Patents by Inventor John T. Hoarty

John T. Hoarty 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).

  • Cement compositions
    Patent number: 5110362
    Abstract: Cement compositions containing fly ash having a carbon content are given satisfactory air entrainment by including a water soluble C8 fatty acid salt.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: May 5, 1992
    Inventors: John T. Hoarty, Leslie Hodgkinson, Michael J. Waddicor
  • Cementiferous composition and additives for use in such compositions
    Patent number: 5047087
    Abstract: The invention provides cost effective cementiferous compositions having superior flow characteristics imparted by the incorporation therein of a copolymer of an ethylenically polymerizable carboxylic acid, an alkyl ester of a ethylenically polymerizable carboxylic acid and, optionally, a third ethylenically unsaturated comonomer.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: September 10, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Peter G. Montague, Peter Bainbridge, John T. Hoarty
  • Cementiferous compositions
    Patent number: 4524163
    Abstract: This invention provides plasticizer additive compositions, for use in cementiferous compositions, which enhance the early gain of compressive strength. The plasticizer additive compositions comprise an aqueous solution of a copolymer or salt thereof, comprising an ethylenically unsaturated monomer having a hydroxyl functional group and an accelerator additive.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: June 18, 1985
    Assignee: Internationale Octrooi Maatschappij "Octropa" B.V.
    Inventors: Geoffrey Bradley, John T. Hoarty, Ian M. Howarth