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:
Sep. 06, 1983
Filed:
May. 15, 1981
Applicant:
Inventors:
Assignee:
Crouzet, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235493 ; 235488 ; 235187 ; 235492 ; 365173 ;
Abstract
Magnetic memory element for transport ticket or credit card, comprising a support and at least one ferromagnetic layer containing at least one piece of information recorded therein and a layer of a non-magnetic diffuser in contact with the ferromagnetic layer to irreversibly destroy the magnetism of the ferromagnetic layer when the element is heated.