Patents by Inventor Michel Poulain

Michel Poulain 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).

  • Fluoride glasses
    Patent number: 4666870
    Abstract: The invention relates to a beryllium free fluoride glass composition used to prepare fluoride glass and the fluoride glass prepared by the composition. The fluoride composition contains only fluoride compounds and does not contain any oxygen atoms.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 19, 1987
    Inventors: Marcel J. Poulain, Michel A. Poulain, Gwenael A. Maze
  • Halogenated glasses
    Patent number: 4647545
    Abstract: Halogenated glass comprising 20 to 90 mole percent of at least one of cadmium, manganese and zinc halide and a process for the preparation thereof.
    Type: Grant
    Filed: February 17, 1983
    Date of Patent: March 3, 1987
    Assignee: Etablissement Public dit: Centre National de la Recherche Scientifique
    Inventors: Jacques Lucas, Marc Matecki, Michel Poulain, Marcel Poulain
  • Compositions of fluoride glasses and process for manufacturing fluoride glasses
    Patent number: 4141741
    Abstract: Compositions of fluorinated glasses are disclosed which result from the ternary composition of ZrF.sub.4 or HfF.sub.4, BaF.sub.2 and ThF.sub.4 or UF.sub.4, each component being within a specified range of composition indices, the indices for the separate components totalling unity.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: February 27, 1979
    Assignee: Etablissement Public dit "Agence Nationale de Valorisation de la Recherche (ANVAR)"
    Inventors: Jacques Lucas, Michel Poulain, Marcel Poulain