Patents by Inventor Pepi Peev

Pepi Peev 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).

  • Admixture for producing cementitious compositions having good fluidity and high early compressive strength
    Patent number: 6767399
    Abstract: The present invention is an admixture for cementitious compositions that provides both good flowability and high early strength as is desired in the art. The admixture of the invention includes a superplasticizer comprising a water-soluble modified acrylic copolymer and at least one accelerant selected from the group consisting of salts of thiocyanic acid, water-soluble alkanolamines, ethylene oxide adducts of ethylenediamine, and morpholine derivatives. The combination of the superplasticizer and the accelerant used in the invention surprisingly has a synergistic effect on the early compressive strength of the cementitious composition and also enhances the W/CM ratio and the flowability of the cementitious composition.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: July 27, 2004
    Assignee: The Euclid Chemical Company
    Inventors: Pepi Peev, Russell L. Hill
  • Admixture for producing cementitious compositions having good fluidity and high early compressive strength
    Publication number: 20030167973
    Abstract: The present invention is an admixture for cementitious compositions that provides both good flowability and high early strength as is desired in the art. The admixture of the invention includes a superplasticizer comprising a water-soluble modified acrylic copolymer and at least one accelerant selected from the group consisting of salts of thiocyanic acid, water-soluble alkanolamines, ethylene oxide adducts of ethylenediamine, and morpholine derivatives. The combination of the superplasticizer and the accelerant used in the invention surprisingly has a synergistic effect on the early compressive strength of the cementitious composition and also enhances the W/CM ratio and the flowability of the cementitious composition.
    Type: Application
    Filed: December 3, 2002
    Publication date: September 11, 2003
    Applicant: Boral Material Technologies, Inc.
    Inventors: Pepi Peev, Russell L. Hill