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. 30, 2007
Filed:
Oct. 10, 2000
Applicants:
Marco Martens, Chappaqua, NY (US);
Charles Philippe Tresser, Mamaroneck, NY (US);
Inventors:
Marco Martens, Chappaqua, NY (US);
Charles Philippe Tresser, Mamaroneck, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method (and system) for preventing counterfeiting and cloning of smart cards, includes providing a smart card with a cryptographic structure for authorizing the smart card which can not be accessed completely by a predetermined small number of readings. The cryptographic structure can be built only by whoever emits the card or an agent thereof.