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. 15, 1986
Filed:
May. 07, 1984
Applicant:
Inventor:
LeRoy R Price, Allison Park, PA (US);
Assignee:
Allegheny Ludlum Steel Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148113 ; 148 27 ; 148 28 ;
Abstract
A method for producing an annealing separator coating on grain oriented silicon steel prior to final texture annealing to improve the coating uniformity and prevent oxidation of the steel surface during this annealing operation. The method comprises coating the steel with a conventional coating, such as magnesium oxide, having an addition of an inert, high temperature refractory annealing separator agent, preferably calcined alumina. An annealing separator composition is also provided.