Patents by Inventor Erik Mennessier

Erik Mennessier 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 containing oxygen and nitrogen and production of nitroceramics/vetroceramics composites therefrom
    Patent number: 5166102
    Abstract: Glass compositions containing oxygen and nitrogen prepared by melting admixture of magnesia and/or a magnesium silicate, silica and an aluminum nitride produced by reacting ammonia with aluminum oxide, have the formula:Mg.sub.x Si.sub.y Al O.sub.u N.sub.v (1)in which 0.25.ltoreq.x.ltoreq.2.50, 1.25.ltoreq.y.ltoreq.3.50, 3.75.ltoreq.u.ltoreq.10.50, and 0.05.ltoreq.v.ltoreq.0.75, with the proviso that 2x+4y+3=2u+3v; the subject glass compositions are thermally converted into vitroceramics having the same formula and including a single cordierite crystalline phase, which vitroceramics are well adapted for the production of composite shaped articles.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: November 24, 1992
    Assignee: Ceramiques et Composites
    Inventors: Claudette Drouet, Yves Laurent, Erik Mennessier, Laurence Poquillon, Patrick Verdier