Patents by Inventor Mike De L'Isle

Mike De L'Isle 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 plant for the production of a gas under pressure by cryogenic distillation
    Patent number: 5685173
    Abstract: In a process for the production of gas under pressure by cryogenic distillation, the gas is produced by vaporizing (or pseudo-vaporizing) a liquid drawn off from a distillation column. In order to supply additional gas under pressure, a flow of a gas coming from an external source is at least partially liquefied, and the liquid thus formed is added to the liquid drawn off from the column before or after an optional pressurization step.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: November 11, 1997
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Mike De L'Isle, Yves Koeberle
  • Process for the separation of a gas mixture by cryogenic distillation
    Patent number: 5651271
    Abstract: In order to precool a flow of gas to be distilled, before a purification stage, it is sent into an exchanger (5) where it is cooled by heating a flow of refrigerant (13B). At least a part of this refrigerant has its pressure reduced before cooling the unpurified gas and may be a fraction of the gas to be distilled or a product of the distillation. It is preferably a cycle gas of the system. This arrangement makes it possible to obviate a refrigerating unit.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: July 29, 1997
    Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude
    Inventors: Philippe Fraysse, Mike De L'Isle, Daniel Rousseau