Patents by Inventor David G. Doe

David G. Doe 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).

  • Patent number: 6239700
    Abstract: Wireless communication system for location of a person and identification of a distress condition of the person comprising portable transceivers (20) carried by persons, each having an associated alarm switch (40), the transceiver activatable locally and/or via a remote network and the alarm switch operable locally to activate the transceiver.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: May 29, 2001
    Assignee: Hoffman Resources, Inc.
    Inventors: Mark S. Hoffman, Judd A. Hoffman, Ann Hoffman, David G. Doe
  • Patent number: 5742233
    Abstract: A signaling system comprises a portable signaling unit, a remote alarm switch device, a central dispatch station, and a wireless communication system such as a cellular or telephone system, etc., and a GPS or alike system. The portable signaling unit and the remote alarm switch may be adapted to be worn at different locations on the person's body. The remote alarm switch may be concealed in the form of a wristband or in the form of any other object such as a broach, pendant, or keychain. When the person in distress activates the remote alarm switch or when the remote alarm switch is removed from the individual by a forceful or unauthorized action or when the signaling unit is removed from the proximity of the remote alarm switch, the portable signaling unit sends a data transmission which includes its location to the central dispatch station. The portable signaling unit also has manual alarm trigger capabilities so it can be used without the remote alarm switch unit.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: April 21, 1998
    Assignee: Hoffman Resources, LLC
    Inventors: Mark S. Hoffman, Judd A. Hoffman, Ann Hoffman, David G. Doe