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:
May. 04, 2021
Filed:
Feb. 05, 2018
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Koichi Nakagawa, Tokyo, JP;
Yoshikiyo Tamai, Tokyo, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/01 (2006.01); C22C 18/00 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); B21D 22/02 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C21D 1/18 (2006.01); C23C 2/02 (2006.01); C21D 3/04 (2006.01); C21D 8/04 (2006.01); C22C 38/08 (2006.01); C22C 38/18 (2006.01); C22C 38/28 (2006.01); C22C 38/16 (2006.01); C22C 38/32 (2006.01); C21D 9/48 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C23C 2/06 (2006.01); C21D 9/00 (2006.01); C21D 1/673 (2006.01); C21D 1/74 (2006.01); B32B 15/04 (2006.01); C23C 2/26 (2006.01); C23C 28/02 (2006.01); C23C 30/00 (2006.01); B32B 15/18 (2006.01); C23C 2/12 (2006.01); C23C 2/40 (2006.01); C22C 38/50 (2006.01); C22C 38/40 (2006.01); C22C 38/38 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/54 (2006.01); C22C 38/22 (2006.01); C22C 38/46 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/20 (2006.01); C22C 38/48 (2006.01); C22C 38/34 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); B21D 22/022 (2013.01); B32B 15/012 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C21D 1/18 (2013.01); C21D 1/673 (2013.01); C21D 1/74 (2013.01); C21D 3/04 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0236 (2013.01); C21D 8/0247 (2013.01); C21D 8/0457 (2013.01); C21D 8/0473 (2013.01); C21D 9/0068 (2013.01); C21D 9/48 (2013.01); C22C 18/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (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); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/34 (2013.01); C22C 38/38 (2013.01); C22C 38/40 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C23C 2/02 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/26 (2013.01); C23C 2/40 (2013.01); C23C 28/02 (2013.01); C23C 28/021 (2013.01); C23C 28/023 (2013.01); C23C 28/025 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01); Y10T 428/12757 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12951 (2015.01); Y10T 428/12958 (2015.01); Y10T 428/12965 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24942 (2015.01); Y10T 428/26 (2015.01);
Abstract
A hot pressed part comprises: a predetermined chemical composition; and a steel microstructure that is a gradient microstructure in which, in a thickness direction, a surface layer is a soft layer, an inside is a hard layer, and a layer between the soft layer and the hard layer is a transition layer.