Patents by Inventor Stefan Freudenthaller

Stefan Freudenthaller 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: 6071405
    Abstract: A device for the desalination and conditioning of water, in particular used water from electrical erosion machines, in which two ion exchange columns (2, 3) are connected one behind the other, one of which (2) is filled w cationic exchange resin and the other (3) is filled with anionic exchange resin, the two ion exchange columns (2, 3) being arranged in a common, tightly sealed casing (1), and the connections for the feed line (5) and the discharge line (6) of each column (2, 3) being led out of the casing (1) in a leakproof manner.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: June 6, 2000
    Assignee: Charmilles, Zubehoer, Ersatzteile, Vertriebsgesellschaft mbH
    Inventor: Stefan Freudenthaller