Patents by Inventor Larry N. Britton

Larry N. Britton 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).

  • 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
  • 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
  • METHOD OF SOIL REMEDIATION
    Publication number: 20010009927
    Abstract: A surfactant composition useful in soil remediation comprising compounds having the structure: 1
    Type: Application
    Filed: January 6, 1999
    Publication date: July 26, 2001
    Inventors: UPALI WEERASOORIYA, LARRY N. BRITTON, ALLEN M. NIELSEN, STEVE V. ORSAK, FRANK GATES
  • Stable aqueous enzyme compositions
    Patent number: 6121225
    Abstract: A stabilized aqueous enzyme composition comprising water, from about 0.1% to about 75% by weight of a detergent surfactant selected from the group consisting of anionic surfactants or anionic surfactants and one or more non-anionic detergent actives, from about 0.001% to about 10% by weight proteolytic enzyme, and an effective amount of an enzyme stabilizer having the formula:X--O--(C.sub.n H.sub.2n O).sub.a --H [I]wherein "X" is an organic radical having from 14 to 22 carbon atoms, "a" is an integer from 10 to 26, and "n" is an integer from 2 to 4, and provided that "X" has a hydrophobicity similar to a linear alkyl group having from 14 to 22 carbon atoms.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: September 19, 2000
    Assignee: CONDEA Vista Company
    Inventors: Larry N. Britton, Geoffrey L. Russell, Allen M. Nielsen
  • Combination vibrator, aerator, and liquid-injection system
    Patent number: 5150988
    Abstract: A combination vibrator, aerator, and liquid-injection device for in-situ treatment of sediments to facilitate the reduction, elimination or removal of substances by microbiological or chemical treatment. In the preferred embodiment of the invention, the aerator and liquid-injection elements are attached to an internal concrete vibrator which penetrates and agitates the sediments. Air released from the aerator supplies oxygen to microorganisms in the sediments for the aerobic biodegradation of target substances. Liquids released under pressure from the liquid injector introduce microorganisms, nutrients or other chemicals such as oxidizers and detergents for degradation or solubilization of target substances.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: September 29, 1992
    Inventors: Paul E. Powell, Larry N. Britton