Patents by Inventor Wilfried Schenelle

Wilfried Schenelle 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).

  • Process for the manufacture of catalytic elements and catalytic elements so produced
    Patent number: 4895821
    Abstract: This invention relates to a process for the manufacture of catalysts for the reduction of nitrogen oxides in exhaust gases or for chemical air cleaning processes, in which catalyst moldings are produced from iron oxide or mixtures of iron oxide and chromium oxide and/or manganese oxide, which are reduced to grain sizes less than 2 mm, with the use of inorganic binders and sulfuric acid, and with the possible addition of activating additives.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: January 23, 1990
    Assignees: Didier-Werke AG, Didier Engineering GmbH
    Inventors: Hartmut Kainer, Eugen Buhler, Daniel Grimm, Wilfried Schenelle, Claus Flockenhaus, Karl-Heinrich Laue, Klaus Merkel