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:
Aug. 20, 2013
Filed:
Oct. 18, 2004
Yoshio Yamazaki, Aichi, JP;
Yukio Miyata, Aichi, JP;
Mitsuo Kimura, Aichi, JP;
Kei Sakata, Aichi, JP;
Masahito Tanaka, Aichi, JP;
Yoshio Yamazaki, Aichi, JP;
Yukio Miyata, Aichi, JP;
Mitsuo Kimura, Aichi, JP;
Kei Sakata, Aichi, JP;
Masahito Tanaka, Aichi, JP;
JFE Steel Corporation, , JP;
Abstract
A seamless expandable oil country tubular article, which has a superior pipe expansion property in a expanding process at an expand ratio of more than about 30% although having a high strength such as a tensile strength (TS) of about 600 MPa or more, and a manufacturing method thereof, the seamless expandable oil country tubular goods being in an as-rolled state or being processed, optionally necessary, by inexpensive nonthermal-refining type heat treatment.