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:
May. 18, 2010
Filed:
Jul. 15, 2005
Patrick Smets, Nijlen, BE;
Eddy Lodewijk Hortensia Van DE Velde, Leuven, BE;
Duncan Garrett, London, GB;
Patrick Smets, Nijlen, BE;
Eddy Lodewijk Hortensia Van De Velde, Leuven, BE;
Duncan Garrett, London, GB;
MasterCard International Incorporated, Purchase, NY (US);
Abstract
An electronic payment system for conducting transactions by presenting a contactless payment card to a card reader. The card reader processes transactions when only one card is present in its operating field. The card reader uses collision detection and avoidance algorithms to detect and report instances where multiple cards are present in the operating field. In response to a reported collision, the collision may be cleared by manual intervention, i.e., by physically removing excess cards from the reader's operating field.