Patents by Inventor David Longohr

David Longohr 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).

  • MOLTEN GRAINS OF ALUMINA-ZIRCONIA
    Publication number: 20120186161
    Abstract: The invention relates to a fused grit having the following chemical analysis, in wt %: ZrO2+HfO2: 38.0-46.0%; Al2O3: the remainder up to 100%; SiO2: 0.20-0.60%; Y2O3: 0.45 to 0.70%; TiO2: 1.00 to 2.00%; other oxides: <1.00%, the ratio of Y2O3/SiO2 being 0.80 to 2.00, and the tetragonal phase being 60 to 90% of the weight of the zirconia, the remainder being in monoclinic form.
    Type: Application
    Filed: August 4, 2010
    Publication date: July 26, 2012
    Applicant: SAINT-GOBAIN CENTRE DE REICHERCHES ET D'ETUDES EUROPEEN
    Inventors: Samuel Marlin, David Longohr, Sylvain Petigny