Patents by Inventor Marie-Madeleine Vincent

Marie-Madeleine Vincent 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).

  • Gel of an apolar medium, its use for the preparation of water-based drilling fluids
    Patent number: 5858928
    Abstract: The invention relates to a gel made of apolar medium including:an apolar medium,a "multichain" liquid surface-active agent in acidic form, soluble or dispersible in the said apolar medium,an agent for neutralizing the said "multichain" surface-active agent,from 0.2 to 5 molecules of water per molecule of "multichain" surface-active agent,optionally at least one emulsifying agent and/or a solid filler which is soluble or insoluble in the apolar medium.This gel may be employed for the formulation of water-based drilling fluids.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: January 12, 1999
    Assignee: Rhone-Poulenc Chimie
    Inventors: Daniel Aubert, Laurent Frouin, Mikel Morvan, Marie-Madeleine Vincent
  • Cleaning composition based on an aliphatic hydrocarbon compound comprising at least two aromatic substituents
    Patent number: 5773398
    Abstract: The present invention relates to a cleaning compound comprising, by volume:1% to 99% of at least one compound (a) comprising a straight or branched hydrocarbon chain which is saturated or which has at least one unsaturation, and comprising at least two aryl or alkylaryl radicals, the aromatic nucleus of at least two aryl and/or alkylaryl radicals comprising 6 carbon atoms.99% to 1% of at least one polar aprotic compound (b) which is at least partly soluble in water and in compound (a).
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: June 30, 1998
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean-Luc Joye, Marie-Madeleine Vincent