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:
Sep. 15, 2026
Filed:
Jul. 03, 2023
Sumitomo Electric Industries, Ltd., Osaka, JP;
Takumi Akada, Osaka, JP;
Kei Hirai, Osaka, JP;
Tetsuya Nakajima, Osaka, JP;
Akifumi Matsuoka, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
This steel wire comprises a steel containing 0.9-1.1 mass % of carbon, 0.15-0.25 mass % of silicon, 0.25-0.35 mass % of manganese, and 0.15-0.25 mass % of chromium, with the remainder consisting of iron and unavoidable impurities, wherein: the steel has a ferrite structure; the diameter of the steel wire is 0.05-0.45 mm; the tensile strength of the steel wire is 3900 to 4700 MPa, in the longitudinal cross section of the steel wire; and the surface region from the surface of the steel wire to a depth of 10% of the diameter has a structure in which the total ratio A of the <100> azimuth aggregate structure ratio A, the <110> azimuth aggregate structure ratio A, and the <111> azimuth aggregate structure ratio Ais 32% or less.