Patents by Inventor Dominique L. J. Leroy

Dominique L. J. Leroy 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).

  • Lead aluminoborofluorosilicate moldable glasses
    Patent number: 4447550
    Abstract: The instant invention is directed to optical glass compositions capable of being shaped under the combined action of temperature and pressure in a mold so as to obtain articles having surfaces exhibiting highly precise reproduction of the mold walls. The inventive glasses demonstrate softening points not exceeding 500.degree. C., refractive indices between about 1.65-1.82, Abbe number between about 27-39, and consist essentially, in weight percent, of______________________________________ SiO.sub.2 8-20 B.sub.2 O.sub.3 5-20 PbO 50-70 Al.sub.2 O.sub.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: May 8, 1984
    Assignee: Corning Glass Works
    Inventors: Dominique L. J. Leroy, Jean-Pierre Mazeau