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:
Jul. 29, 2025
Filed:
Jun. 17, 2021
Applicant:
Nippon Steel Corporation, Tokyo, JP;
Inventors:
Kazutoshi Takeda, Tokyo, JP;
Shinsuke Takatani, Tokyo, JP;
Minako Fukuchi, Tokyo, JP;
Ichiro Tanaka, Tokyo, JP;
Assignee:
NIPPON STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 163/00 (2006.01); B32B 7/12 (2006.01); B32B 15/01 (2006.01); C08G 59/24 (2006.01); C08G 59/50 (2006.01); C08G 59/56 (2006.01); C08G 59/62 (2006.01); C09J 5/00 (2006.01); C09J 11/06 (2006.01); H01F 1/18 (2006.01);
U.S. Cl.
CPC ...
C09J 163/00 (2013.01); B32B 7/12 (2013.01); B32B 15/011 (2013.01); C08G 59/245 (2013.01); C08G 59/5006 (2013.01); C08G 59/5033 (2013.01); C08G 59/56 (2013.01); C08G 59/621 (2013.01); C09J 5/00 (2013.01); C09J 11/06 (2013.01); H01F 1/18 (2013.01); B32B 2255/06 (2013.01); B32B 2255/26 (2013.01); B32B 2307/208 (2013.01); B32B 2307/748 (2013.01); C09J 2400/166 (2013.01); C09J 2463/00 (2013.01);
Abstract
This coating composition for an electrical steel sheet contains an epoxy resin, a phenolic curing agent (A) and one or more amine-based curing agents (B) selected from the group consisting of an aromatic amine and dicyandiamide, the amount of the phenolic curing agent (A) is 1 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin, and the amount of the amine-based curing agents (B) is 0.5 to 5 parts by mass with respect to 100 parts by mass of the epoxy resin.