Patents by Inventor Horst Kleinhenz

Horst Kleinhenz 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).

  • Process for the production of modified carbon black
    Patent number: 6780389
    Abstract: A process for the production of modified carbon black, in which a carbon black dispersion containing carbon black, water and wetting agent, is mixed with an acid, aqueous solution or suspension of a primary amine and then reacted with sodium nitrite solution.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: August 24, 2004
    Assignee: Degussa AG
    Inventors: Alfons Karl, Ralph McIntosh, Werner Kalbitz, Horst Kleinhenz, Gerd Tauber, Stephan Luedtke
  • Aqueous carbon black dispersions
    Patent number: 6685769
    Abstract: Aqueous carbon black dispersions contain carbon black and cationic and non-ionic surfactants in addition to water. The dispersions are produced by dispersing the carbon black and the other components in water with bead mills, ultrasonic mills or an Ultra Turrax mixer. The dispersions can be used to produce inks, lacquers and printing inks.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 3, 2004
    Assignee: Degussa-Huls AG
    Inventors: Alfons Karl, Horst Kleinhenz, Werner Kalbitz, Gerd Tauber, Andreas Stübbe, Johann Mathias
  • Process for the production of modified carbon black
    Publication number: 20040018140
    Abstract: A process for the production of modified carbon black, in which a carbon black dispersion containing carbon black, water and wetting agent, is mixed with an acid, aqueous solution or suspension of a primary amine and then reacted with sodium nitrite solution.
    Type: Application
    Filed: July 25, 2002
    Publication date: January 29, 2004
    Applicant: DEGUSSA AG
    Inventors: Alfons Karl, Ralph McIntosh, Werner Kalbitz, Horst Kleinhenz, Gerg Tauber, Stephan Luedtke
  • Pigment preparations, a process for preparing pigment preparations and use thereof
    Patent number: 6569231
    Abstract: A pigment preparation, containing a pigment and/or carbon black and a polymer and/or a surfactant selected from the group of cross-linked polyoxyethyleneacrylic acid, fatty alcohol polyglycol ethers, polyvinylpyrrolidone, alcohol alkoxylates, lignin sulfonates, alkylphenol polyglycol ethers, naphthalene sulfonic acid derivatives or mixtures thereof which is prepared from an aqueous dispersion by freeze-drying. The pigment preparation can be used for coloring purposes and/or to provide antistatic characteristics in water-based coloring and lacquer systems, disperse dyes, printing inks, inking systems and coating systems.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: May 27, 2003
    Assignee: Degussa AG
    Inventors: Johann Mathias, Horst Kleinhenz, Alfons Karl, Gerd Tauber
  • Inkjet ink
    Publication number: 20030041777
    Abstract: The inkjet ink contains at least one pigment and at least one compound having a mean particle size of greater than 50 nm from the group comprising pyrogenic silicic acid, hydrophobised pyrogenic silicic acid, pyrogenic mixed oxides or pyrogenic aluminium oxides.
    Type: Application
    Filed: April 5, 2002
    Publication date: March 6, 2003
    Inventors: Alfons Karl, Gerd Tauber, Werner Kalbitz, Horst Kleinhenz, Ralph McIntosh, Stephan Ludtke
  • Aqueous carbon black dispersions
    Patent number: 6503311
    Abstract: Aqueous carbon black dispersions, wherein the carbon black dispersions contain no wetting agent and contain at least one ozone-oxidized carbon black. The dispersions are produced by dispersing ozone-oxidized carbon black and other constituents in water. The dispersions may be used for the production of inks, printing inks and water-based lacquer systems.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: January 7, 2003
    Assignee: Degussa AG
    Inventors: Alfons Karl, Werner Kalbitz, Horst Kleinhenz, Gerd Tauber
  • Aqueous carbon black dispersions
    Patent number: 6451100
    Abstract: Aqueous carbon black dispersions contain carbon black and cationic surfactants in addition to water. The aqueous carbon black dispersions are produced by dispersing the carbon black and other components in water with bead mills, ultrasonic mills or an Ultra Turrax mixer. The dispersions can be used to produce inks, lacquers and printing inks.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: September 17, 2002
    Assignee: Degussa-Huls AG
    Inventors: Alfons Karl, Horst Kleinhenz, Werner Kalbitz, Johann Mathias, Gerd Tauber, Andreas Stübbe
  • Aqueous carbon black dispersions
    Patent number: 6171382
    Abstract: Aqueous carbon black dispersions contain carbon black and surfactants, in addition to water. The dispersions are produced by dispersing the carbon black and the other constituents in water, using bead mills, ultrasonic mills and/or an ultra-turrax. The aqueous carbon black dispersions can be used to produce printing inks such as ink-jet inks or writing inks.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: January 9, 2001
    Assignee: Degussa-Huls AG
    Inventors: Andreas St{umlaut over (u)}bbe, Horst Kleinhenz, J{umlaut over (u)}rgen Leimann, Alfons Karl