Patents by Inventor ELLEN STEVENS

ELLEN STEVENS 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).

  • FAILURE AVOIDANCE EFFECTIVE SILT FENCE
    Publication number: 20080157044
    Abstract: A silt fence structure and method of controlling erosion are disclosed. The silt fence structure includes a water permeable fence, an apron having first and second edges, the first edge providing a buried apron toe, the second edge attaching to the water permeable fence, and at least one flow barrier attached to the water permeable fence and to the apron so as to impede lateral runoff flow along the water permeable fence.
    Type: Application
    Filed: October 16, 2007
    Publication date: July 3, 2008
    Applicant: THE BOARD OF REGENTS FOR OKLAHOMA STATE UNIVERSITY
    Inventors: BILLY J. BARFIELD, KHALED A.M. GASEM, SANDEEP YERI, ELLEN STEVENS, JOHN C. HAYES