Patents by Inventor Erwin Bretz

Erwin Bretz 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 of producing a structural panel and panel produced by the method
    Patent number: 4973508
    Abstract: A structural panel, for example for forming interior aircraft cabin walls, has a lightweight composite panel substrate, an aluminum sheet, adhesively bonded to the substrate, and a desired visual image or attractive colored pattern on the visible surface of the aluminum sheet. The panel is produced by first cleaning the substrate surface to be decorated; applying an adhesive layer (5) to the cleaned surface; adhering or pressing an aluminum sheet (6) onto the adhesive layer (5); curing the adhesive layer (5); cleaning the aluminum sheet (6); applying and curing a base coat layer (7); and applying a number of colored layers (8) to produce the desired visual image or pattern.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: November 27, 1990
    Assignee: Messerschmitt-Boelkow-Blohm GmbH
    Inventor: Erwin Bretz