Patents by Inventor Philippe Gabillet

Philippe Gabillet 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).

  • Viscosity additive for lubricating oils, process for its preparation and lubricating compositions based on the said additive
    Patent number: 5108635
    Abstract: A composition of matter, particularly useful as a viscosity additive comprising:6 to 15 parts by weight of a 60/40-54/46 ethylene/propylene copolymer of Mw 155,000-250,000 (OCP),2 to 8 parts by weight of a poly(C.sub.1 -C.sub.20 alkyl methacrylate) of Mw 30,000-150,000 (PMA) with a PMA/OCP ratio of 1/5 to 1/1, andthe complement to 100 parts by weight of diluent oil. Also disclosed are lubricating compositions comprising the above additive composition, preferably in an amount of from 0.1 to 10% by weight based on the weight of lubricating oil.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: April 28, 1992
    Assignee: Societe Francaise d'Organo Synthese
    Inventors: Philippe Gabillet, Claudie Willemin, Bernard Chauvel
  • Transesterification of methyl methacrylate
    Patent number: 4791221
    Abstract: Methyl methacrylate is efficiently transesterified with a heavy alcohol in the presence of (i) defined amounts of a lithium catalyst incrementally added to the reaction medium, and (ii) an azeotrope-forming compound which forms, together with the methanol produced, an azeotrope distilling at a temperature of less than about 60.degree. C.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: December 13, 1988
    Assignee: Francaise d'Organo Synthese
    Inventor: Philippe Gabillet