Patents by Inventor Werner Richtering

Werner Richtering 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).

  • Method and device for electrodialytic regeneration of an electroless metal deposition bath
    Patent number: 6379517
    Abstract: A method and a device for the regeneration of an electroless metal deposition bath containing hypophosphite ions by electrodialysis is described. The method according to the invention and the device differ from the prior art in that the bath solution is led simultaneously through diluate compartments in a second electrodialysis unit having cathodes and anodes, which compartments are separated from concentrate compartments in the second electrodialysis unit on the cathode side by monoselective anion-exchange membranes and on the anode side by anion-exchange membranes, the diluate compartments and the concentrate compartments in the second electrodialysis unit being disposed alternately to one another.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: April 30, 2002
    Assignee: Atotech Deutschland GmbH
    Inventors: Jens Heydecke, Rainer Born, Werner Richtering, Manfred Blaschke, Alexander Kraft, Maja Wunsche