US Patent 8317946 Seamless steel pipe and method for manufacturing the same

Patent 8317946 was granted and assigned to Sumitomo Metal Industries on November, 2012 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Sumitomo Metal Industries

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

83179460

Patent Inventor Names

Takashi Takano0

Yuji Arai0

Date of Patent

November 27, 2012

Patent Application Number

130902970

Date Filed

April 20, 2011

Patent Citations Received

‌

US Patent 11833561 Method of manufacturing a coiled tubing string

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US Patent 12129533 Ultra-fine grained steels having corrosion- fatigue resistance

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US Patent 11952648 Method of forming and heat treating coiled tubing

Patent Primary Examiner

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Deborah Yee

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