Patents by Inventor Roy G. Thompson

Roy G. Thompson 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).

  • Primary processing of laminated thermoplastic sheets
    Patent number: 5336526
    Abstract: In an on-line annealing process for rigid laminated sheets of reinforced thermoplastic material wherein an annealing chamber is maintained at a desired temperature by introducing heated air to impinge on a deflection plate within the annealing chamber, annealing of the thermoplastic sheets is improved by introducing heated air through a pair of elongated perforated tubes within the annealing chamber so that heated air is diffused so as to flow evenly across both sides of the rigid thermoplastic sheet as the sheet passes through the annealing chamber.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: August 9, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Kevin J. Spoo, Roy G. Thompson