Patents by Inventor Hans-Jürgen Gawin

Hans-Jürgen Gawin 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: 7022778
    Abstract: The invention relates to coating compositions comprising: A) at least one low molecular weight reactive compound with a molecular weight (Mn) of 300–1,500 g/mol, preferably of 300–1,200 g/mol, with at least one secondary and/or tertiary amino group and at least two hydroxyl groups per molecule, which compound is obtained by reacting A1) at least one hydroxyalkyl ester of an olefinically unsaturated carboxylic acid with 2–12 C atoms in the hydroxyalkyl residue with A2) at least one lactone and with A3) at least one hydroxy-functional alkyl-, cycloalkyl- and/or alkoxyamine with at least one primary and/or secondary amino group per molecule and with 2–10 C atoms per molecule, B) at least one cross-linking agent with functional groups reactive towards active hydrogen and optionally, C) at least one binder with functional groups containing active hydrogen.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: April 4, 2006
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Gerhard Bremer, Hans-Juergen Gawin, Hermann Kerber
  • Publication number: 20040157995
    Abstract: The invention relates to coating compositions comprising:
    Type: Application
    Filed: November 18, 2003
    Publication date: August 12, 2004
    Inventors: Gerhard Bremer, Hans-Juergen Gawin, Hermann Kerber
  • Patent number: 6555176
    Abstract: Coating composition containing a binder/crosslinking agent system, organic solvents, optionally together with pigments and/or extenders and conventional lacquer additives, wherein the binder/crosslinking agent system contains A) 20 to 80 wt. % of carboxy-functional (meth)acrylic copolymers and/or polyesters which are dissolved in the continuous phase of the coating composition, with an acid value of 15 to 300 mg of KOH/g, B) 80 to 20 wt.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: April 29, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralf Dahm, Carmen Flosbach, Hans-Jürgen Gawin, Hermann Kerber, Apostolos Manassis, Volker Paschmann, Walter Schubert