Patents Assigned to WEYL GmbH
  • Patent number: 6506795
    Abstract: A chromium-free wood preservative consisting essentially of 1 to 35% by weight of a mixture of 25 to 75 parts by weight of a fatty amine ethoxylate and 75 to 25 parts by weight of at least one member of the group consisting of an unsaturated fatty acid of 3 to 25 carbon atoms and their copper and zinc salts and water.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: January 14, 2003
    Assignee: WEYL GmbH
    Inventors: Volker Barth, Helmut Hartner, Volker Beez