Patents by Inventor Donald H. Ferr

Donald H. Ferr 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).

  • Micellar flooding process
    Patent number: 4036300
    Abstract: A process for the recovery of petroleum from a subterranean formation by the injection of a micellar displacement system consisting of a micellar solution and aqueous phase including the ammonium or alkali metal salt of an aminopolycarboxylic acid as a chelating agent. The chelating agent is present in concentrations in excess of the stoichiometric amount required to chelate the multivalent ion of the aqueous phase.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: July 19, 1977
    Assignee: Union Oil Company of California
    Inventors: LeRoy W. Holm, Donald H. Ferr