US Patent 7900975 Threaded joint for steel pipes
Patent 7900975 was granted and assigned to Sumitomo Metal Industries on March, 2011 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
October 1, 2009
0
Date of Patent
March 8, 2011
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Patent Application Number
12571642
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Patent Inventor Names
Keiichi Nakamura
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Takahiro Hamamoto
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Suguru Yamaguchi
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Masaaki Sugino
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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