Ryuji Muraoka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel material for line pipes, method for producing the same, and m...
- Patent number 12,037,666
- Issue date Jul 16, 2024
- JFE Steel Corporation
- Kyono Yasuda
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel material for line pipes, method for producing the same, and m...
- Patent number 11,401,568
- Issue date Aug 2, 2022
- JFE Steel Corporation
- Kyono Yasuda
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel plate and welded steel tube exhibiting low yield ratio, high...
- Patent number 7,520,943
- Issue date Apr 21, 2009
- JFE Steel Corporation
- Nobuyuki Ishikawa
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
STEEL MATERIAL FOR LINE PIPES, METHOD FOR PRODUCING THE SAME, LINE...
- Publication number 20220220574
- Publication date Jul 14, 2022
- JFE STEEL CORPORATION
- Kyono Yasuda
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL MATERIAL FOR LINE PIPES, METHOD FOR PRODUCING THE SAME, AND M...
- Publication number 20210054471
- Publication date Feb 25, 2021
- JFE STEEL CORPORATION
- Kyono Yasuda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
STEEL MATERIAL FOR LINE PIPES, METHOD FOR PRODUCING THE SAME, AND M...
- Publication number 20210032732
- Publication date Feb 4, 2021
- JFE STEEL CORPORATION
- Kyono Yasuda
- C21 - METALLURGY OF IRON
Information Patent Application
Steel plate and welded steel tube exhibiting low yield ratio, high...
- Publication number 20060151074
- Publication date Jul 13, 2006
- Nobuyuki Ishikawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...