Patents by Inventor Howard Stevenson

Howard Stevenson 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).

  • Large hydrophobe surfactants
    Patent number: 9988346
    Abstract: Provided herein are inter alia novel compositions and methods having application in the field of enhanced oil recovery. In particular, the large hydrophobe compounds and mixtures thereof presented herein can be used, inter alia, for the recovery of a large range of crude oil compositions from challenging reservoirs.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: June 5, 2018
    Assignees: Board of Regents, The University of Texas System, Harcros Chemicals, Inc.
    Inventors: Upali P. Weerasooriya, Gary A. Pope, Peter Radford, Howard Stevenson
  • LARGE HYDROPHOBE SURFACTANTS
    Publication number: 20170334840
    Abstract: Provided herein are inter alia novel compositions and methods having application in the field of enhanced oil recovery. In particular, the large hydrophobe compounds and mixtures thereof presented herein can be used, inter alia, for the recovery of a large range of crude oil compositions from challenging reservoirs.
    Type: Application
    Filed: April 17, 2012
    Publication date: November 23, 2017
    Inventors: Upali P. Weerasooriya, Gary A. Pope, Peter Radford, Howard Stevenson
  • Process for making fatty amides
    Patent number: 9266821
    Abstract: A process for reacting, in the presence of a particular calcium containing catalyst, an amine having an active hydrogen and one or more of a fatty acid ester or a fatty acid.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: February 23, 2016
    Assignee: HARCROS CHEMICALS INC.
    Inventors: Upali Weerasooriya, John Boorem, Brian Hodle, Aaron Boorem, Peter Radford, Howard Stevenson, G. Gerald Barr
  • Process For Making Fatty Amides
    Publication number: 20110092715
    Abstract: A process for reacting, in the presence of a particular calcium containing catalyst, an amine having an active hydrogen and one or more of a fatty acid ester or a fatty acid.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 21, 2011
    Inventors: Upali Weerasooriya, John Boorem, Brian Hodle, Aaron Boorem, Peter Radford, Howard Stevenson, G. Gerald Barr