Patents by Inventor Robert A. Kunzi

Robert A. Kunzi 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).

  • Low temperature well cementing compositions and methods
    Patent number: 5447198
    Abstract: Improved hydraulic cement compositions and methods for cementing wells drilled through low temperature earth formations wherein the cement is subjected to freeze-thaw cycling are provided. The compositions are comprised of a hydraulic cement, gypsum cement, fly ash, an alkali metal halide, water, and an alcohol freezing point depressant.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: September 5, 1995
    Assignee: Halliburton Company
    Inventors: Robert A. Kunzi, Edward F. Vinson, Patty L. Totten, Bobby G. Brake
  • Low temperature well cementing compositions and methods
    Patent number: 5346550
    Abstract: Improved hydraulic cement compositions and methods for cementing wells drilled through low temperature earth formations wherein the cement is subjected to freeze-thaw cycling are provided. The compositions are comprised of a hydraulic cement, gypsum cement, fly ash, an alkali metal halide, water, and an alcohol freezing point depressant.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: September 13, 1994
    Assignee: Halliburton Company
    Inventors: Robert A. Kunzi, Edward F. Vinson, Patty L. Totten, Bobby G. Brake