Patents by Inventor John Lewis Detch

John Lewis Detch 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).

  • Wideband retroreflector
    Patent number: 7383026
    Abstract: A novel single wideband retroreflector is disclosed that eliminates the need for a local oscillator and a local transmitter. The wideband retroreflector of the present invention comprises an antenna, a circulator, and a mixer. An externally produced continuous wave radio wave transmission within the microwave-millimeter wave frequency band is modulated with a wideband signal with a minimum operating instantaneous bandwidth of 5 KHz-500 MHz and retransmitted as a modulated waveform by the antenna.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: June 3, 2008
    Assignee: The United States of America as represented by the Nation Security Agency
    Inventors: John Lewis Detch, Hugh Warren Schwartz