Patents Assigned to Ortech International
  • Production of spherical ceramic powders
    Patent number: 5064783
    Abstract: A sol-gel method is employed to produce ceramic oxide spheres from precursors thereto. An alkanol of the sol precursor(s) is introduced to an immiscible hydrophilic liquid phase to cause spheroidizing of the sol. Moisture, which initially may be present in the immiscible liquid or may subsequently be added, is employed to effect hydrolysis of the precursor to oxide form. The ceramic oxide spheres are recovered from the liquid phase and calcined to their final form.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: November 12, 1991
    Assignee: Ortech International
    Inventor: Lydia M. Luckevich