Patents by Inventor Francois Montazeau

Francois Montazeau 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 phosgene
    Patent number: 4073806
    Abstract: Phosgene is prepared from chlorine and carbon monoxide by plural stage catalytic interreaction wherein all of the chlorine requirement and at least some but less than all of the carbon monoxide requirement is introduced to a first stage reaction zone, with the remaining required carbon monoxide being introduced to downstream reaction zone(s) serially connected to said first stage reaction zone.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: February 14, 1978
    Assignee: Societe Toulousaine de Produits Chimiques "Tolochimie"
    Inventors: Serge Doubovetzky, Peter Forschner, Francois Montazeau