Patents by Inventor Dee Harkey

Dee Harkey 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).

  • Copolymers useful for gelling acids
    Patent number: 6855672
    Abstract: Disclosed is a copolymer useful for preparing acid gels comprising a copolymer having a copolymer backbone, the copolymer having a general formula: wherein: (a) A is an H or other terminating group; (b) R1 is an OH or NH2; (c) R2 is an O or NH; (d) Z is an integer having a value of from 1 to 4; (e) X and Y are present in a ratio (X:Y) of from 3:2 to 4:1; (f) structures I and II are present as blocks or randomly distributed along the copolymer backbone; and wherein the copolymer has a molecular weight of from about 1,000,000 to about 10,000,000.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: February 15, 2005
    Assignee: Baker Hughes Incorporated
    Inventors: David J. Poelker, JoAnn McMahon, Dee Harkey
  • Copolymers useful for gelling acids
    Publication number: 20030104948
    Abstract: Disclosed is a copolymer useful for preparing acid gels comprising a copolymer having a copolymer backbone, the copolymer having a general formula: 1
    Type: Application
    Filed: November 7, 2001
    Publication date: June 5, 2003
    Applicant: Baker Hughes Incorporated
    Inventors: David J. Poelker, JoAnn McMahon, Dee Harkey