Patents Assigned to Compagnie Generale d'Electroceramique
  • Process for the manufacture of articles of translucent alumina
    Patent number: 4031177
    Abstract: Final sintering of an alumina powder containing a small portion of magnesia, baryta, lanthana, yttria, or salts of magnesium, barium, lanthanum or yttrium, in a non-oxidizing carbon monoxide atmosphere at a temperature above 1700.degree. C produces a translucent alumina article.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: June 21, 1977
    Assignee: Compagnie Generale d'Electroceramique
    Inventors: Alain Auriol, Paul Tritten