Patents by Inventor Claudette Drouot

Claudette Drouot 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).

  • Composite shaped articles comprising reinforced vitreous matrices
    Patent number: 5221645
    Abstract: Composite shaped articles, well adapted for aerospace applications, include a vitreous matrix and an effective amount of a reinforcing agent therefor, preferably a fibrous and ceramic reinforcing agent, such vitreous matrix being based on silica, alumina, zirconia, an alkali metal oxide and an alkaline earth metal oxide, in the following proportions by weight relative to the total weight of the matrix:______________________________________ (1) 50% .ltoreq. SiO.sub.2 .ltoreq. 80% (2) 7% .ltoreq. Al.sub.2 O.sub.3 .ltoreq. 20% (3) 2% .ltoreq. ZrO.sub.2 .ltoreq. 10% (4) 2% .ltoreq. .SIGMA.A.sub.2 O .ltoreq. 7% (5) 4% .ltoreq. .SIGMA.BO .ltoreq. 10% ______________________________________wherein .SIGMA.A.sub.2 O and .SIGMA.BO represent the respective total amounts by weight of the alkali metal oxides and the alkaline earth metal oxides present in said matrix.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: June 22, 1993
    Assignee: Ceramiques et Composites
    Inventors: Claudette Drouot, Paul Goursat, Bernard Lengronne, Christophe Seraudie