Patents by Inventor Gilles Darvaux-Hubert

Gilles Darvaux-Hubert 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).

  • Method for working or forming metals in the presence of aqueous lubricants based on methanesulfonic acid
    Patent number: 7730618
    Abstract: A method for working or forming metals which consists in usings an aqueous lubricant containing as water-soluble extreme pressure additive, methanesulphonic acid or water-soluble methanesulphonic acid salt. The water-soluble methane sulphonic acid salt is an alkali or alkaline-earth, ammonium, alkanol amine or ethoxylated fatty amine salt. The inventive aqueous lubricants have good extreme pressure properties and good properties with respect to corrosion.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: June 8, 2010
    Assignee: Arkema France
    Inventors: Gilles Darvaux-Hubert, Fabrice Domingues Dos Santos, François Guillemet
  • Method for working or forming metals in the presence of aqueous lubricants based on methanesulfonic acid
    Publication number: 20050044912
    Abstract: The invention concerns a method for working or forming metals which consists in usings an aqueous lubricant containing as water-soluble extreme pressure additive, methanesulphonic acid or water-soluble methanesulphonic acid salt. The water-soluble methane sulphonic acid salt is an alkali or alkaline-earth, ammonium, alkanol amine or ethoxylated fatty amine salt. The inventive aqueous lubricants have good extreme pressure properties and good properties with respect to corrosion.
    Type: Application
    Filed: November 8, 2002
    Publication date: March 3, 2005
    Inventors: Gilles Darvaux-Hubert, Fabrice Domingues Dos Santos, Francois Guillemet
  • Multipurpose lubricant based on phosphorous and sulphur compounds
    Publication number: 20030176299
    Abstract: The multifunctional lubricant according to the invention comprises at least one phosphoric ester (A) of general formula: 1
    Type: Application
    Filed: December 20, 2002
    Publication date: September 18, 2003
    Inventors: Francois Guillemet, Gilles Darvaux-Hubert