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:
Feb. 28, 2023
Filed:
Mar. 16, 2017
Applicant:
Tateho Chemical Industries Co., Ltd., Ako, JP;
Inventors:
Assignee:
TATEHO CHEMICAL INDUSTRIES CO., LTD., Ako, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 5/02 (2006.01); C21D 1/70 (2006.01); C21D 3/04 (2006.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); H01F 1/147 (2006.01);
U.S. Cl.
CPC ...
C01F 5/02 (2013.01); C21D 1/70 (2013.01); C21D 3/04 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1283 (2013.01); C21D 9/46 (2013.01); H01F 1/147 (2013.01); C01P 2002/52 (2013.01); C01P 2006/12 (2013.01);
Abstract
An object of the present invention is to provide magnesium oxide for an annealing separator which is useful for obtaining grain-oriented electromagnetic steel sheets with excellent magnetic properties and insulating properties. To resolve the above object, an aspect of the present invention resides in magnesium oxide for an annealing separator having a sulfur content of 0.1 to 0.5 mass % and an aggregation degree R/Rof 3.0 to 5.5 wherein Ris the particle size calculated from the Blaine specific surface area and Ris the particle size calculated from the BET specific surface area.