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:
Sep. 15, 2020
Filed:
Jul. 03, 2014
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Inventors:
Koji Hirano, Kisarazu, JP;
Hirofumi Imai, Kisarazu, JP;
Hideyuki Hamamura, Futtsu, JP;
Tatsuhiko Sakai, Oita, JP;
Assignee:
NIPPON STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/064 (2014.01); C21D 8/12 (2006.01); C22C 38/06 (2006.01); H01F 1/16 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); H01F 1/03 (2006.01);
U.S. Cl.
CPC ...
B23K 26/064 (2015.10); C21D 8/12 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); H01F 1/0306 (2013.01); H01F 1/16 (2013.01); C22C 38/00 (2013.01);
Abstract
In a laser processing apparatus for refining magnetic domains of a grain-oriented electromagnetic steel sheet by setting a laser beam to be focused on the grain-oriented electromagnetic steel sheet and scanned in a scanning direction, the laser beam focused on the grain-oriented electromagnetic steel sheet is linearly polarized light, and the angle between the linear polarization direction and the scanning direction is equal to or higher than 0° and lower than 45°.