Patents by Inventor Willi Rauschmann

Willi Rauschmann 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 the production of pure C.I. pigment orange 74
    Patent number: 8329369
    Abstract: The invention relates to a method for conditioning and purifying pigment orange 74. The method is characterized in that the aqueous suspension of the raw pigment, optionally after adding an organic solvent from the group comprising isobutanol, chlorobenzene and o-dichlorobenzene, is subjected to a finishing treatment, the organic solvent is optionally removed using a distillation process, the remaining aqueous pigment suspension is mixed with a non-ionic surfactant and is heated to a temperature ranging from 30 to 100° C. and the pigment is then filtered off.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: December 11, 2012
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Thomas Hundsdorf, Willi Rauschmann
  • Method for the Production of Pure C.I. Pigment Orange 74
    Publication number: 20100178607
    Abstract: The invention relates to a method for conditioning and purifying pigment orange 74. The method is characterized in that the aqueous suspension of the raw pigment, optionally after adding an organic solvent from the group comprising isobutanol, chlorobenzene and o-dichlorobenzene, is subjected to a finishing treatment, the organic solvent is optionally removed using a distillation process, the remaining aqueous pigment suspension is mixed with a non-ionic surfactant and is heated to a temperature ranging from 30 to 100° C. and the pigment is then filtered off.
    Type: Application
    Filed: May 21, 2008
    Publication date: July 15, 2010
    Applicant: CLARIANT FINANCE (BVI) LIMITED
    Inventors: Thomas Hundsdorf, Willi Rauschmann
  • Dye composition for dyeing powder coatings
    Patent number: 7241822
    Abstract: The invention relates to a powdery dye composition consisting essentially of C.I. Pigment Red 170 (C.I. No. 12475) and barium sulfate, wherein the barium sulfate is added before or during the production process of the C.I. Pigment Red 170. The inventive addition of barium sulfate enables non-homogeneities and caking to be avoided in the mixture.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: July 10, 2007
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Felix W. Grimm, Klaus Kund, Wolfgang Winter, Willi Rauschmann, Bernd Nestler
  • Dye composition and the use of the same for dyeing powder coatings
    Publication number: 20050004291
    Abstract: The invention relates to a powdery dye composition consisting essentially of C.I. Pigment Red 170 (C.I. No. 12475) and barium sulfate, said barium sulfate being added before or during the production process of the C.I. Pigment Red 170. The inventive addition of barium sulfate enables non-homogeneities and caking to be avoided in the mixer.
    Type: Application
    Filed: August 1, 2002
    Publication date: January 6, 2005
    Inventors: Felix Grimm, Klaus Kund, Wolfgang Winter, Willi Rauschmann, Bernd Nestler