Patents by Inventor Daniel Roland

Daniel Roland 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).

  • Process for purification of hydrochlorofluoroethanes
    Patent number: 5951830
    Abstract: To remove the olefinic impurities from a hydrochlorofluoroethane of formula: CF.sub.3 --CHClX (X=H, F, or Cl), it is subjected to a photochlorination stage.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: September 14, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Rene Bertocchio, Andre Lantz, Daniel Roland, Bertrand Collier