Patents by Inventor Karl I. Larrson

Karl I. Larrson 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).

  • Patent number: 4315761
    Abstract: The object of the invention is to use a finely divided calcium hydrosilicate material, in particular aerated or foamed concrete, as a substance for binding and clearing of urine and excrements of the kind excreted for instance by our pet animals. This material gives rapid and effective drying of the excrements, which, particularly if the material is combined with gypsum as a bond-improving agent, become extremely easy to remove or clear.
    Type: Grant
    Filed: November 15, 1979
    Date of Patent: February 16, 1982
    Inventors: Karl I. Larrson, Per A. H. Jakobsson