Patents by Inventor Holger Leubner

Holger Leubner 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).

  • UREA FILTER MATERIAL
    Publication number: 20140196421
    Abstract: A urea filter material may have a base layer, a cover layer and a filter layer arranged between the base layer and the cover layer, wherein all of the layers are formed from polypropylene non-woven fabric.
    Type: Application
    Filed: February 2, 2012
    Publication date: July 17, 2014
    Applicants: CARL FREUDENBERG KG, MAHLE INTERNATIONAL GMBH
    Inventors: Stefan Jauss, Sven Siegle, Anette Arnold, Thomas Kuehlwein, Holger Leubner