Patent Grant
High-strength low-alloy steel excellent in high-pressure hydrogen e...
- Patent number 8,974,612
- Issue date Mar 10, 2015
- The Japan Steel Works, Ltd.
- Kouichi Takasawa
- C21 - METALLURGY OF IRON
Information Patent Grant
High-strength low-alloy steel excellent in high-pressure hydrogen e...
- Patent number 8,313,589
- Issue date Nov 20, 2012
- The Japan Steel Works, Ltd.
- Koichi Takasawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of determining fatigue of pressure-resistant component for h...
- Patent number 8,234,930
- Issue date Aug 7, 2012
- The Japan Steel Works, Ltd.
- Yoru Wada
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
HIGH-STRENGTH LOW-ALLOY STEEL EXCELLENT IN HIGH-PRESSURE HYDROGEN E...
- Publication number 20150152532
- Publication date Jun 4, 2015
- The Japan Steel Works, Ltd.
- Kouichi TAKASAWA
- C21 - METALLURGY OF IRON
Information Patent Application
METHOD OF DETERMINING FATIGUE OF PRESSURE-RESISTANT COMPONENT FOR H...
- Publication number 20110167921
- Publication date Jul 14, 2011
- The Japan Steel Works, Ltd.
- Yoru Wada
- G01 - MEASURING TESTING
Information Patent Application
HIGH-STRENGTH LOW-ALLOY STEEL EXCELLENT IN HIGH-PRESSURE HYDROGEN E...
- Publication number 20110067787
- Publication date Mar 24, 2011
- The Japan Steel Works, Ltd.
- Kouichi Takasawa
- C21 - METALLURGY OF IRON
Information Patent Application
HIGH-STRENGTH LOW-ALLOY STEEL EXCELLENT IN HIGH-PRESSURE HYDROGEN E...
- Publication number 20100212785
- Publication date Aug 26, 2010
- The Japan Steel Works, Ltd.
- Koichi Takasawa
- C21 - METALLURGY OF IRON