Patents by Inventor Jurgen Kischkewitz

Jurgen Kischkewitz 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).

  • Red iron-oxide pigments with improved colour values
    Patent number: 10563066
    Abstract: The present invention relates to iron oxide red pigments having improved color values, a process for producing these improved iron oxide red pigments by the Penniman red process using nitrate (also referred to as nitrate process or direct red process) and an apparatus for the production thereof.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: February 18, 2020
    Assignee: LANXESS Deutschland GmbH
    Inventors: Waldemar Czaplik, Jurgen Kischkewitz, Stephan Spiegelhauer
  • Preparation of iron (III) oxide pigment
    Patent number: 10479893
    Abstract: The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process).
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: November 19, 2019
    Assignee: LANXESS Deutschland GmbH
    Inventors: Waldemar Czaplik, Guido Ketteler, Jurgen Kischkewitz
  • PREPARATION OF IRON (III) OXIDE PIGMENT
    Publication number: 20170292024
    Abstract: The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process).
    Type: Application
    Filed: September 4, 2015
    Publication date: October 12, 2017
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: WALDEMAR CZAPLIK, GUIDO KETTELER, JURGEN KISCHKEWITZ
  • PREPARATION OF IRON (III) OXIDE PIGMENTS
    Publication number: 20170267544
    Abstract: The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process).
    Type: Application
    Filed: September 4, 2015
    Publication date: September 21, 2017
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: WALDEMAR CZAPLIK, GUIDO KETTELER, JURGEN KISCHKEWITZ
  • RED IRON-OXIDE PIGMENTS WITH IMPROVED COLOUR VALUES
    Publication number: 20170253745
    Abstract: The present invention relates to iron oxide red pigments having improved color values, a process for producing these improved iron oxide red pigments by the Penniman red process using nitrate (also referred to as nitrate process or direct red process) and an apparatus for the production thereof.
    Type: Application
    Filed: September 10, 2015
    Publication date: September 7, 2017
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: WALDEMAR CZAPLIK, JURGEN KISCHKEWITZ, STEPHAN SPIEGELHAUER
  • Oil- and wax-containing compositions in piece form for the coloring of asphalt and bitumen
    Patent number: 9090774
    Abstract: The present invention concerns agents containing at least one inorganic pigment, one or more oils, and one or more waxes, and also processes for production thereof and their use for coloration of building products, preferably asphalt, bitumen, bituminous mixtures, tar and tar-containing compositions, and also a process for coloration of building products and the building products colored with the agents.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: July 28, 2015
    Assignee: LANXESS DEUTSCHLAND GMBH
    Inventors: Krzysztof Chlopek, Jurgen Kischkewitz, Lutz Kohnert, Holger Inden
  • OIL- AND WAX-CONTAINING COMPOSITIONS IN PIECE FORM FOR THE COLORING OF ASPHALT AND BITUMEN
    Publication number: 20140083330
    Abstract: The present invention concerns agents containing at least one inorganic pigment, one or more oils, and one or more waxes, and also processes for production thereof and their use for coloration of building products, preferably asphalt, bitumen, bituminous mixtures, tar and tar-containing compositions, and also a process for coloration of building products and the building products colored with the agents.
    Type: Application
    Filed: December 30, 2011
    Publication date: March 27, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Krzysztof Chlopek, Jürgen Kischkewitz, Lutz Kohnert, Holger Inden
  • OIL- AND WAX-CONTAINING AGENTS IN PIECE FORM COMPRISING PARTICULAR WAX MIXTURES FOR THE COLORING OF ASPHALT AND BITUMEN
    Publication number: 20140069298
    Abstract: The present invention concerns agents containing at least one inorganic pigment, one or more oils, at least one Fischer-Tropsch wax and at least one second wax, processes for production thereof and their use for coloration of building products, preferably asphalt, bitumen, bituminous mixtures, tar and tar-containing compositions, and also a process for coloration of building products and the building products colored with the agents.
    Type: Application
    Filed: December 30, 2011
    Publication date: March 13, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Krzysztof Chlopek, Jurgen Kischkewitz, Lutz Kohnert, Holger Inden
  • Pigment/auxiliary combination having improved colour properties
    Patent number: 8414698
    Abstract: The present invention relates to a pigment/auxiliary combination having an improved chroma and/or relative color strength, to its production and to its use.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: April 9, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Holger Friedrich, Jürgen Kischkewitz, Gerald Büchner
  • Adsorption vessels
    Patent number: 7942953
    Abstract: The present invention relates to a filtration unit containing pellets or granules of fine-particle iron oxides and/or iron oxyhydroxides with a large specific surface area, processes for their production and processes for their use in the filtration units.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: May 17, 2011
    Assignee: LANXESS Deutschland GmbH
    Inventors: Andreas Schlegel, Peter Bailly, Jürgen Kischkewitz, Klaus Rohbock
  • Black pigment/auxiliary combination having improved colour strength
    Patent number: 7931745
    Abstract: The present invention relates to a black pigment/auxiliary combination having an improved relative color strength of greater than or equal to 110%, the preparation thereof and the use thereof.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 26, 2011
    Assignee: LANXESS Deutschland GmbH
    Inventors: Holger Friedrich, Jurgen Kischkewitz, Gerald Buchner
  • Contact and adsorbent granules
    Patent number: 7811360
    Abstract: The present invention relates to a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxides, solidified with oxides and/or (oxy)hydroxides of the elements Al, Mg and Ti, the pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide for the absorbent/catalyst, and processes for their production and their use.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: October 12, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Andreas Schlegel, Jürgen Kischkewitz
  • Contact and adsorbent granules
    Patent number: 7767001
    Abstract: The present invention relates to pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide, a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxide embedded in an iron hydroxide matrix, processes for their production comprising filtering, drying and shaping steps and their processes of their use.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: August 3, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Andreas Schlegel, Peter Bailly, Jürgen Kischkewitz, Klaus Rohbock
  • BLACK PIGMENT/AUXILIARY COMBINATION HAVING IMPROVED COLOUR STRENGTH
    Publication number: 20090064904
    Abstract: The present invention relates to a black pigment/auxiliary combination having an improved relative colour strength of greater than or equal to 110%, the preparation thereof and the use thereof.
    Type: Application
    Filed: January 22, 2007
    Publication date: March 12, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Holger Friedrich, Jurgen Kischkewitz, Gerald Buchner
  • Pigment preparations of pasty or gellike consistency
    Publication number: 20080289538
    Abstract: The present invention relates to pasty or gellike pigment preparations for colouring lime-bound and/or cement-bound building materials, asphalt, paints, varnishes, paper or plastics and also to a method of preparing them.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 27, 2008
    Inventors: Holger Friedrich, Jurgen Kischkewitz
  • Contact and adsorbent granules
    Publication number: 20080271601
    Abstract: The present invention relates to a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxides, solidified with oxides and/or (oxy)hydroxides of the elements Al, Mg and Ti, the pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide for the absorbent/catalyst, and processes for their production and their use.
    Type: Application
    Filed: July 10, 2008
    Publication date: November 6, 2008
    Inventors: Andreas Schlegel, Jurgen Kischkewitz
  • Contact and adsorbent granules
    Publication number: 20080271600
    Abstract: The present invention relates to pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide, a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxide embedded in an iron hydroxide matrix, processes for their production comprising filtering, drying and shaping steps and their processes of their use.
    Type: Application
    Filed: July 7, 2008
    Publication date: November 6, 2008
    Inventors: Andreas Schlegel, Peter Bailly, Jürgen Kischkewitz, Klaus Rohbock
  • Adsorption vessels
    Publication number: 20080272054
    Abstract: The present invention relates to a filtration unit containing pellets or granules of fine-particle iron oxides and/or iron oxyhydroxides with a large specific surface area, processes for their production and processes for their use in the filtration units.
    Type: Application
    Filed: July 10, 2008
    Publication date: November 6, 2008
    Inventors: Andreas Schlegel, Peter Bailly, Jurgen Kischkewitz, Klaus Rohbock
  • Pigment/auxiliary combination having improved colour properties
    Publication number: 20070022914
    Abstract: The present invention relates to a pigment/auxiliary combination having an improved chroma and/or relative colour strength, to its production and to its use.
    Type: Application
    Filed: July 17, 2006
    Publication date: February 1, 2007
    Inventors: Holger Friedrich, Jurgen Kischkewitz, Gerald Buchner
  • Contact and adsorbent granules
    Publication number: 20020077249
    Abstract: The present invention relates to a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxides, solidified with oxides and/or (oxy)hydroxides of the elements Al, Mg and Ti, the pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide for the absorbent/catalyst, and processes for their production and their use.
    Type: Application
    Filed: September 25, 2001
    Publication date: June 20, 2002
    Inventors: Andreas Schlegel, Jurgen Kischkewitz