Patents by Inventor Henry George Schirmer

Henry George Schirmer 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).

  • Polyamide film laminate with entrapped liquid
    Patent number: 3955040
    Abstract: In coextruded or extrusion coated, laminated, polymeric films which have been stretched by the inflated bubble technique, liquid can be entrapped between the collapsed bubble walls and can migrate to an interior layer of the laminate to treat same when the layer adjacent to the entrapped liquid is liquid permeable. For example, in a polyethylene/nylon/ethylene vinyl acetate/entrapped water/ethylene vinyl acetate/nylon/polyethylene laminated film the entrapped water will diffuse through the ethylene vinyl acetate layers to keep the nylon layers plasticized and impact resisitant.
    Type: Grant
    Filed: May 24, 1974
    Date of Patent: May 4, 1976
    Assignee: W. R. Grace & Co.
    Inventor: Henry George Schirmer