Patents by Inventor Egon Wegner

Egon Wegner 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).

  • Process for the production of a multicoat protective and/or decorative finish
    Patent number: 5368944
    Abstract: The invention relates to a process for the production of multicoat finishes, in which(1) an aqueous pigmented basecoat containing a waterthinnable polyurethane resin is applied to the substrate surface as basecoat,(2) a polymer film is formed from the coating applied in stage (1),(3) a transparent topcoat is applied to the basecoat obtained in this way and subsequently(4) the basecoat is baked together with the topcoat, and the water-thinnable polyurethane resin contains structural units of the formula ##STR1## X representing a divalent aromatic hydrocarbon radical and R.sup.1 and R.sup.2 representing an alkyl radical having 1 to 4 carbon atoms.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: November 29, 1994
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Michael Hartung, Walter Lassmann, Ulrich Poth, Egon Wegner