logo

For the Inventor, By the Inventor

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.:

US 10533242 B1

PDFFull Text
Expired
Date of Patent:
Jan. 14, 2020

Filed:

Jun. 13, 2014

Steel for cold forging

Applicant:

Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;

Inventors:

Takahiko Kohtake, Amagasaki, JP;

Kazuto Kawakami, Kisarazu, JP;

Makoto Okonogi, Chiba, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Alexandra M Moore

Int. Cl.
CPC ...
C22C 38/44 (2006.01); C21D 1/32 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C21D 8/06 (2006.01);
U.S. Cl.
CPC ...
C22C 38/44 (2013.01); C21D 1/32 (2013.01); C21D 9/525 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C21D 8/06 (2013.01); C21D 9/52 (2013.01); C21D 2211/002 (2013.01); C21D 2211/003 (2013.01); C21D 2211/004 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01); C21D 2211/009 (2013.01);
Abstract

A steel contains, in a chemical composition, C, Si, Mn, and Al, and contains pearlite as a metallographic structure, and a value obtained by dividing an Mn content in a cementite in the pearlite in terms of at % by an Mn content in a ferrite in the pearlite in terms of at % is higher than 0 and equal to or lower than 5.0.

Find Patent Forward Citations

Kohtake, Takahiko. (2020). Steel for cold forging (U.S. Patent No. 10533242). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10533242

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…