Patents by Inventor Jean Filippi

Jean Filippi 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 separating 2-keto-L-gulonic acid from a fermented medium
    Patent number: 4990441
    Abstract: 2-Keto-L-gulonic acid is separated from a fermented medium containing the calcium salt of 2-keto-L-gulonic acid, by carrying out the following operations: separation of insolubles; removal of inorganic cations; and separation of the 2-keto-L-gulonic acid.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: February 5, 1991
    Assignee: Rhone-Poulenc Sante
    Inventors: Jean-Pierre Barthole, Jean Filippi, Aurelia Jaeger-Seddik, Isidore Le Fur, Jean-Yves Pommier