Patents by Inventor Klaus-Peter Liebetanz

Klaus-Peter Liebetanz 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).

  • Patent number: 6515166
    Abstract: A vinyl ester produced by reacting at least one epoxide compound with at least on carboxylic anhydride, containing ethylenically unsaturated groups, the epoxide groups being substantially substituted by two vinyl ester groups.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: February 4, 2003
    Assignee: Bakelite AG
    Inventors: Ulrich Grundke, Klaus-Peter Liebetanz, Volker Kalla
  • Patent number: 6025438
    Abstract: A one-component thermosetting coating composition containing of one or more chemically setting binders, at least one curing or crosslinking agent, and one or more toughening substances, the composition being semisolid and tackfree at temperatures <50.degree. C., wherein the chemically setting binders have an average molecular weight (M.sub.w) of between 500 and 250,000, a melting point of more than 50.degree. C., a glass transition temperature of more than 20.degree. C. and cure fully at temperatures in the range from 80 to 250.degree. C.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: February 15, 2000
    Assignee: A. Raymond & Cie
    Inventors: Rudolf Hinterwaldner, Hans-Jurgen Lesser, Axel Bottcher, Ullrich Grundke, Klaus-Peter Liebetanz
  • Patent number: 5436279
    Abstract: A coating material crosslinkable by radiation comprising a) an olefinic unsaturated ester of an epoxy novolac resin, b) a binder formed by reaction of an epoxy compound having more than one epoxide group per molecule with at least one carboxylic acid in a molar ratio of epoxy groups per carboxyl group of 1:0.5 to 0.9 and subsequent reaction of the resulting reaction product with at least one unsaturated isocyanate ester formed by reaction of a compound with at least two isocyanate groups with a member of the group consisting of hydroxyl containing acrylic acid, methacrylic acid and cyanacrylic acid esters, c) at least one latent hardener, d) at least one photoinitiator e) 80-120% by weight of fillers and (f) additives, adjuvants and solvents and protective films formed with them.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: July 25, 1995
    Assignees: Rutgerswerke Aktingesellschaft, Lackwere Peters GmbH & Co. KG
    Inventors: Ulrich Grundke, Klaus-Peter Liebetanz, Achim Hansen, Jurgen Zehrfeld, Rainer Scharre, Werner Peters
  • Patent number: 5102702
    Abstract: Binder mixtures crosslinkable by radiation comprising as component A a product obtained by reaction of an epoxy compound with more than one epoxide group per molecule with at least one carboxylic acid in a molar ratio of epoxide groups to carboxyl groups of 1:0.5-0.9 and subsequent reaction of the reaction product with at least one unsaturated isocyanatocarbamate esters and as component B a product obtained by reaction of an epoxy compound with more than one epoxide group per molecule with at least one olefinic unsaturated carboxylic acid in a molar ratio of epoxide groups to carboxyl groups of 1:>>1 and subsequent reaction of the reaction product with at least one polybasic carboxylic acid or anhydride(s) thereof, components A and B being present in a weight ratio of 3:1 to 1:3 useful for the product of superior photo-resists and protective lacquers.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: April 7, 1992
    Assignee: Rutgerswerke AG
    Inventors: Ulrich Grundke, Klaus-Peter Liebetanz, Achim Hansen, Jurgen Zehrfeld