Tsutomu OKUYAMA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel pipe for fuel injection pipe and fuel injection pipe using th...
- Patent number 12,000,364
- Issue date Jun 4, 2024
- USUI CO., LTD.
- Tatsuya Masuda
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel bar for downhole member, and downhole member
- Patent number 10,995,394
- Issue date May 4, 2021
- Nippon Steel Corporation
- Daisuke Matsuo
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
STEEL BAR FOR DOWNHOLE MEMBER, AND DOWNHOLE MEMBER
- Publication number 20190177823
- Publication date Jun 13, 2019
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Daisuke MATSUO
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL PIPE FOR FUEL INJECTION PIPE AND FUEL INJECTION PIPE USING TH...
- Publication number 20160369759
- Publication date Dec 22, 2016
- USUI KOKUSAI SANGYO KAISHA, LTD.
- Tatsuya MASUDA
- C21 - METALLURGY OF IRON