Patents by Inventor Ludger Keweloh

Ludger Keweloh 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).

  • Method for producing homogeneously matted coatings by radiation curing
    Patent number: 9073082
    Abstract: The present invention relates to a method for producing matt and scratch-resistant coatings that takes place under exposure to actinic radiation on coating systems containing activated double bonds under radical polymerization.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: July 7, 2015
    Assignees: BASF Coatings GmbH, Allnex IP S.Á.R.L.
    Inventors: Wolfgang Fischer, Nusret Yuva, Ludger Keweloh, Antje Meier
  • Method For Producing Homogeneously Matted Coatings By Radiation Curing
    Publication number: 20140371384
    Abstract: The present invention relates to a method for producing matt and scratch-resistant coatings that takes place under exposure to actinic radiation on coating systems containing activated double bonds under radical polymerisation.
    Type: Application
    Filed: December 17, 2012
    Publication date: December 18, 2014
    Inventors: Wolfgang Fischer, Nusret Yuva, Ludger Keweloh, Antje Meier
  • 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