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.

Date of Patent:
Feb. 24, 2026

Filed:

Dec. 13, 2021
Applicant:

Posco Co., Ltd, Pohang-si, KR;

Inventors:

Yo-Sep Yang, Seoul, KR;

Jaeseung Lee, Pohang-si, KR;

Je-Wook Jang, Pohang-si, KR;

Manjae Lee, Pohang-si, KR;

Assignee:

POSCO CO., LTD, Pohang-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 8/08 (2006.01); C21D 8/0221 (2026.01); C21D 8/0247 (2026.01); C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01);
U.S. Cl.
CPC ...
C21D 8/08 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 8/065 (2013.01); C21D 9/525 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C21D 2211/005 (2013.01); C21D 2211/009 (2013.01);
Abstract

Provided is a wire rod for a concrete reinforcing steel fiber, a steel fiber, and a manufacturing method therefor. According to one disclosed embodiment of a wire rod for a concrete reinforcing steel fiber, the wire rod comprises, by weight, C: 0.01 to 0.04%, Si: 0.07 to 0.3%, Mn: 1.0 to 2.0%, P: 0.1 to 0.3% and the balance of Fe and other unavoidable impurities, wherein, when the radius of the wire rod is r, in a region from the center of a cross section perpendicular of the longitudinal direction to 0.95*r, the area fraction of ferrite is 90% or more, and the remainder comprises pearlite, wherein the average grain size of the ferrite may be 30 μm or less and the colony size of the pearlite may be 10 μm or less.


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Yang, Yo-Sep. (2026). Wire rod for concrete reinforcing steel fiber, steel fiber, and manufacturing method therefor (U.S. Patent No. 12559809). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12559809

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