Patents Assigned to Egbert Brandau
  • Process for producing aluminum oxide beads
    Patent number: 6197073
    Abstract: In order to produce aluminium oxide beads, an acid aluminium oxide sol or an acid aluminium oxide suspension is converted into droplets by a vibrating nozzle plate and pre-solidified after the formation of a bead shape by laterally blowing gaseous ammonia and then coagulated in an ammonia solution.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: March 6, 2001
    Assignee: Egbert Brandau
    Inventors: Martin Kadner, Egbert Brandau, Hans Huschka