Patents by Inventor Valerie Maran

Valerie Maran 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).

  • Copper dihydrocarbyl dithiophosphyl dithiophosphates, their preparation and their use as additives for lubricants
    Patent number: 5132031
    Abstract: Novel products of the copper dihydrocarbyl dithiophosphyl dithiophosphate type, their preparation and their use are described.These products can be represented by the general formula: ##STR1## in which R particularly represents a substantially hydrocarbon monovalent radical with 1 to 30 carbon atoms, X and Y each represent a hydrogen atom or a substantially hydrocarbon monovalent radical with 1 to 30 carbon atoms, M represents copper in one of its two ordinary degrees of oxidation and n the degree of oxidation. The products according to the invention are usable as additives for lubricants in which they provide an effective protection against wear.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Institut Francais du Petrole
    Inventors: Maurice Born, Jean-Claude Hipeaux, Valerie Maran, Armand Rossi, Michel Thebault