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:
Mar. 03, 1981
Filed:
Nov. 09, 1979
Applicant:
Inventor:
Sungho Jin, Meyersville, NJ (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148103 ; 148108 ; 148 3157 ;
Abstract
Fine-grained Fe-Cr-Co magnetic alloys are disclosed which have desirable magnetic properties such as, in particular, a coercive force in the range of 300-600 Oersted, a remanence in the range of 8000-13000 Gauss, and a maximum energy product in the range of 1-6 MGOe. Disclosed alloys consist essentially of 25-29 weight percent Cr, 7-12 weight percent Co, and remainder iron; processing of disclosed alloys may typically include low-temperature solution annealing, cold shaping, and an aging heat treatment. Disclosed magnetic alloys may be used, e.g., in the manufacture of ringers, relays, and electro-acoustic transducers.