Patents by Inventor Alan Phillipson

Alan Phillipson 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).

  • Manufacture of contoured records
    Patent number: 4032610
    Abstract: A method of making disc records, particularly video discs from thermoplastic sheet material. In a press a thin flexible matrix is disposed between the sheet, which is backed by a resilient cushion, and a flexible diaphragm which constitutes a wall of a hydraulic pressure chamber.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: June 28, 1977
    Assignee: Decca Limited
    Inventors: Basil Harry Royston Spiller, Alan Phillipson