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:
Dec. 01, 1987
Filed:
Aug. 18, 1986
Applicant:
Inventors:
Robert W Lee, Troy, MI (US);
Neal A Schaffel, Noblesville, IN (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148101 ; 148104 ; 419 12 ;
Abstract
In accordance with a preferred embodiment, an arcuate magnet is formed by selectively hot working a composition including iron, neodymium and/or praseodymium, and boron such that an edge of the arcuate has greater apparent coercivity than a central region and the central region has a higher remanence than the edge.