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. 10, 2018
Filed:
Mar. 24, 2014
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Masayasu Nagoshi, Kawasaki, JP;
Takako Yamashita, Chiba, JP;
Yukio Usui, Chiba, JP;
Shigehiro Takajo, Kurashiki, JP;
Kazuhiro Hanazawa, Kurashiki, JP;
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/66 (2006.01); H01F 1/16 (2006.01); G01N 21/88 (2006.01); G01N 21/95 (2006.01); G01N 23/225 (2018.01); C21D 8/12 (2006.01);
U.S. Cl.
CPC ...
G01N 21/66 (2013.01); G01N 21/8851 (2013.01); G01N 21/95 (2013.01); G01N 23/2254 (2013.01); H01F 1/16 (2013.01); C21D 8/12 (2013.01); C21D 8/1283 (2013.01); G01N 2021/8887 (2013.01);
Abstract
The location where forsterite is present is checked in a region from which light excited by an electron beam is emitted when a material containing forsterite is irradiated with an electron beam. The material is preferably a grain oriented electrical steel sheet having a forsterite layer. In addition, it is preferable that the accelerating voltage be 10 kV or more when an electron beam is radiated when the material is a grain oriented electrical steel sheet having a tension coating layer on the forsterite layer.