Patents by Inventor Marc Ducrocq

Marc Ducrocq 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 installation for the production of oxygen gas under high pressure by air distillation
    Patent number: 5337571
    Abstract: In this nitrogen-cycle installation, the cycle compressor provides a supply of high-pressure nitrogen which serves to heat oxygen supplied in liquid form from the reservoir of a low-pressure column and raised in pressure by a pump to the desired high production pressure. Oxygen gas may be produced at a pressure exceeding about 50 bars.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: August 16, 1994
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Marc Ducrocq, Shinji Tomita