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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 11633772 B1

PDFFull Text
Date of Patent:
Apr. 25, 2023

Filed:

Jul. 03, 2019

Hot press-formed item manufacturing method, press-formed item, die, and die set

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Masahiro Kubo, Tokyo, JP;

Naruhiko Nomura, Tokyo, JP;

Toshiya Suzuki, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Solaaris Intellectual Property Group, PLLC

Primary Examiner:

Shelley M Self

Assistant Examiner:

Mohammed S Alawadi

Int. Cl.
CPC ...
B21D 22/02 (2006.01); B21D 37/10 (2006.01); B21D 22/20 (2006.01); B21D 53/88 (2006.01);
U.S. Cl.
CPC ...
B21D 22/022 (2013.01); B21D 37/10 (2013.01);
Abstract

A method of producing a hot press-formed product, in which a die includes a hard layer having a skewness (Rsk), as measured in a direction from the outside of a die hole toward an inside of the die hole, of from −5.0 to 1.2, and a hardness Hv_Die of from HV 1,000 to 1,800, over the entirety of a region of a steel sheet contact surface that is adjacent to a die shoulder portion. The steel sheet contact surface is a surface located outside of the die hole and configured to contact a hot-dip galvannealed steel sheet that is to be subjected to hot press forming.

Find Patent Forward Citations

Kubo, Masahiro. (2023). Hot press-formed item manufacturing method, press-formed item, die, and die set (U.S. Patent No. 11633772). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11633772

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

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