Patents by Inventor Nathalie Collin

Nathalie Collin 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).

  • Water-in-oil emulsion containing retinol, its use and its packaging
    Patent number: 5800596
    Abstract: A device for packaging a product comprising: i) a dispensing device such that the product is not brought into contact with the environment, ii) constituent walls which are impermeable to gases and to visible-ultraviolet light, wherein a surface of the walls in contact with the product is non-metallic; and iii) an oxygen-trapping device.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: September 1, 1998
    Assignee: L'Oreal
    Inventors: Nathalie Collin, Eric Quemin
  • Salicylic acid derivative as a stabilizer for an oil-in-water emulsion
    Patent number: 5667789
    Abstract: The invention relates to the use of a salicylic acid derivative salified with a base, as a stabilizer for an oil-in-water emulsion. This salified derivative has the same properties as its acidic homologue, while at the same time having a less irritating nature. This salified derivative is, in particular, an n-alkanoyl-5-salicylic acid salified with an amphoteric base such as lysine or arginine. The present compositions are more especially intended for the cosmetic and dermatological fields.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: September 16, 1997
    Assignee: L'Oreal
    Inventors: Nathalie Collin, Eric Quemin, Didier Candau
  • Water-in-oil emulsion containing retinol its use
    Patent number: 5656672
    Abstract: The invention relates to a water-in-oil emulsion containing retinol, an oil phase, an aqueous phase and an agent for emulsifying the aqueous phase in the oil phase, the oil phase containing at least one organic solvent for retinol which is liquid at room temperature, and the pH of the aqueous phase being basic, so as to stabilize the retinol for at least two months at 45.degree. C.This emulsion is for cosmetic or dermatological use.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: August 12, 1997
    Assignee: L'Oreal
    Inventors: Nathalie Collin, Eric Quemin
  • Surfactant-free water-in-oil emulsion
    Patent number: 5643555
    Abstract: An emulsion of an aqueous phase in an oily phase free from surfactant, containing finely divided solid spherical particles of polyalkylsilsesquioxane which ensure the dispersion of the aqueous phase in the oily phase.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 1, 1997
    Assignee: L'Oreal
    Inventors: Nathalie Collin, Didier Candau
  • Emulsion containing stabilized ascorbic acid, cosmetic treatment process using it and uses thereof
    Patent number: 5629004
    Abstract: An emulsion containing stabilized ascorbic acid, alone or as a mixture with another acid, such that the aqueous phase has an acidic pH, which is at most equal to 3.5, with the emulsion further containing an emulsifying agent formed of dimethiconecopolyol or alkyldimethiconecopolyol is provided along with its use in the cosmetics, dermatological and/or veterinary fields.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: May 13, 1997
    Assignee: L'Oreal
    Inventors: Didier Candau, Nathalie Collin
  • Emulsion containing stabilized ascorbic acid, cosmetic treatment process using it and uses thereof
    Patent number: 5552446
    Abstract: An emulsion containing stabilized ascorbic acid, alone or as a mixture with another acid, such that the aqueous phase has an acidic pH, which is at most equal to 3.5, with the emulsion further containing an emulsifying agent formed of dimethiconecopolyol or alkyldimethiconecopolyol is provided along with its use in the cosmetics, dermatological and/or veterinary fields.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: September 3, 1996
    Assignee: L'Oreal
    Inventors: Didier Candau, Nathalie Collin