Patents by Inventor Irv H. Wentzein

Irv H. Wentzein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for acquiring access using a smart card
    Patent number: 6003014
    Abstract: A method for using a smart card to gain access through an access device upon payment of a value (V) is performed by first operatively coupling the card to the access device. The access device reads a first and a second set of data from the card, and performs a first authentication process on the first set of data. Access is permitted if the first authentication process meets a required condition. Access is denied otherwise. If access is permitted, the second set of data is stored in the access device for further processing, including a second authentication process which operates on the first and second sets of data.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: December 14, 1999
    Assignee: Visa International Service Association
    Inventors: Alson A Lee, Jerry Sloan, Irv H. Wentzein