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. 19, 1994
Filed:
Aug. 16, 1993
Applicant:
Inventors:
Louis-Claude Guillou, Rennes, FR;
Jean-Jacques Quisquater, Brussels, BE;
Assignees:
France Telecom, Telediffusion de France S.A., New York, FR;
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ; G07F / ;
U.S. Cl.
CPC ...
380 24 ; 380 25 ;
Abstract
Method of electronic payment by chip card. According to the invention, each token carries a number making it possible to check its authenticity. The invention is used for electronic payment.