Patents by Inventor Andre Demoulin

Andre Demoulin 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).

  • Lubricating compound for refrigeration compressors
    Patent number: 6224783
    Abstract: The present invention provides a lubricating oil or a lubricating oil additive, particularly suitable for a R-134a (1,1,1,2-tetrafluoroethane) or R-134 (1,1,2,2-tetrafluoroethane) refrigerant, consisting of a compound (X) that can be prepared by esterification of a polyoxyethoxylated glycerol with at least one polycarboxylic acid compound having from 2 to 20 carbon atoms, preferably from 4 to 13 carbon atoms, and at least one monocarboxylic acid compound having from 2 to 20 carbon atoms, preferably from 6 to 13 carbon atoms.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: May 1, 2001
    Assignee: Fina Research, S.A.
    Inventors: Herve Hinnekens, Andre Demoulin