Patents by Inventor Svetlana Zimmermann

Svetlana Zimmermann 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).

  • Cu-CHA/Fe-BEA mixed zeolite catalyst and process for the treatment of NOin gas streams
    Patent number: 9999877
    Abstract: The present invention relates to a catalyst, which may be used in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the BEA structure type, one or more zeolites of the CHA structure type, and optionally one or more zeolites of the MFI structure type, wherein at least part of the one or more zeolites of the BEA structure type contain iron (Fe), wherein at least part of the one or more zeolites of the CHA structure type contain copper (Cu), and wherein at least part of the optional one or more zeolites of the MFI structure type contain iron (Fe). Furthermore, the present invention concerns an exhaust gas treatment system comprising said catalyst as well as a process for the treatment of a gas stream comprising NOx using said catalyst as well.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: June 19, 2018
    Assignee: BASF SE
    Inventors: Susanne Stiebels, Claudia Wendt, Torsten Neubauer, Svetlana Zimmermann