Patents by Inventor Paul Leon Guerber

Paul Leon Guerber 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).

  • Process and apparatus for producing deep boreholes
    Patent number: 4116285
    Abstract: This invention concerns the production of very deep boreholes. A rotary drilling tool is suspended at one end of a very long line of supporting elements such as a cable. During at least the entire duration of the drilling operation, the borehole is filled at least partly with at least one substance which remains in a liquid state and has a density greater than the mean density of the drilled ground strata. Thus any infiltrations in the borehole and the drilling debris move naturally upwards to the free surface of the liquid substance filling the borehole.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: September 26, 1978
    Assignee: Coyne & Bellier, Bureau d'ingenieurs Conseils
    Inventor: Paul Leon Guerber