Patents by Inventor Herve B. Parfait

Herve B. Parfait 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).

  • Method and apparatus for cryogenic fractionation of a gaseous feed
    Patent number: 4690702
    Abstract: The invention relates to a method and an apparatus for cryogenic fractionation of a gaseous feed comprising a contact purifying-refrigerating column into the bottom of which is injected a partially condensed gaseous feed, the said column producing in its head portion a residual gas and in its bottom portion a liquid which is injected into a fractionating column producing in its head portion a distillate which is at least partially condensed and injected into the head portion of the column to thus recover in the bottom liquid of this column the heavy compounds contained in the vaporized fraction of the gaseous feed.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: September 1, 1987
    Assignee: Compagnie Francaise d'Etudes et de Construction "Technip"
    Inventors: Henri Paradowski, Joelle H. Castel, Herve B. Parfait