Patents by Inventor Frans Grunchard

Frans Grunchard 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 the preparation of 1,1-difluoroethane
    Patent number: 5714652
    Abstract: The invention relates to a process for the preparation of 1,1-difluoroethane by reaction of vinyl chloride with hydrogen fluoride, in the presence of perchloroethylene or 1,1,1,3,3-pentafluorobutane.
    Type: Grant
    Filed: April 11, 1996
    Date of Patent: February 3, 1998
    Assignee: Solvay (Societe Anonyme)
    Inventors: Frans Grunchard, Francine Janssens, Vincent Wilmet
  • Process for the production of epichlorohydrin
    Patent number: 5344945
    Abstract: Process for the production of epichlorohydrin in which the chloroaliphatic impurities formed at the hypochlorination of allyl chloride to dichloropropanols are removed from the crude aqueous solution of dichloropropanols before dehydrochlorination, by extraction with a recycled organic solvent which is rich in 1,2,3-trichloropropane.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: September 6, 1994
    Assignee: Solvay (Societe Anonyme)
    Inventor: Frans Grunchard