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:
Jul. 14, 1987
Filed:
Dec. 02, 1985
Applicant:
Inventors:
Tien-Hung Shen, Sarver, PA (US);
James A Salsgiver, Sarver, PA (US);
Assignee:
Allegheny Ludlum Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148111 ; 148113 ;
Abstract
A method is provided for improving core loss of grain-oriented silicon steel by scribing the steel after cold rolling in a direction substantially transverse to the rolling direction by directing a pressurized liquid jet onto the steel surface to form selected spaced-apart scribe lines. The jet may contain solid particles which increase the scribing efficiency.