Patents by Inventor Sonke Rolfs

Sonke Rolfs 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).

  • Ceria zirconia alumina composition with enhanced thermal stability
    Patent number: 11135569
    Abstract: The subject matter of the invention is a method for producing composites, comprising mixed oxides of aluminum oxide and cerium/zirconium, hereinafter referred to briefly as Al/Ce/Zr oxide composite(s), using boehmite and soluble cerium/zirconium salts. Al/Ce/Zr oxide composites produced in this way have an increased thermal stability.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: October 5, 2021
    Assignees: TREIBACHER INDUSTRIE AG, SASOL GERMANY GMBH
    Inventors: Karl Schermanz, Amod Sagar, Marcos Schöneborn, Reiner Glöckler, Kai Dallman, Frank Alber, Sonke Rolfs
  • Manganese Oxide Containing Alumina Composition, A Method for Manufacturing the Same and Use Thereof
    Publication number: 20190321804
    Abstract: The present invention is concerned with a manganese oxide alumina containing composition with high resistance against SOx, to a method for making the composition and to use of the composition as a catalyst carrier. The composition comprises an alumina based material, manganese oxide, and silica.
    Type: Application
    Filed: January 19, 2018
    Publication date: October 24, 2019
    Inventors: Dirk Niemeyer, Marcos Schoneborn, Thomas Harmening, Sonke Rolfs
  • NOx trap catalyst support material with improved stability against BaAl2O4 formation
    Patent number: 10279337
    Abstract: The present invention relates to a method for the production of a support material for a nitrogen oxide storage component that is applicable in catalysts for treating exhaust gases from lean-burn engines and a support material made according to said process that is stable against the reaction with a Barium compound to form BaAl2O4.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: May 7, 2019
    Assignee: Sasol Germany GmbH
    Inventors: Marcos Schoneborn, Thomas Harmening, Dirk Niemeyer, Sonke Rolfs, Johanna Fabian
  • CERIA ZIRCONIA ALUMINA COMPOSITION WITH ENHANCED THERMAL STABILITY
    Publication number: 20180147559
    Abstract: A process for the preparation of a calcined mixed oxide comprising Al-, Ce- and Zr-oxides, comprising the steps of providing an aqueous slurry comprising hydroxides of cerium and zirconium, contacting the hydroxides of cerium and zirconium with an alumina precursor to obtain an aqueous suspension of solids, isolating the solids from the aqueous suspension and drying to obtain a solid composition, calcining the solid composition of step (c) at a temperature from 450° C. to 1200° C. for at least 1 hour to obtain a calcined mixed oxide.
    Type: Application
    Filed: January 29, 2018
    Publication date: May 31, 2018
    Inventors: Karl Schermanz, Amod Sagar, Marcos Schöneborn, Reiner Glöckler, Kai Dallman, Frank Alber, Sonke Rolfs
  • NOx Trap Catalyst Support Material with Improved Stability Against BaAl2O4 Formation
    Publication number: 20180065112
    Abstract: The present invention relates to a method for the production of a support material for a nitrogen oxide storage component that is applicable in catalysts for treating exhaust gases from lean-burn engines and a support material made according to said process that is stable against the reaction with a Barium compound to form BaAl2O4.
    Type: Application
    Filed: March 8, 2016
    Publication date: March 8, 2018
    Inventors: Marcos Schoneborn, Thomas Harmening, Drik Niemeyer, Sonke Rolfs, Johanna Fabian
  • Ceria zirconia alumina composition with enhanced thermal stability
    Patent number: 9889428
    Abstract: A process for the preparation of a calcined mixed oxide comprising Al-, Ce- and Zr-oxides, comprising the steps of providing an aqueous slurry comprising hydroxides of cerium and zirconium, contacting the hydroxides of cerium and zirconium with an alumina precursor to obtain an aqueous suspension of solids, isolating the solids from the aqueous suspension and drying to obtain a solid composition, calcining the solid composition of step (c) at a temperature from 450° C. to 1200° C. for at least 1 hour to obtain a calcined mixed oxide.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: February 13, 2018
    Assignees: TREIBACHER INDUSTRIE AG, SASOL GERMANY GMBH
    Inventors: Karl Schermanz, Amod Sagar, Marcos Schöneborn, Reiner Glöckler, Kai Dallmann, Frank Alber, Sönke Rolfs
  • CERIA ZIRCONIA ALUMINA COMPOSITION WITH ENHANCED THERMAL STABILITY
    Publication number: 20130017947
    Abstract: A process for the preparation of a calcined mixed oxide comprising Al-, Ce- and Zr-oxides, comprising the steps of providing an aqueous slurry comprising hydroxides of cerium and zirconium, contacting the hydroxides of cerium and zirconium with an alumina precursor to obtain an aqueous suspension of solids, isolating the solids from the aqueous suspension and drying to obtain a solid composition, calcining the solid composition of step (c) at a temperature from 450° C. to 1200° C. for at least 1 hour to obtain a calcined mixed oxide.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 17, 2013
    Applicants: Sasol Germany GmbH, Treibacher Industries AG
    Inventors: Karl Schermanz, Amod Sagar, Marcos Schöneborn, Reiner Glöckler, Kai Dallmann, Frank Alber, Sönke Rolfs