Patents by Inventor Debora da Silva

Debora da Silva 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).

  • Glass compositions for the production of lead-free crystals
    Publication number: 20060240970
    Abstract: The invention refers to glass compositions for the production of lead-free crystals, having a density greater than 2.4 g/cm3, a refractory index of at least 1.51 and high resistance to chemical attack, characterized by comprising, by weight: from about 50% to about 75% of SiO2; from about 0.1% to about 1% of As2O3; from about 5% to about 15% of K2O; from about 2% to about 6% of Na2O; from about 3% to about 12% of CaO; from about 0.1% to about 5% of BaO; from about 0.1% to about 10% of Nb2O5; and, up to 5% of other elements.
    Type: Application
    Filed: December 19, 2003
    Publication date: October 26, 2006
    Applicant: COMPANHIA BRASILEIRA DE METALURGIA E MINERACAO
    Inventors: Antonio Pereira, Frederico Strauss, Debora da Silva