Patents by Inventor Alex Christian Hoffmann

Alex Christian Hoffmann 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).

  • Swirl tube separator
    Patent number: 7648544
    Abstract: Swirl tube separator for separating solids from a gas-solid containing feed comprising a tubular housing, an inlet for introducing a gas-solids mixture at one end of said housing, a solids outlet opening at the opposite end of said housing, and a co-axial positioned tubular gas outlet conduit placed at an end of said housing, wherein along the axis of the tubular housing a vortex extender pin is present.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: January 19, 2010
    Assignee: Shell Oil Company
    Inventors: Thomas Shawn Dewitz, Hubertus Wilhelmus Albertus Dries, Andreas Ekker, Jan Kater, Richard Addison Sanborn, Alex Christian Hoffmann, Weiming Peng