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:
Dec. 14, 2021
Filed:
Dec. 17, 2018
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Hiroshi Matsuda, Chiba, JP;
Hideyuki Takahashi, Fukuyama, JP;
Hiroi Yamaguchi, Kurashiki, JP;
Yasuyuki Hayakawa, Asakuchi, JP;
Yukihiro Shingaki, Kurashiki, JP;
Takashi Terashima, Kurashiki, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 8/12 (2006.01); C23C 8/26 (2006.01); C21D 9/00 (2006.01); C21D 9/46 (2006.01); H01F 41/02 (2006.01); H01J 37/32 (2006.01); C23C 8/38 (2006.01); H01F 1/16 (2006.01); C23C 8/02 (2006.01); C23C 8/80 (2006.01);
U.S. Cl.
CPC ...
C21D 8/1255 (2013.01); C21D 8/12 (2013.01); C21D 9/0006 (2013.01); C21D 9/46 (2013.01); C23C 8/02 (2013.01); C23C 8/26 (2013.01); C23C 8/38 (2013.01); C23C 8/80 (2013.01); H01F 1/16 (2013.01); H01F 41/02 (2013.01); H01J 37/32018 (2013.01); H01J 37/3277 (2013.01); C21D 8/1272 (2013.01);
Abstract
Provided is a method for nitriding a grain-oriented electrical steel sheet which is very useful in obtaining excellent magnetic properties with no variation, that enables generating glow discharge between positive electrodes and negative electrodes disposed in a nitriding zone and irradiating the generated plasma to a strip to perform appropriate nitriding.