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, 1990
Filed:
Apr. 11, 1988
Applicant:
Inventors:
Assignee:
Kawasaki Steel Corp., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148112 ; 21912136 ; 21912159 ;
Abstract
The iron loss is reduced by irradiating plasma flame to the surface of the grain oriented silicon steel sheet, wherein the irradiation interval (l) of plasma flame is controlled so as to satisfy the following equation (1):