Patents by Inventor Christophe Le Sausse

Christophe Le Sausse 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).

  • Ashless additive formulations suitable for hydraulic oil applications
    Publication number: 20050096236
    Abstract: An ashless additive formulation, particularly suited for hydraulic oil applications, comprising a particular concentration of a monothiophosphate ester and a dithiophosphate ester was found to have improved performance properties and good compatibility with calcium containing packages. Lubricating compositions employing these monothiophosphate and dithiophosphate esters allow for low phosphorous content lubricating oil compositions.
    Type: Application
    Filed: November 4, 2003
    Publication date: May 5, 2005
    Inventors: Christophe Le Sausse, Stephanie Palotai
  • Use of surfactants with high molecular weight for improving the filterability in hydraulic lubricants
    Patent number: 6624123
    Abstract: A hydraulic oil, a predominant amount of an oil having a viscosity suitable for lubrication, and from 0.03% to 0.06% of an agent improving filterability, corresponding to the formula R—Z. Z represents an ester of succinic acid comprising the reaction product of a succinic anhydride and an aliphatic polyhydric alcohol; or a succinimide comprising the reaction product of a succinic anhydride and a polyamine, the said reaction product being treated with an after-treatment agent. R represents a polyolefin having a molecular weight (Mn) of 500 to 2500 and an Mw/Mn ratio of 1 to 5.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: September 23, 2003
    Assignee: Chevron Chemical S.A.
    Inventors: Olivier Pascal Marie Clement, Christophe Le Sausse, Dominique Batelier, Jacques Cazin
  • USE OF SURFACTANTS WITH HIGH MOLECULAR WEIGHT FOR IMPROVING THE FILTERABILITY IN HYDRAULIC LUBRICANTS
    Publication number: 20020032127
    Abstract: A hydraulic oil, a predominant amount of an oil having a viscosity suitable for lubrication, and from 0.03% to 0.06% of an agent improving filterability, corresponding to the formula R—Z. Z represents an ester of succinic acid comprising the reaction product of a succinic anhydride and an aliphatic polyhydric alcohol; or a succinimide comprising the reaction product of a succinic anhydride and a polyamine, the said reaction product being treated with an after-treatment agent. R represents a polyolefin having a molecular weight (Mn) of 500 to 2500 and an Mw/Mn ratio of 1 to 5.
    Type: Application
    Filed: December 11, 1998
    Publication date: March 14, 2002
    Inventors: OLIVIER CLEMENT, CHRISTOPHE LE SAUSSE, DOMINIQUE BATELIER, JACQUES CAZIN