Patents Examined by John J Fugueroa
  • Nonionic surfactants for enhanced crude oil recovery
    Patent number: 9874079
    Abstract: The present disclosure provides methods of using a nonionic surfactant for enhanced oil recovery, where the nonionic surfactant is prepared with a double metal cyanide catalyst. The present disclosure also provides for an emulsion that includes carbon dioxide, a diluent and the nonionic surfactant.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: January 23, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Aaron W. Sanders, Sayeed Abbas, Shawn Maynard, Matthew Miller