Patents by Inventor Lawrence Ladouceur

Lawrence Ladouceur 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).

  • Two-way authentication system between user's smart card and issuer-specific plug-in application modules in multi-issued transaction device
    Patent number: 5036461
    Abstract: A transaction terminal for use with diverse credit or other transaction cards is provided with an interface unit for receiving a plurality of modules, wherein each module contains programming information corresponding to transactions that may be carried out with at least one of the diverse identification cards presented to the machine. Accordingly, financial institutions who issue cards can independently arrange and program their own security and transaction routines which are to be carried out with the cards and distribute such routines in a secure manner for use on a common terminal.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: July 30, 1991
    Inventors: John C. Elliott, James A. O'Connell, Lawrence Ladouceur, William Altman, Keith Jarett
  • Multi-issuer transaction device with individual identification verification plug-in application modules for each issuer
    Patent number: 4961142
    Abstract: A transaction terminal for use with diverse credit or other transaction cards is provided with an interface unit for receiving a plurality of modules, wherein each module contains programming information corresponding to transactions that may be carried out with at least one of the diverse identification cards presented to the machine. Accordingly, financial institutions who issue cards can independently arrange and program their own security and transaction routines which are to be carried out with the cards and distribute such routines in a secure manner for use on a common terminal.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: October 2, 1990
    Assignee: MasterCard International, Inc.
    Inventors: John C. Elliott, James A. O'Connell, Lawrence Ladouceur, William Altman, Keith Jarett