Patents by Inventor Gerard Lezier

Gerard Lezier 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).

  • Molding device having heat transfer chambers insulated from each other for molding expandable thermoplastic resin particles
    Patent number: 4192638
    Abstract: A mold for polystyrene has two spaced dies receiving the polystyrene therebetween. The wall of each die has two superposed independent chambers, one a heating chamber and the other a cooling chamber adjacent the die surface. Passages from the heating chamber pass through the cooling chamber and through the die surface and do not communicate with the cooling chamber. The opening of the passages in the die surface may be partially closed by nozzles.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: March 11, 1980
    Inventors: Gerard Lezier, Bernard Vasseur