Patents by Inventor Jean-Claude Laugerotte

Jean-Claude Laugerotte 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).

  • Lightened cement grout suitable for the cementation of hydrocarbon production wells
    Patent number: 5207832
    Abstract: This invention relates to a lightened gas-impermeable cement grout which comprises hydraulic cement, water, silica fumes in an amount of from about 5 to about 65 weight % based on the weight of the cement, and at least one polyethylene imine having a molecular weight of between about 600,000 and about 1,000,000 in an amount of from about 1 to about 25% weight % based on the weight of the water.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: May 4, 1993
    Assignees: Total Compagnie Francaise des Petroles, Ciments d'Origny
    Inventors: Daniel Baffreau, Jean-Claude Laugerotte, Nicolas Musikas