Patents by Inventor Robert H. Buckman

Robert H. Buckman 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).

  • Oil recovery using a dimethylamide in a fluid carrier
    Patent number: 4268403
    Abstract: A method for recovering oil from an oil-bearing formation which comprises introducing into said formation to induce displacement of the oil contained therein, a fluid carrier containing from about 0.25 to about 100 parts by weight of a N,N-dimethylamide of a straight chain carboxylic acid per million parts of said fluid carrier, characterized in that said carboxylic acid contains from 12 to 18 carbon atoms. In addition, this invention encompasses the extraction of oil from mining oil sand operations which comprises the addition and then mixing into said sand to induce displacement of the oil contained thereon, a fluid carrier containing the N,N-dimethylamide.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: May 19, 1981
    Assignee: Buckman Laboratories, Inc.
    Inventors: Robert H. Buckman, Peter J. Young, Miguel L. Pulido
  • Water-soluble mixtures of quaternary ammonium polymers, nonionic and/or cationic vinyl-addition polymers, and nonionic and/or cationic surfactants
    Patent number: 4250269
    Abstract: Water-soluble polymeric mixtures prepared by mixing 1 to 10 parts by weight of a quaternary ammonium polymer with 0.5 to 7 parts by weight of a high molecular weight nonionic and/or cationic vinyl-addition polymer, and 0.1 to 5 parts by weight of a nonionic and/or cationic surfactant have utility in many diverse applications.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: February 10, 1981
    Assignee: Buckman Laboratories, Inc.
    Inventors: Robert H. Buckman, Philip M. Hoekstra, John D. Pera