Patents by Inventor Hans-Gunter Breidohr

Hans-Gunter Breidohr 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).

  • Process for removal of lumen fillers and other soluble residues from hollow filaments
    Patent number: 5779815
    Abstract: A process and an apparatus for removal of a lumen filler and/or other soluble residues from hollow filament bundles are described. The hollow filament bundles are first roughly cleaned by centrifuging, after which in a process preferably containing multiple steps they are cleaned by spraying and centrifuging. The first spraying step is preferably carried out in a pass-through mode and each of the additional steps under recirculation. After a constant concentration has been attained, the cleaning baths in each case are employed for a lower-order treatment step, the cleaning bath of the first spraying step being fed to a recycling process.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: July 14, 1998
    Assignee: Akzo Nobel NV
    Inventors: Hans-Gunter Breidohr, Manfred Martin, Bernhard Krautwurst, Martin Konig