Patents by Inventor Carl-Henry Krill

Carl-Henry Krill 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).

  • Method in the manufacture of steam-cured light-weight aerated concrete with hydrophobic properties
    Patent number: 4329178
    Abstract: A method in the manufacture of steam-cured light-weight aerated concrete having hydrophobic properties, comprising preparing an aqueous expandable and solidifiable slurry, one or more hydraulic binders and one or more silica-containing materials casting the slurry in a mould; expanding and solidifying, and optionally cutting the solidified slurry; and steam-curing the resultant light-weight aerated concrete, wherein prior to casting said slurry it is admixed with silicone oil in a quantity of 0.05-0.50%, calculated on the dry weight of the starting mixture.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: May 11, 1982
    Assignee: Internationella Siporex Aktiebolag
    Inventors: Oystein Kalvenes, Carl-Henry Krill, Percy Svensson, Knut Helmersson