Patents by Inventor Etienne Chavel

Etienne Chavel 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 and apparatus for the treatment of effluents containing emulsion inks
    Patent number: 5269941
    Abstract: Effluent containing inks undergoes flocculation by the action of a flocculating agent, followed by the continuous centrifuging of the effluent consisting of an acceleration between 1,000 and 20,000 g, while avoiding an air-liquid interface during centrifuging.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: December 14, 1993
    Assignee: La Cellulose du Pin c/o Saint-Gobain Recherche
    Inventors: Etienne Chavel, Pierre Langlade, Jean-Claude Pommier