Patents by Inventor Stanislaus J. Laiewski

Stanislaus J. Laiewski 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).

  • Method and apparatus for manufacturing a purge trap tray
    Patent number: 4552600
    Abstract: The present invention is directed to a method and apparatus for manufacturing a tray having an integral purge juice trap. A particularly important step in the method is adhering a border area of a perforated thermoplastic sheet to a raised shoulder area of a tray. Preferably, this step is accomplished simultaneously with the step of perforating the thermoplastic sheet. A preferred method for adhering the border area to the shoulder area is heat sealing.
    Type: Grant
    Filed: November 23, 1982
    Date of Patent: November 12, 1985
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Stanislaus J. Laiewski, Thomas A. Hessen, Thomas R. Hardy, Allie F. Gilvin