Toshiro Anraku

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cr-plated mandrel bar for manufacturing hot seamless tube and metho...
- Patent number 7,165,431
- Issue date Jan 23, 2007
- Sumitomo Metal Industries, Ltd.
- Sumio Iida
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Making method for seamless metallic tube
- Patent number 6,988,387
- Issue date Jan 24, 2006
- Sumitomo Metal Industries, Ltd.
- Hirotsugu Nakaike
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Cr-plated mandrel bar for manufacturing hot seamless tube and metho...
- Publication number 20060130548
- Publication date Jun 22, 2006
- Sumio Iida
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Making method for seamless metallic tube
- Publication number 20050210944
- Publication date Sep 29, 2005
- Hirotsugu Nakaike
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...