Patents by Inventor Stephen J. Janovac

Stephen J. Janovac 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).

  • Multi-dimensional screen
    Patent number: 4491517
    Abstract: A screen (10) for separating particles according to size, being made up of a plurality of first straight wires (14) extending in one direction, and a plurality of alternating crimped second wires (12) extending in the same direction. A plurality of third straight wires (16) extend in the other direction, and are interwoven with each of the first and second wires. The first wires are 11/2 to 21/2 times the diameter of the second and third wires, which are of the same diameter.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: January 1, 1985
    Assignee: W. S. Tyler Incorporated
    Inventor: Stephen J. Janovac