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:
Apr. 24, 2018
Filed:
Mar. 13, 2013
Applicant:
Asteer Co., Ltd., Soja-shi, JP;
Inventors:
Assignee:
ASTEER CO., LTD., Soja-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D 1/18 (2006.01); C21D 11/00 (2006.01); C21D 1/34 (2006.01); C21D 1/673 (2006.01); C21D 1/40 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01);
U.S. Cl.
CPC ...
C21D 1/18 (2013.01); C21D 1/34 (2013.01); C21D 1/40 (2013.01); C21D 1/673 (2013.01); C21D 6/00 (2013.01); C21D 8/0247 (2013.01); C21D 8/0294 (2013.01); C21D 9/46 (2013.01); C21D 11/005 (2013.01); C22C 38/00 (2013.01); C21D 2221/00 (2013.01); C21D 2221/02 (2013.01);
Abstract
Provided is a method for strengthening a steel plate member employing a heating and quenching treatment. The method includes a first heating step, a partial cooling step, a second heating step and an entire cooling step, each step conducted in the written order.