Patents Represented by Law Firm Dapaoli & O'Brien
  • Production of microcrystalline zirconia
    Patent number: 4588576
    Abstract: This invention provides a process for production of a microcrystalline metal oxide having an average particle size less than about 1000 angstroms.An important feature of the invention process involves the application of ultrasonic wave energy during the stage that a solution of metal organic compounds is being treated to form a gelled solution. The ultrasonic energy input during the gelling stage enhances the production of a high purity metal oxide powder having fine grain particles of uniform microspheric dimensions.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: May 13, 1986
    Assignee: Celanese Corporation
    Inventor: Lawrence D. David