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:
May. 05, 2015
Filed:
Apr. 04, 2008
Suguru Yoshida, Tokyo, JP;
Hiroshi Kita, Tokyo, JP;
Teruhisa Okumura, Tokyo, JP;
Hirokazu Sugiyama, Tokyo, JP;
Teruyuki Wakatsuki, Tokyo, JP;
Suguru Yoshida, Tokyo, JP;
Hiroshi Kita, Tokyo, JP;
Teruhisa Okumura, Tokyo, JP;
Hirokazu Sugiyama, Tokyo, JP;
Teruyuki Wakatsuki, Tokyo, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
A steel material superior in high temperature characteristics and toughness is provided, that is, a steel material containing, by mass %, C: 0.005% to 0.03%, Si: 0.05% to 0.40%, Mn: 0.40% to 1.70%, Nb: 0.02% to 0.25%, Ti: 0.005% to 0.025%, N: 0.0008% to 0.0045%, B: 0.0003% to 0.0030%, restricting P: 0.030% or less, S: 0.020% or less, Al: 0.03% or less, and having a balance of Fe and unavoidable impurities, where the contents of C and Nb satisfyC—Nb/7.74≦0.02and Ti-based oxides of a grain size of 0.05 to 10 μm are present in a density of 30 to 300/mm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile