Patents by Inventor George Z. Wu

George Z. Wu 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).

  • Process for the preparation of composite coatings with variable thickness
    Patent number: 5607726
    Abstract: Composite coatings are provided having a variable thickness and a coloration gradient in the cross-web direction using shims to direct flow in a premetered extrusion extrusion process and an edge band is used to provide stability to the bead. Further stability is provided by a vacuum gradient matched to the specific shim design used. The composite coatings are useful in preparing laminated structures such as automobile windshields with a gradient band.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: March 4, 1997
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: David K. Flattery, Thomas R. Phillips, George Z. Wu