Patents by Inventor Roderic S. Lakes

Roderic S. Lakes 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).

  • Polyhedron cell structure and method of making same
    Patent number: 4668557
    Abstract: An open cell foam structure that has a negative Poisson's ratio. Structure can be created by triaxially compressing a conventional open-cell foam material and heating the compressed structure beyond the softening point to produce a permanent deformation in the structure of the material. The structure thus produced has cells whose ribs protrude into the cell resulting in unique properties for materials of this type.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: May 26, 1987
    Assignee: The University of Iowa Research Foundation
    Inventor: Roderic S. Lakes