Patents by Inventor Franz Prammer

Franz Prammer 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).

  • Patent number: 4022581
    Abstract: A device for the recovery of noble metals emanating from the surface of catalysts used in high pressure gas reactions involving absorbing the noble metal dispersed in the reaction gas in an intercepting bed formed of acid-soluble metal oxides in which the external boundary surface of the intercepting bed is 1.5 to 20 times the cross-sectional area of the catalyst surface. The thickness of the intercepting bed, in the direction of gas flow through the material thereof, is 20 to 40 mm., and the flow of the reaction gases in the intercepting bed is in a direction parallel to the plane of the supporting base of the bed.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: May 10, 1977
    Assignee: Chemie Linz Aktiengesellschaft
    Inventors: Hermann Rudorfer, Anton Wagner, Franz Prammer, Friedrich Klausner
  • Patent number: 3954449
    Abstract: A process for the recovery of noble metals emanating from the surface of catalysts used in high pressure gas reactions involving absorbing the noble metal dispersed in the reaction gas in an intercepting bed formed of acid-soluble metal oxides in which the external boundary surface of the intercepting bed is 1.5 to 20 times the cross-sectional area of the catalyst bed surface, the thickness of the intercepting bed, in the direction of gas flow through the material thereof, is 20 to 40 mm., and the flow of the reaction gases in the intercepting bed is in a direction parallel to the plane of the supporting base of the bed.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: May 4, 1976
    Assignee: Chemie Linz Aktiengesellschaft
    Inventors: Hermann Rudorfer, Anton Wagner, Franz Prammer, Friedrich Klausner