Patents by Inventor Bruce B. Boardman

Bruce B. Boardman 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).

  • Rotary thermoforming process and apparatus
    Patent number: 4244915
    Abstract: The invention is a process and apparatus for continuously thermoforming plastic containers wherein opposed co-rotating discs process a molten sheet of thermoplastic material having a wedge-shaped cross-section, said discs transporting said thermoplastic material through a plug-assisted pressure and/or vacuum forming station, a shear station and a part removal station.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: January 13, 1981
    Assignee: Hercules Incorporated
    Inventor: Bruce B. Boardman