Patents by Inventor Nils L. Larson

Nils L. Larson 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).

  • Structural building element
    Patent number: 4288955
    Abstract: A structural building element in the form of a panel, block or related configuration having a continuous phase of cementitious material which includes an interconnected matrix having a first density and a plurality of zones dispersed within the matrix, wherein the zones have a second density lower than the first density. Reinforcement members may be embedded within portions of the interconnected matrix to impart additional strength to the element.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: September 15, 1981
    Inventors: Carl C. Hiatt, Nils L. Larson