Patents by Inventor Gilles P. Sinquin

Gilles P. Sinquin 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).

  • Alkylxylene sulfonates for enhanced oil recovery processes
    Patent number: 7332460
    Abstract: The present invention is directed to alkylxylene sulfonate for enhanced oil recovery processes. The alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and a high percentage of alkyl group attachment to the xylene ring at positions higher than the 2-position on the alkyl carbon chain. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the alkylxylene sulfonate of the present invention. The alkylxylene sulfonate is employed in an aqueous media. The method optionally employs co-surfactants.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: February 19, 2008
    Assignee: Chevron Oronite Company LLC
    Inventors: Curt B. Campbell, Gilles P. Sinquin
  • Process for preparing polyalkenylsuccinimides
    Patent number: 7091306
    Abstract: The present invention relates to an improved process for preparing polyalkenylsuccinimides having a sediment level less than 0.1 vol % comprising the steps of: (a) preparing a polyalkenyl derivative of an unsaturated acidic reagent by (i) reacting a polyalkylene with an unsaturated acidic reagent in the absence of a strong acid until at least 25% of the polyalkylene is converted to a polyalkenyl derivative of an unsaturated acidic reagent; (ii) continuing the reaction with an excess of the unsaturated acidic reagent in the presence of a strong acid to convert at least some of the unreacted polyalkylene to additional polyalkenyl derivative of an unsaturated acidic reagent; and (iii) removing the unreacted unsaturated acidic reagent; (b) reacting the unfiltered product of step (a) with a polyamine having at least one basic nitrogen atom; (c) diluting the product of step (b); and (d) subsequently filtering the polyalkenylsuccinimide product.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 15, 2006
    Assignees: Chevron Oronite Company LLC, Chevron Oronite S. A.
    Inventors: Mohammed Heddadj, William R. Ruhe, Jr., Gilles P. Sinquin
  • Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes
    Patent number: 6989355
    Abstract: The present invention is directed to an under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the under-neutralized alkylxylene sulfonic acid compositions of the present invention. The under-neutralized alkylxylene sulfonic acid compositions are employed in an aqueous media. The method optionally employs suitable co-surfactants, such as alcohols, alcohol ethers, polyalkylene glycols, poly(oxyalkylene)glycols and/or poly(oxyalkylene)glycol ethers.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: January 24, 2006
    Assignee: Chevron Oronite Company LLC
    Inventors: Curt B. Campbell, Gilles P. Sinquin
  • Process for preparing polyalkenylsuccinimides
    Publication number: 20040225105
    Abstract: The present invention relates to an improved process for preparing polyalkenylsuccinimides having a sediment level less than 0.
    Type: Application
    Filed: May 9, 2003
    Publication date: November 11, 2004
    Inventors: Mohammed Heddadj, William R. Ruhe, Gilles P. Sinquin