Patents by Inventor Kv{hacek over (e)}ta Sázavová

Kv{hacek over (e)}ta Sázavová 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).

  • Crystal glass having refractive index higher than 1.53 without a content of compounds of lead, barium and arsenic
    Patent number: 8877663
    Abstract: This invention relates to a crystal glass having a refractive index higher than 1.53 and a high mechanical strength, free of any content of compounds of lead, barium and arsenic and guaranteeing maximum safety for health, which consists in that it comprises by weight: 55-70% SiO2, 0.05-3.5% Li2O, 2-15% Na2O, more than 3% and less than 5% or more than 15% and less than 19% K2O, 5 to 10% CaO, more than 1% and less than 4% or more than 7% and less than 8% ZnO, 0.1-3.5% B2O3, 0.1-3.5% Al2O3, 0.1-3.5% TiO2, less than 3.5% ZrO2, 0.05-1.5% Gd2O,3 0.05-1% P2O5, 0.1-1% Sb2O3.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: November 4, 2014
    Assignee: Preciosa A.S.
    Inventors: Miroslav Rada, Kv{hacek over (e)}ta Sázavová, Jan Ko{hacek over (r)}enský, Ji{hacek over (r)}i Vav{hacek over (r)}ena