Yasue Koyama

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel pipe with good magnetic properties and method of producing th...
- Patent number 7,942,984
- Issue date May 17, 2011
- JFE Steel Corporation
- Yasuhide Ishiguro
- C21 - METALLURGY OF IRON
Information Patent Grant
High carbon steel pipe excellent in cold formability and high frequ...
- Patent number 6,736,910
- Issue date May 18, 2004
- JFE Steel Corporation
- Takaaki Toyooka
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Steel Pipe With Good Magnetic Properties And Method Of Producing Th...
- Publication number 20080011389
- Publication date Jan 17, 2008
- Yasuhide Ishiguro
- C21 - METALLURGY OF IRON
Information Patent Application
Method of producing high-carbon steel pipe having superior cold wor...
- Publication number 20040099355
- Publication date May 27, 2004
- JFE Steel Corporation, a corporation of Japan
- Takaaki Toyooka
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
High carbon steel pipe excellent in cold formability and high frequ...
- Publication number 20020153070
- Publication date Oct 24, 2002
- Takaaki Toyooka
- C21 - METALLURGY OF IRON