Patents by Inventor Mark Dempsey

Mark Dempsey 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).

  • Keyboard for an electronic device
    Patent number: 6812862
    Abstract: An electronic device comprising a keyboard in which one or more key caps each overlie a switch, the switch being activated when a key cap is depressed a predetermined amount, in which a key cap is directly joined to a key mat at a first section.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: November 2, 2004
    Assignee: Psion Digital Limited
    Inventor: Mark Dempsey
  • Stand for a cordless electric iron
    Patent number: D326008
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: May 5, 1992
    Assignee: Housemate Appliances Limited
    Inventor: Mark Dempsey
  • Combined transmitter and receiver for locating lost remote control unit
    Patent number: D367017
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: February 13, 1996
    Inventor: Mark A. Dempsey