Patents by Inventor Joachim Duschek

Joachim Duschek 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).

  • Effect pigments
    Patent number: 9238739
    Abstract: The present invention relates to effect pigments based on coated, flake-form substrates, where an organic coating which contains fluoroalkyl groups and hydrophilic groups and is built up from at least one siloxane and/or at least one silane is applied to the substrate as outer layer.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: January 19, 2016
    Assignee: Merck Patent GmbH
    Inventors: Ulrich Schoenefeld, Joachim Duschek, Alfred Hennemann
  • EFFECT PIGMENTS
    Publication number: 20150166799
    Abstract: The present invention relates to effect pigments based on coated, flake-form substrates, where an organic coating which contains fluoroalkyl groups and hydrophilic groups and is built up from at least one siloxane and/or at least one silane is applied to the substrate as outer layer.
    Type: Application
    Filed: July 5, 2013
    Publication date: June 18, 2015
    Applicant: Merck Patent GmbH
    Inventors: Ulrich Schoenefeld, Joachim Duschek, Alfred Hennemann
  • Modified nacreous luster pigments for water paint systems
    Patent number: 6176918
    Abstract: Modified pearl luster pigments for waterborn coating systems, based on a platelet-form substrate coated with metal oxides and, located on the topmost metal oxide layer, a top layer consisting of at least two oxides and/or mixed oxides from the group consisting of silicon dioxide, aluminium oxide, cerium oxide, titanium oxide and zirconium oxide, and on a water-based oligomeric silane system. The oligomeric silane system can be described, for example, by the following approximate structure: [HO[Si(A)(OH)z(CH3)1−zO]a[Si(B)(OH)y(CH3)1−yO]b[Si(E)(OH)w(CH3)1−wO]c[Si(D)(OH)v(CH3)1−vO]dH].
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: January 23, 2001
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung and Huels AG
    Inventors: Ralf Glausch, Nicole Fornoff, Joachim Duschek, Burkhard Standke, Roland Edelmann
  • Pearlescent pigment for water-borne surface-coating systems
    Patent number: 5472491
    Abstract: A pearlescent pigment based on a metal oxide-coated, platelet-shaped substrate and a top layer on the metal oxide layer, where the top layer comprises silicon dioxide, at least one further metal hydroxide or metal oxide hydrate and at least one organic coupling reagent. The further metal hydroxides or metal oxide hydrates are hydroxides or oxide hydrates of cerium, aluminum or zirconium, or mixtures thereof. The coupling reagents employed are organofunctional silanes, zirconium aluminates or metal acid esters.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: December 5, 1995
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Joachim Duschek, Ralf Glausch
  • Pearlescent pigment for water-borne surface-coating systems
    Patent number: RE41858
    Abstract: A pearlescent pigment based on a metal oxide-coated, platelet-shaped substrate and a top layer on the metal oxide layer, where the top layer comprises silicon dioxide, at least one further metal hydroxide or metal oxide hydrate and at least one organic coupling reagent. The further metal hydroxides or metal oxide hydrates are hydroxides or oxide hydrates of cerium, aluminum or zirconium, or mixtures thereof. The coupling reagents employed are organofunctional silanes, zirconium aluminates or metal acid esters.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: October 26, 2010
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Joachim Duschek, Ralf Glausch