Patents by Inventor Bernhard Köster

Bernhard Köster 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).

  • Coating agent, process for producing the same and its use, in particular for lacquering the outside of packages
    Patent number: 6168865
    Abstract: The present invention relates to a coating composition comprising one or more hydroxyl-containing, modified or nonmodified polyesters and one or more hydroxyl-reactive crosslinkers, characterized in that the coating composition comprises as binder a mixture of A1) from 35 to 95% by weight of one or more hydroxyl-containing polyesters (A1) having an OH number of from 15 to 210 mg of KOH/g, an acid number of from 10 to 120 mg of KOH/g and a number-average molecular weight of from 500 to 6,000 g/mol, A2) from 2 to 50% by weight of one or more water-thinnable, modified epoxy resin esters (A2), and A3) from 0 to 20% by weight of one or more water-thinnable, hydroxyl-containing, epoxy resin-modified alkyd resins (A3), the sum of the proportions by weight of components (A1) to (A3) being in each case 100% by weight and the proportions by weight being based in each case on the solids content of the binders (A1) to (A3).
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: January 2, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Bernhard Köster, Ludger Keweloh, Jörg Kipp, Lazaros Vogdanis, Dietmar Chmielewski
  • Plastisols which prevent the yellowing of top coats, process for their preparation and use
    Patent number: 5475056
    Abstract: The invention relates to plastisols which prevent a yellowing of top coats applied thereon, to a process for their preparation and to their use. The plastisols based on PVC or methacryl contain, in addition to basic adhesion promoters, aldehydes, ketones, their derivatives, oligomers or mixtures of same.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: December 12, 1995
    Assignee: Teroson GmbH
    Inventors: Bernhard Koesters, Xaver Muenz, Manfred Asang