Patents by Inventor Bert Carl Wong

Bert Carl Wong 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).

  • Shaped interlayers for head-up display windshields and process for preparing the same
    Patent number: 5639538
    Abstract: A self-supporting adhesive sheeting material useful in making blanks for laminated windows comprises a continuous web (10) which has a uniform thickness profile (A, B) across at least 20% of its area extending from each edge of the web and a wedge-shaped thickness profile (C, D) which decreases in thickness from the area of uniform thickness to the center of the web, and a process comprising extruding an adhesive composition through an adjustable extrusion die to provide a continuous self-supporting web having a uniform thickness profile across at least 20% of the area of the web extending inwardly from each edge of the web and a wedge-shaped thickness profile decreasing in thickness from the area of uniform thickness to the center of the web, quenching the web, slitting the web along its mid-point, and winding the slit web onto separate rolls.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: June 17, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bert Carl Wong