Patents by Inventor Hans-Jurgen Hartrumpf

Hans-Jurgen Hartrumpf 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).

  • Aqueous pigment preparations for brilliant ink jet prints
    Publication number: 20060189713
    Abstract: Aqueous pigment preparations comprising a) at least one pigment b) at least one polymeric carboxylic acid comprising interpolymerized alkoxylated or nonalkoxylated alpha-hydroxy-C1-C6-alkyl-acrylic acid units and at least one component c) and/or d), of which c) is a surfactant which is nonionic and/or anionic, and d) is a condensation product based on A) sulphonated aromatics B) aldehydes and/or ketones and if appropriate C) one or more compounds selected from the group of nonsulphonated aromatics, urea and urea derivatives.
    Type: Application
    Filed: February 13, 2006
    Publication date: August 24, 2006
    Inventors: Udo Herrmann, Dirk Pfuetzenreuter, Hans-Jurgen Hartrumpf, Josef Witt, Daniela Gesekus, Gudrun-Margot Goldau
  • Alkoxylated polyalkyleneimines having anionic groups and their use
    Publication number: 20050155521
    Abstract: Polyalkylenepolyimines having alkoxy units and anionic groups, especially those from the group consisting of —COO?, —SO394 , —OSO3?, —PO32? and —P(OR)O2?, where R represents hydrogen or optionally substituted alky, cycloalkyl or aryl.
    Type: Application
    Filed: November 24, 2004
    Publication date: July 21, 2005
    Inventors: Udo Herrmann, Dirk Pfuetzenreuter, Helmut-Martin Meier, Josef Witt, Hans-Jurgen Hartrumpf, Daniela Gesekus, Gudrun-Margot Goldau
  • Pigment preparations
    Patent number: 6881255
    Abstract: Pigment preparations comprising a) at least one pigment, b) at least one polyethyleneimine which is alkoxylated, especially ethoxylated and propoxylated and/or butoxylated, and c) at least one condensation product based on A) sulphonated aromatics, B) aldehydes and/or ketones and optionally C) one or more compounds selected from the group consisting of nonsulphonated aromatics, urea and urea derivatives.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: April 19, 2005
    Assignee: Bayer Chemicals AG
    Inventors: Udo Herrmann, Dirk Pfützenreuter, Josef Witt, Hans-Jürgen Hartrumpf
  • Pigment preparations
    Publication number: 20040176499
    Abstract: Pigment preparations comprising
    Type: Application
    Filed: March 3, 2004
    Publication date: September 9, 2004
    Inventors: Udo Herrmann, Dirk Pfutzenreuter, Josef Witt, Hans-Jurgen Hartrumpf