Patents by Inventor Hendrik DIRKSWAGER

Hendrik DIRKSWAGER 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).

  • Method for predicting the optimal salinity of internal olefin sulfonate compositions
    Patent number: 10144863
    Abstract: The present invention provides a method for predicting the optimal salinity of individual members of a class of internal olefin sulfonate compositions in a mixture containing the individual member, a brine and hydrocarbons, wherein the internal olefin sulfonate compositions comprise a mixture containing hydroxy alkane sulfonates and alkene sulfonates. The invention further provides use of the weight ratio of hydroxy alkane sulfonates to alkene sulfonates in an internal olefin sulfonate composition to predict the optimal salinity of the surfactant composition in a mixture of the surfactant composition, a brine and an oil.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: December 4, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Julian Richard Barnes, Hendrik Dirkswager, Carmen Geraldine Reznik, Sonja Geib, Sjoerd Reindert Van Kuijk, James Laurel Buechele
  • METHOD FOR PREDICTING THE OPTIMAL SALINITY OF INTERNAL OLEFIN SULFONATE COMPOSITIONS
    Publication number: 20170183559
    Abstract: The present invention provides a method for predicting the optimal salinity of individual members of a class of internal olefin sulfonate compositions in a mixture containing the individual member, a brine and hydrocarbons, wherein the internal olefin sulfonate compositions comprise a mixture containing hydroxy alkane sulfonates and alkene sulfonates. The invention further provides use of the weight ratio of hydroxy alkane sulfonates to alkene sulfonates in an internal olefin sulfonate composition to predict the optimal salinity of the surfactant composition in a mixture of the surfactant composition, a brine and an oil.
    Type: Application
    Filed: May 21, 2015
    Publication date: June 29, 2017
    Inventors: Julian Richard BARNES, Hendrik DIRKSWAGER, Carmen Geraldine REZNIK, Sonja GEIB, Sjoerd Reindert VAN KUIJK, James Laurel BUECHELE