Patents by Inventor Ernst U. Bruns

Ernst U. Bruns 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).

  • Dual-ovenable food trays with textured surface
    Patent number: 4933216
    Abstract: A synthetic polymeric food tray having a surface with a pebbled texture, the indentations in the texture being at least 75 micrometers deep, the distances from the center of one pebble to another adjacent pebble being from 0.5 to 3.0 mm, and the surfaces of the pebbles being parallel to the general contour of the surface of the tray in the vicinity of the pebble being substantially flat or slightly rounded, exhibits reduced swarf formation.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: June 12, 1990
    Assignee: Du Pont Canada, Inc.
    Inventors: William C. Filbert, Ernst U. Bruns