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:
Nov. 08, 2011
Filed:
Sep. 07, 2006
Koichi Sakamoto, Kobe, JP;
Hiroshi Yaguchi, Kobe, JP;
Atsuhiko Yoshida, Kobe, JP;
Goro Anan, Kobe, JP;
Yoshiteru Fukuoka, Kobe, JP;
Koichi Sakamoto, Kobe, JP;
Hiroshi Yaguchi, Kobe, JP;
Atsuhiko Yoshida, Kobe, JP;
Goro Anan, Kobe, JP;
Yoshiteru Fukuoka, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A low carbon resulfurized free-machining steel having a high machinability is provided. This steel comprises 0.02 to 0.15% by mass of C, up to 0.004% by mass (more than 0% by mass) of Si, 0.6 to 3% by mass of Mn, 0.02 to 0.2% by mass of P, 0.2 to 1% by mass of S, up to 0.005% by mass (more than 0%) of Al, 0.008 to 0.04% by mass of O, and 0.002 to 0.03% by mass of N; and the average oxygen concentration in the MnS in the steel is at least 0.4% by mass.