Patents by Inventor Karl Lampatzer

Karl Lampatzer 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).

  • Chromium-free surface treatment
    Patent number: 4264378
    Abstract: A chromium-free process for phosphatizing a metal surface provides for applying to the surface an aqueous acidic solution having pH 1.5 to 3.0 and containing phosphate; a metal cation of valence two or greater; molybdate, tungstate, vanadate, niobate or tantalate ions; and drying the solution on the surface without rinsing.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: April 28, 1981
    Assignee: Oxy Metal Industries Corporation
    Inventors: Dieter Oppen, Karl Lampatzer
  • Method for the surface treatment of metals
    Patent number: 4169741
    Abstract: An aqueous acidic composition free of hexavalent chromium is employed to treat a metal surface. The composition contains trivalent chromium, phosphate ion and dispersed silica.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: October 2, 1979
    Assignee: Oxy Metal Industries Corporation
    Inventors: Karl Lampatzer, Werner Rausch