Patents by Inventor Stephen P. Zawislak

Stephen P. Zawislak 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).

  • Composite yarn and method for making the same
    Patent number: 4698956
    Abstract: A continuous process of making a blended yarn of staple fiber and long-fiber or filamentary material in which the long-fiber or filamentary material is passed through a rupture zone to produce lengths thereof which are fed directly into an air stream with the staple fibers to produce an intimate blend which is conveyed by the air stream directly to an open end spinning device which produces the yarn.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: October 13, 1987
    Assignee: Gentex Corporation
    Inventors: Steven R. Clarke, John B. Price, Robert A. Sallavanti, Stephen P. Zawislak