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.

Date of Patent:
Jan. 16, 2024

Filed:

Dec. 12, 2019
Applicant:

Threebond Co., Ltd., Tokyo, JP;

Inventor:

Ai Omura, Tokyo, JP;

Assignee:

THREEBOND CO., LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 39/03 (2006.01); B21D 28/02 (2006.01); B21D 28/26 (2006.01); C09J 5/02 (2006.01); C09J 133/08 (2006.01); C09J 135/02 (2006.01);
U.S. Cl.
CPC ...
B21D 39/03 (2013.01); B21D 28/02 (2013.01); B21D 28/26 (2013.01); C09J 5/02 (2013.01); C09J 133/08 (2013.01); C09J 135/02 (2013.01); C09J 2400/166 (2013.01);
Abstract

A method is for manufacturing a laminated steel sheet comprising laminated a predetermined number of thin steel sheets formed by punching a belt-shaped thin steel sheet into a predetermined shape. This method includes the following steps 1 to 3: step 1: a step of sequentially punching the thin steel sheet into a predetermined shape with a metallic die; step 2: a step of applying a curable composition to a predetermined portion of the thin steel sheet; and step 3: a step of irradiating the curable composition with energy rays. The curable composition is a delayed curable composition which is cured after a lapse of a predetermined time after being irradiated with energy rays.


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