Patents by Inventor D. Brian W. Yawney

D. Brian W. Yawney 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).

  • Coated soft copolymers suitable for bulk shipment and storage
    Patent number: 5695881
    Abstract: Soft copolymer compositions in pellet form comprise said polymer pellets coated with a wax-based emulsion of N,N'-ethylenebisoleamide. The coated pellet has antiblock characteristics which allow bulk shipment and storage of soft polymers without the pellets agglomerating into an unmanageable mass. Less N,N'-ethylenebisoleamide is required to provide equivalent antiblock characteristics as compared to soft copolymer compounds in pellet from containing N,N'-ethylenebisoleamide throughout the pellet.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: December 9, 1997
    Assignee: AT Plastics Inc.
    Inventors: Alex M. Henderson, Miriam Stanisavljevic, D. Brian W. Yawney
  • Heat shrinkable protective sheets and methods for their manufacture
    Patent number: 5134000
    Abstract: A heat shrinkable wrap-around sleeve comprises a heat shrinkable sheet with a heat stable strip welded on one end. The free end of the heat stable strip is overlapped on the outer side of the opposite end of the sheet and welded thereto by heating applied directly on the outer side. This allows a good quality welded connection to be formed without requiring the use of hold-down adhesives. The sleeve can be manufactured using induction welding or more preferably by heated wedged welding.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: July 28, 1992
    Assignee: Shaw Industries Ltd.
    Inventors: James L. Smythe, D. Brian W. Yawney, John H. Oliver, Peter Jackson