Patents by Inventor Loren F. Lafreniere

Loren F. Lafreniere 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).

  • Windowed folding cartons
    Patent number: 5160083
    Abstract: A windowed paperboard carton having a window aperture extending across two or three major wall panels, which aperture is closed by a clear plastic sheet. The plastic is adhered to the carton in selected areas but not in zones of articulation where the window goes around the corner of the carton. Special elongated slots are disposed along the lines of articulation of the plastic sheet and paperboard in non-adhesive areas to eliminate deleterious stress concentrations in the composite paperboard-plastic sheet blank.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: November 3, 1992
    Assignee: Rexham Corporation
    Inventor: Loren F. Lafreniere