Patents Assigned to L'Air Liquide, Society Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
  • Process for extraction of spices
    Patent number: 4985265
    Abstract: A process for extracting spices in liquid carbon dioxide in the presence of an alimentarily acceptable cosolvent which does not degrade the flavors of the spices. The process is particularly applicable to the extraction of piperine and aromatic compounds of pepper.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: January 15, 1991
    Assignee: L'Air Liquide, Society Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Soraya Duboc, Henri Renon, Serge Laugier, Jean-Luc Mizandjian, Jean-Louis Pean
  • Process and container for supplying supercritical CO.sub.2
    Patent number: 4977747
    Abstract: A cylinder (1) having a plunger tube (3) contains a mass of supercritical CO.sub.2 containing 7 to 8% dissolved hydrogen, surmounted by a gaseous sky constituted by hydrogen under a pressure higher than about 120 bars. Supercritical CO.sub.2 containing several percent of dissolved hydrogen can thus be obtained by merely opening the valve (5) of the cylinder. Used in the cosmetic industry.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: December 18, 1990
    Assignee: L'Air Liquide, Society Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Serge Frejaville, Philippe Mittelman, Claude Rajaonarivello, Jean-Michel Naud