Patents by Inventor Joelle Castel

Joelle Castel 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 of fractionating gas feeds and apparatus for carrying out the said process
    Patent number: 4689063
    Abstract: The present invention relates to a process and an apparatus for cryogenic fractionation of gas feeds, the apparatus comprising essentially a contact purifying-refrigerating column associated with a fractionating column, an exchange system, a plurality of ducts with valves connecting the above three elements and two closed end independent refrigerating circuits integrated to the exchange system.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: August 25, 1987
    Assignee: Compagnie Francaise d'Etudes et de Construction "Technip"
    Inventors: Henri Paradowski, Herve Parfait, Joelle Castel, Alain Vasseur
  • Method for treating residue gases proceeding from sulphur removing units and plants for carrying out the said method
    Patent number: 4308243
    Abstract: This invention relates to a method for treating residue gases proceeding from units applying the Claus reaction for the removal of sulphur and having been subjected to a conversion of the sulphur compounds into sulphuretted hydrogen.This method consists in that, prior to absorption of the sulphuretted hydrogen by a selective solvent in aqueous solution, the gases to be treated are cooled to a temperature so selected as to condense the water contained in the gases to form an aqueous effluent which is thereafter injected into the circuit of the selective solvent.
    Type: Grant
    Filed: February 20, 1980
    Date of Patent: December 29, 1981
    Assignee: Compagnie Francaise d'Etudes et de Construction "TECHNIP"
    Inventors: Joelle Castel, Christian Legrand