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:
Jan. 07, 2003
Filed:
Jan. 25, 1999
Applicant:
Inventors:
Frédéric Vasnier, Colombes, FR;
Anne-Gaëlle Lelong-Gilbert, Viroflay, FR;
Pascal Hubbe, Paris, FR;
Christophe Choquet, Paris, FR;
Assignee:
Alcatel, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 ; H04L 9/06 ;
U.S. Cl.
CPC ...
H04L 9/00 ; H04L 9/06 ;
Abstract
A method of transferring information between a subscriber identification model and a mobile terminal constituting a station of a radiocommunication system in which at least some of the information transferred between said module and said terminal is protected by encryption. The subscriber identification module and the mobile terminal include encryption means using a key defined at least in part by periodically-varying data specific to the system.