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:
Jan. 12, 2016
Filed:
Jun. 23, 2010
Kenichiro Eguchi, Aichi, JP;
Yuji Tanaka, Kanagawa, JP;
Mitsuo Kimura, Chiba, JP;
Yasuhide Ishiguro, Aichi, JP;
Katsumi Yamada, Kanagawa, JP;
Haruo Nakamichi, Okayama, JP;
Kenichiro Eguchi, Aichi, JP;
Yuji Tanaka, Kanagawa, JP;
Mitsuo Kimura, Chiba, JP;
Yasuhide Ishiguro, Aichi, JP;
Katsumi Yamada, Kanagawa, JP;
Haruo Nakamichi, Okayama, JP;
JFE Steel Corporation, , JP;
Abstract
A seamless steel tube contains 0.15% to 0.50% C, 0.1% to 1.0% Si, 0.3% to 1.0% Mn, 0.015% or less P, 0.005% or less S, 0.01% to 0.1% Al, 0.01% or less N, 0.1% to 1.7% Cr, 0.4% to 1.1% Mo, 0.01% to 0.12% V, 0.01% to 0.08% Nb, and 0.0005% to 0.003% B or further contains 0.03% to 1.0% Cu on a mass basis and has a microstructure which has a composition containing 0.40% or more solute Mo and a tempered martensite phase that is a main phase and which contains prior-austenite grains with a grain size number of 8.5 or more and 0.06% by mass or more of a dispersed MC-type precipitate with substantially a particulate shape.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile