Patents by Inventor Ghislaine Barthole

Ghislaine Barthole 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).

  • Electrolytic production of rare earth metals/alloys thereof
    Patent number: 5190625
    Abstract: The rare earth metals, or alloys thereof, are prepared in high yields in a specially designed electrolytic cell, by electrolyzing a melt comprising (i) at least one chloride of at least one rare earth, or at least one such chloride and at least one chloride of at least one transition metal, (ii) at least one alkali or alkaline earth metal chloride, and (iii) at least one alkali or alkaline earth metal fluoride.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: March 2, 1993
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Francoise Seon, Ghislaine Barthole