Patents by Inventor Ernst Bocker

Ernst Bocker 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).

  • Apparatus for the preparation of melt-sprayed spherical phenacetin granules
    Patent number: 4092089
    Abstract: An apparatus for melt-spraying thermally sensitive material of low viscosity comprises a heatable multi-screw extruder having intermeshing, self-cleaning screws of specified clearance between the screws and between the screws and the extruder housing, a heatable pump for delivering molten material from the extruder to a heatable atomizer and a spray tank in which the atomizer is located for cooling and solidifying the melt-sprayed material.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: May 30, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Bocker, Wolfgang Kracht, Roland Rupp, Erhard Schellmann, Viktor Trescher, Martin Ullrich
  • Preparation of melt-sprayed spherical phenacetin granules
    Patent number: 4086346
    Abstract: Substantially spherical granules of phenacetin are prepared by spraying liquid phenacetin which has been melted without decomposition by means of rapid passage through a melting device in which superheating is minimized. The resultant melt-sprayed granules are superior to crystalline phenacetin in the formulation of pharmaceutical tablets.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: April 25, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Bocker, Wolfgang Kracht, Roland Rupp, Erhard Schellmann, Viktor Trescher, Martin Ullrich