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. 13, 2026
Filed:
Nov. 07, 2022
Posco Co., Ltd, Gyeongsangbuk-do, KR;
Jong-Pan Kong, Gwangyang-si, KR;
Young-Roc Im, Gwangyang-si, KR;
POSCO CO., LTD, Pohang-si, KR;
Abstract
A cold rolled steel sheet including, by weight: C: 0.10 to 0.20%, Si: 0.05 to 0.495%, Al: 0.01 to 0.18%, Mn: 2.4 to 3.5%, Cr: 0.05 to 0.8%, Mo: 0.05 to 0.8%, B: 0.0001 to 0.003%, Nb: 0.005 to 0.07%, Ti: 0.005 to 0.07%, with a remainder of Fe and other unavoidable impurities. The cold-rolled steel sheet has a tensile strength (TS): 1185 to 1400 MPa, and a yield ratio (YS/TS): 0.70 or more. The cold-rolled steel sheet has a microstructure including, by area: fresh martensite: 1 to 11%, one or two of tempered martensite and bainite: 80 to 97%, retained austenite: 1 to 9%, and ferrite: 7% or less (including 0%). The microstructure includes at least one of MC, M(C,N), and their composite precipitates (M=Nb, Ti, Si, Cr, Mo, Fe) with an average size of 20 nm or less in a fraction of 50/μmor more.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile