Patents by Inventor Wolfgang Falz

Wolfgang Falz 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).

  • Method for producing zirconia-reinforced alumina grains, in particular abrasive grains, and grains produced by such method
    Patent number: 9212302
    Abstract: Method for producing zirconia-reinforced Al2O3 grains, including at least the following steps: inductively melting a starting mixture to form a eutectic melt made of alumina and zirconia; applying the eutectic melt as a thin layer material, the thin layer material being quenched; and removing the thin layer material. In this manner abrasive grains can be formed directly or the thin layer material can be classified when it is broken into abrasive grains, the grains are polycrystalline without amorphous glass phases as an alumina matrix having zirconia precipitations, and at least some of the zirconia precipitations can be formed in the nanoscale range.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: December 15, 2015
    Assignee: VSM•Vereinigte Schmirgel-und Maschinen-Fabriken AG
    Inventors: Gerd Fischer, Clemens Megerle, Wolfgang Falz
  • Granular abrasive material
    Patent number: 5259147
    Abstract: A granular abrasive material is produced from a dispersion consisting of raw materials containing alumina, compounds containing silica and other additives. The dispersion is ground to a sinterable slip with a grain size of less than 1 micrometer. The slip is dried and may be pressed before being subjected to a multi-stage heating process to produce sintered corundum crystals.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: November 9, 1993
    Assignee: Vereinigte Schmirgel-und Maschinenfabriken Aktiengesellschaft
    Inventors: Wolfgang Falz, Gunter Bigorajski, Herbert Exner