Patents by Inventor Douglas Diedrich Weiser

Douglas Diedrich Weiser 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).

  • Method of communicating emergency warnings through an existing cellular communication network, and system for communicating such warnings
    Patent number: 6112075
    Abstract: A method of communicating emergency warnings to persons within a selected in a region served by a cellular communication system that comprises a plurality of transmission stations, includes providing persons in the area with warning devices that generate an emergency warning in response to a predetermined signal; identifying at least one transmission station in the communication system to transmit the predetermined signal to warning devices in the selected area; and transmitting the predetermined signal from the identified transmission station to cause warning devices in the selected area to generate emergency warnings.
    Type: Grant
    Filed: January 2, 1998
    Date of Patent: August 29, 2000
    Inventor: Douglas Diedrich Weiser