Patents by Inventor Jeff Rish

Jeff Rish 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).

  • Non-invasive, opto-acoustic water current measurement system and method
    Patent number: 6552336
    Abstract: A method and system are provided for measuring water current. An acoustically-modulated beam of radiation is transmitted to a target location on the surface of a body of water. As the beam transits the water, acoustic radiation propagates away from the beam towards the surface and experiences a Doppler shift in frequency relative to the acoustic frequency used for modulation. The Doppler shift is caused by current in the water through which the acoustic radiation transits. The Doppler-shifted frequency is measured as an indication of water current.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: April 22, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jack Lloyd, Jeff Rish