Patents by Inventor Joseph E. Blue

Joseph E. Blue 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 alerting sea cows of the danger of approaching motor vessels
    Patent number: 5850372
    Abstract: A method of alerting sea cows to the existence of danger underwater includes generating a modulated acoustical signal in a predetermined source frequency band and sound pressure level and projecting the generated signal underwater in a directional manner and in a direction corresponding with the direction of travel of a motor vessel, wherein the projected modulated acoustical signal has an underwater frequency ranging between 3 kHz and 26 kHz.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: December 15, 1998
    Assignee: Leviathan Legacy, Inc.
    Inventor: Joseph E. Blue
  • Method of alerting marine mammals and other mammals underwater of the danger of approaching motor vessels
    Patent number: 5559759
    Abstract: A method of alerting marine mammals and other mammals underwater to the danger of approaching motor vessels includes generating a pulsed acoustical signal at a predetermined source frequency and at a fixed or variable (with boat speed) sound pressure level and projecting the generated signal underwater in a highly directional manner from a motor vessel and in a direction corresponding with the direction of travel of the motor vessel or from fixed hazards which present a danger to mammals underwater; the projected pulsed acoustical signal having an underwater frequency ranging between 3 kHz and 26 kHz.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: September 24, 1996
    Inventors: Laura A. Gerstein, Edmund R. Gerstein, Joseph E. Blue
  • Low frequency sound source for acoustic sweeps
    Patent number: 4961175
    Abstract: An underwater acoustic generator comprising a tapered solid positioned in a luid flow to produce a cavitation void. A source of gas supplies the void with gas to produce a resonant gas bubble.
    Type: Grant
    Filed: December 12, 1967
    Date of Patent: October 2, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Joseph E. Blue, Thomas C. Watson