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:
Jun. 16, 2026
Filed:
Jan. 14, 2020
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Koji Yamashita, Kobe, JP;
Shogo Murakami, Kobe, JP;
Masayuki Sakata, Kobe, JP;
Masamichi Chiba, Kobe, JP;
Kobe Steel, Ltd., Kobe, JP;
Abstract
Disclosed is a mechanical structure steel for cold-working, including: C: 0.32 to 0.44% by mass, Si: 0.15 to 0.35% by mass, Mn: 0.55 to 0.95% by mass, P: 0.030% by mass or less, S: 0.030% by mass or less, Cr: 0.85 to 1.25% by mass, Mo: 0.15 to 0.35% by mass, and Al: 0.01 to 0.1% by mass, with the balance consisting of iron and inevitable impurities, wherein an area ratio of proeutectoid ferrite is 30% or more and 70% or less, and an average grain size of ferrite crystal grains is 5 to 15 μm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile