Patents by Inventor Quoc P. Nguyen

Quoc P. Nguyen 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).

  • Compositions and methods for controlling the stability of ethersulfate surfactants at elevated temperatures
    Patent number: 9109152
    Abstract: The present invention describes the method of making an ether sulfate surfactant solution hydrolytically stable by adding one or more alkalinity generating agents at levels greater than 0.05%. The surfactant solutions of the present invention have half-lives >8 months at 100° C. and find uses in EOR applications, environmental cleanups, detergent industry, and any other surfactant based high temperature applications.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: August 18, 2015
    Assignee: Board of Regents, The University of Texas System
    Inventors: Upali P. Weerasooriya, Gary A. Pope, Quoc P. Nguyen
  • DI-FUNCTIONAL ANIONIC SURFACTANTS FOR ENHANCED OIL RECOVERY
    Publication number: 20140364347
    Abstract: The present invention describes the synthesis and use of cleavable di-functional anionic surfactants for enhanced oil recovery applications and/or the use of sacrificial surfactants.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: GARY A. POPE, UPALI P. WEERASOORIYA, QUOC P. NGUYEN, LARRY N. BRITTON
  • Di-functional surfactants for enhanced oil recovery
    Patent number: 8459360
    Abstract: The present invention describes the synthesis and use of cleavable di-functional anionic surfactants for enhanced oil recovery applications and/or the use of sacrificial surfactants.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: June 11, 2013
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gary A. Pope, Upali P. Weerasooriya, Quoc P. Nguyen, Larry N. Britton
  • Method of manufacture and use of large hydrophobe ether sulfate surfactants in enhanced oil recovery (EOR) applications
    Patent number: 8211837
    Abstract: The present invention describes the method of making anionic ether sulfate surfactants by alkoxylation of a GA using PO and/or EO followed by a sulfation reaction. The GA of the present invention is made by a facile and inexpensive method that involves high temperature base catalyzed dimerization of a linear alcohol. The ether sulfate surfactants of the present invention find uses in EOR applications where it is used for solubilization and mobilization of oil and for environmental cleanup.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: July 3, 2012
    Assignee: Board of Regents, The University of Texas System
    Inventors: Upali P. Weerasooriya, Gary A. Pope, Quoc P. Nguyen
  • METHOD OF MANUFACTURE AND USE OF LARGE HYDROPHOBE ETHER SULFATE SURFACTANTS IN ENHANCED OIL RECOVERY (EOR) APPLICATIONS
    Publication number: 20110071057
    Abstract: The present invention describes the method of making anionic ether sulfate surfactants by alkoxylation of a GA using PO and/or EO followed by a sulfation reaction. The GA of the present invention is made by a facile and inexpensive method that involves high temperature base catalyzed dimerization of a linear alcohol. The ether sulfate surfactants of the present invention find uses in EOR applications where it is used for solubilization and mobilization of oil and for environmental cleanup.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 24, 2011
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Upali P. Weerasooriya, Gary A. Pope, Quoc P. Nguyen
  • COMPOSITIONS AND METHODS FOR CONTROLLING THE STABILITY OF ETHERSULFATE SURFACTANTS AT ELEVATED TEMPERATURES
    Publication number: 20110059872
    Abstract: The present invention describes the method of making an ether sulfate surfactant solution hydrolytically stable by adding one or more alkalinity generating agents at levels greater than 0.05%. The surfactant solutions of the present invention have half-lives >8 months at 100° C. and find uses in EOR applications, environmental cleanups, detergent industry, and any other surfactant based high temperature applications.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 10, 2011
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Upali P. Weerasooriya, Gary A. Pope, Quoc P. Nguyen
  • DI-FUNCTIONAL SURFACTANTS FOR ENHANCED OIL RECOVERY
    Publication number: 20110048721
    Abstract: The present invention describes the synthesis and use of cleavable di-functional anionic surfactants for enhanced oil recovery applications and/or the use of sacrificial surfactants.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 3, 2011
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Gary A. Pope, Upali P. Weerasooriya, Quoc P. Nguyen, Larry N. Britton