Patents by Inventor Kurt Hecky

Kurt Hecky 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).

  • Preparation of composite fibers and diaphragms
    Patent number: 6352660
    Abstract: Composite fibers useful for preparing diaphragms are prepared by (a) mixing a PTFE or PTFE copolymer dispersion or powder with a finely divided inorganic material and a fiber forming material, (b) shear heating the resulting mixture to a temperature at which sheared to PTFE or PTFE copolymer becomes flowable without showing signs of decomposition while removing the dispersion medium, if a PTFE or PTFE copolymer dispersion is used, (c) cooling the mixture to below 70° C., (d) mix shearing the mixture at below 70° C. to form composite fibers.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: March 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Friedrich, Ulrich Bröckel, Dieter Schläfer, Klaus-Dieter Hoppe, Kurt Hecky, Peter Palm
  • Modification of the flow resistance of diaphragms
    Patent number: 5919348
    Abstract: The flow resistance of a diaphragm based on a fiber material is modified by treating the diaphragm during or after preparation thereof with a dispersion comprising a fluorine-containing component and optionally with a solution comprising a precursor of ZrO.sub.2.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: July 6, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Friedrich, Klaus-Dieter Hoppe, Bernd Leutner, Dieter Schlafer, Kurt Hecky
  • Regeneration of plastic diaphragm
    Patent number: 5755951
    Abstract: A process for the regeneration of plastic diaphragms is described, in which a mineral acid solution is mixed with a suitable corrosion inhibitor, this mixture is temperature controlled at from approximately 0.degree. to 100.degree. C., preferably 40.degree. to 80.degree. C., in particular 50.degree. to 70.degree. C., and passed through the diaphragm for from approximately 0.1 to 84 hours, preferably 1 to 72 hours, in particular 2 to 24 hours.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: May 26, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudi Kroner, Bernd Leutner, Hans-Michael Schneider, Holger Friedrich, Kurt Hecky, Dieter Schlafer, Wolfgang Steiner