Patents by Inventor Friedhelm Ferlings

Friedhelm Ferlings 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).

  • Device and a process for dissolving water-soluble powdery polymers
    Patent number: 5792434
    Abstract: In a device for dissolving water-soluble, powdery polymers which has a pipe with an inlet to introduce the polymer solution containing gel components and an outlet to discharge the polymer solution, the gel content in the polymer solution is reduced without reducing the viscosity of the polymer solution by means of the fact that the pipe is formed of a plurality of pipe sections which are provided with filters and can be connected with one another.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: August 11, 1998
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Friedhelm Ferlings, Uwe Gunther, Hans-Georg Hartan, Werner Fischer