Patents by Inventor Nathalie Louvet-Plaisant

Nathalie Louvet-Plaisant 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).

  • Use of melatonin in a composition for stabilizing hydrophilic gelling polymers
    Patent number: 5891903
    Abstract: The present invention relates to the use of melatonin or analogues thereof in a composition as an agent for stabilizing hydrophilic gelling polymers. The invention relates more particularly to cosmetic or pharmaceutical compositions for topical use.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: April 6, 1999
    Assignee: Societe L'Oreal S.A.
    Inventors: Nathalie Louvet-Plaisant, Fran.cedilla.oise Lebreton
  • Oil-in-water cleansing emulsion having the appearance of milk
    Patent number: 5741766
    Abstract: Oil-in-water (O/W) cleansing emulsions having the appearance of a milk, comprising a self-emulsifiable composition based on fatty alcohols as emulsifying agent and an acrylic copolymer as gelling agent, useful for cleansing the skin of the face and/or of the body. These emulsions may be used in particular as a make-up removing milk.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: April 21, 1998
    Assignee: L'Oreal
    Inventors: Catherine Marion, Nathalie Louvet-Plaisant, Liliane Lukassen
  • Cosmetic skin-cleansing mask compositions containing graded spheroidal polyamide particles
    Patent number: 5690945
    Abstract: A cosmetic skin-cleansing mask composition which contains, as its principal cleansing constituent, graded or calibrated spheroidal polyamide particles which are dispersed in an aqueous gel, the particles being present in an amount greater than or equal to 12% by weight relative to the total weight of the composition.These particles impart to the composition a texture and qualities which are close to those of a cream.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: November 25, 1997
    Assignee: L'Oreal
    Inventors: Lien Bui-Bertrand, Nathalie Louvet-Plaisant