Patents by Inventor Derek L. A. Hand

Derek L. A. Hand 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).

  • Window Panel
    Patent number: 4817347
    Abstract: A lightweight impact-resistant window panel, for example for adhesive glazing to the airframe of an unpressurized aircraft, has outer and inner glass plies which are laminated with an intermediate impact-resistant plastics ply. An inner ply of impact-resistant plastics is bonded to the rearward face of the inner glass ply. The aggregate thickness of the impact-resistant plies is in the range from about 1 mm to about 7.5 mm.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: April 4, 1989
    Assignee: Pilkington Brothers P.L.C.
    Inventors: Derek L. A. Hand, Christopher W. G. Hall