Patents by Inventor Mark B. Friesen

Mark B. Friesen 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).

  • Portable personal computer with a touch screen
    Patent number: D348444
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: July 5, 1994
    Assignee: Motorola, Inc.
    Inventors: Andronicos Papademetriou, William R. Groves, Roger W. Ady, Harold J. Gorenz, Jr., C. Patrick Richardson, Leonid Soren, Hartmut Esslinger, Daniel K. Harden, Mark B. Friesen
  • Battery pack for portable communicator/computer
    Patent number: D349095
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: July 26, 1994
    Assignee: Motorola, Inc.
    Inventors: Harold J. Gorenz, Jr., Roger W. Ady, William R. Groves, C. Patrick Richardson, Mark B. Friesen, Hartmut Esslinger, Daniel K. Harden
  • Battery charger for a personal wireless communicator
    Patent number: D351133
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: October 4, 1994
    Assignee: Motorola, Inc.
    Inventors: Polly S. Jungels-Butler, Mark B. Friesen, Daniel K. Harden
  • Antenna for portable communicator/computer
    Patent number: D357683
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: April 25, 1995
    Assignee: Motorola
    Inventors: Edward A. Cline, Harold J. Gorenz, Jr., Charles D. Hood, III, Daniel K. Harden, Mark B. Friesen, Gary D. Schulz