Patents by Inventor James K. Matthews

James K. Matthews 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).

  • Parallel port multiplexor for PC parallel port
    Patent number: 5276443
    Abstract: A multiplexor for use with a computer having a parallel port, for providing multiple separately addressable auxiliary parallel ports.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: January 4, 1994
    Assignee: Xircom, Inc.
    Inventors: Dirk I. Gates, James K. Matthews, Monte A. Pooley, David B. Rosen
  • Parallel port multiplexor for use with a computer
    Patent number: D339116
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: September 7, 1993
    Assignee: Xircom, Inc.
    Inventors: Dirk I. Gates, James K. Matthews, Monte A. Pooley