Patents by Inventor Albert K. H. Au

Albert K. H. Au 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).

  • Family pager transmitter device or similar article
    Patent number: D272443
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: January 31, 1984
    Assignee: Mattel, Inc.
    Inventors: Ka W. Wong, Albert K. H. Au
  • Family pager receiver device or similar article
    Patent number: D272534
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: February 7, 1984
    Assignee: Mattel, Inc.
    Inventors: Ka W. Wong, Albert K. H. Au
  • Electronic intrusion alarm transmitter
    Patent number: D272992
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: March 13, 1984
    Assignee: Mattel, Inc.
    Inventors: Ka W. Wong, Albert K. H. Au
  • Electronic alarm
    Patent number: D274048
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: May 29, 1984
    Assignee: Mattel, Inc.
    Inventors: Ka W. Wong, Albert K. H. Au