Patents by Inventor Gerard Sassus-Bourda

Gerard Sassus-Bourda 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 and device for in situ detection of a mineral deposit fluid within a borehole
    Patent number: 4286461
    Abstract: The amplitude variation of an acoustic wave propagated within drilling mud mixed with a mineral-deposit fluid is measured and compared with the amplitude of a reference wave obtained from the drilling mud alone. The method and the device are primarily applied to the detection of an inflow of oil or gas during a well-drilling operation.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: September 1, 1981
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Philippe Bres, Christian Berge, Gerard Sassus-Bourda