Patents by Inventor Robert Kegel

Robert Kegel 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).

  • Sealable discharge die for thermoplastic
    Patent number: 4479768
    Abstract: A sealable discharge die for thermoplastics, comprising a housing, a dieplate which closes the latter except for perforations for discharge of the plastic melt in strands or filaments, and a perforated plate located immediately below or above this dieplate, one of the plates being slidable or rotatable and the perforated plate having orifices which can be brought into alignment with the perforations of the dieplate.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: October 30, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Kube, Robert Kegel, Guenter Valentin, Dieter Staufer
  • Removal of caprolactam and its oligomers from cooling water containing these compounds
    Patent number: 4464266
    Abstract: A process for removing caprolactam and its oligomers from cooling water containing these compounds, wherein gases are introduced into the cooling water and the foam which forms is separated off.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: August 7, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hugo Strehler, Robert Kegel, Guenter Valentin, Werner Hoerauf
  • Process for removing volatiles evolved from plastic melts
    Patent number: 4233429
    Abstract: A process for removing volatile constituents which are evolved from plastic melts when extruding the latter and are drawn off together with the surrounding air. The volatile constituents are drawn off immediately as they are evolved by the plastic melt and the air containing such volatile constituents is heated immediately after entering the suction orifice, and an apparatus for carrying out this process.
    Type: Grant
    Filed: July 25, 1978
    Date of Patent: November 11, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Hoerauf, Guenter Valentin, Robert Kegel, Helmut Kuhn