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Akihito Yamane
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Amagasaki, JP
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Patents Grants
last 30 patents
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Patent Grant
Steel pipe for embedding-expanding, and method of embedding-expandi...
Patent number
7,458,426
Issue date
Dec 2, 2008
Sumitomo Metal Industries, Ltd.
Yuji Arai
C21 - METALLURGY OF IRON
Information
Patent Grant
Steel pipe for embedding-expanding, and method of embedding-expandi...
Patent number
7,225,868
Issue date
Jun 5, 2007
Sumitomo Metal Industries, Ltd.
Yuji Arai
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of manufacturing a seamless pipe
Patent number
7,174,761
Issue date
Feb 13, 2007
Sumitomo Metal Industries, Ltd.
Hiroyuki Iwamoto
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method of producing seamless steel tubes
Patent number
7,028,518
Issue date
Apr 18, 2006
Sumitomo Metal Industries, Ltd.
Kenichi Sasaki
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
Information
Patent Application
Steel pipe for embedding-expanding, and method of embedding-expandi...
Publication number
20070199720
Publication date
Aug 30, 2007
Yuji Arai
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method of manufacturing a seamless pipe
Publication number
20060059969
Publication date
Mar 23, 2006
Hiroyuki Iwamoto
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method of producing seamless steel tubes
Publication number
20040065133
Publication date
Apr 8, 2004
Kenichi Sasaki
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Steel pipe for embedding-expanding, and method of embedding-expandi...
Publication number
20040035576
Publication date
Feb 26, 2004
Yuji Arai
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...