Patents by Inventor Eric Deslandes

Eric Deslandes 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).

  • Purification of chlorotetraflouroethane by extractive distillation
    Patent number: 5922175
    Abstract: A process for the purification of 1-chloro-1,2,2,2-tetrafluoroethane (F124) containing 1,2-dichlorotetrafluoroethane (F114) and/or 1,1-dichlorotetrafluoroethane (F114a). The F124 to be purified is subjected to extractive distillation, the extractant being chosen from C.sub.5 -C.sub.8 aliphatic or cycloaliphatic hydrocarbons and C.sub.4 -C.sub.8 perfluoroalkyl halides.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: July 13, 1999
    Assignee: ELF Atochem S.A.
    Inventors: Rene Bertocchio, Eric Deslandes, Eric Lacroix