Patents by Inventor Helke Doering

Helke Doering 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).

  • Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function
    Patent number: 9533295
    Abstract: A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) is described. More particularly, the present invention is directed to a washcoat composition comprising high silica to alumina zeolite and platinum and palladium such that the zeolite minimizes negative interactions of these platinum group metals with the zeolite.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: January 3, 2017
    Assignees: BASF CORPORATION, BASF SE
    Inventors: Torsten W. Müller-Stach, Alfred H. Punke, Gerd Grubert, Marcus Hilgendorff, Helke Doering, Torsten Neubauer, Xiaolai Zheng, Chung-Zong Wan, Wen-Mei Xue, Patrick Burk
  • PT-PD Diesel Oxidation Catalyst With CO/HC Light-Off And HC Storage Function
    Publication number: 20150174564
    Abstract: A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) is described. More particularly, the present invention is directed to a washcoat composition comprising high silica to alumina zeolite and platinum and palladium such that the zeolite minimizes negative interactions of these platinum group metals with the zeolite.
    Type: Application
    Filed: April 5, 2012
    Publication date: June 25, 2015
    Applicants: BASF Corporation, BASF SE
    Inventors: Torsten W. Müller-Stach, Alfred H. Punke, Gerd Grubert, Marcus Hilgendorff, Helke Doering, Torsten Neubauer, Xiaolai Zheng, Chung-Zong Wan, Wen-Mei Xue, Patrick Burk
  • Diesel oxidation catalyst composites
    Patent number: 8568674
    Abstract: Oxidation catalyst composites for the treatment of exhaust gas emissions, such as the abatement of unburned hydrocarbons (HC), and carbon monoxide (CO) and the oxidation of NO to NO2 are disclosed The catalyst composites comprise two washcoat layers containing two different compositions of platinum group metals to optimize the NO2 exiting the catalyst composite. The key to improvement in NO oxidation is to have one catalyst layer that contains Pt while being substantially free of Pd. Methods and systems utilizing the catalyst composites are also disclosed.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: October 29, 2013
    Assignee: BASF Corporation
    Inventors: Shiang Sung, Stanley A. Roth, Claudia Wendt, Susanne Stiebels, Helke Doering