The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2019
Filed:
Sep. 09, 2013
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 8/02 (2006.01); C23C 8/12 (2006.01); C25D 5/50 (2006.01); C25D 7/00 (2006.01); B21B 19/04 (2006.01); B21B 25/00 (2006.01); B21B 28/00 (2006.01);
U.S. Cl.
CPC ...
B21B 28/00 (2013.01); B21B 25/00 (2013.01); C23C 8/02 (2013.01); C23C 8/12 (2013.01); C25D 5/50 (2013.01); C25D 7/00 (2013.01); B21B 19/04 (2013.01);
Abstract
A plug for rolling of a seamless steel pipe, the plug having an oxide layer composed of a cobalt-base oxide on a surface of a coating layer formed by coating a surface of a base metal with cobalt or a cobalt-base alloy, a method for manufacturing the plug and a method for manufacturing a seamless steel pipe using the plug.