Patents by Inventor Guy Vanlerbergue

Guy Vanlerbergue 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).

  • Process for preparing submicron particles in the presence of lipid vesicles, and corresponding compositions
    Patent number: 5670099
    Abstract: Process for obtaining submicronic particles, for example, pigments in the presence of lipidic vesicles having a lamellar structure, starting with at least one precursor of said particles involves preparing a dispersion of vesicles starting with at least one lipid capable of forming the walls of the vesicles and an aqueous phase E intended to be encapsulated in the said vesicles, and optionally an aqueous phase D, intended to form a dispersion medium of the said vesicles, at least one precursor of the said vesicles being dissolved in phase E and/or D, before and/or during and/or after the preparation of the vesicular phase, at least one agent capable of transforming the said precursor(s) into sought after particles being reacted with it (them) after introduction into the preparation medium.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: September 23, 1997
    Assignee: L'Oreal
    Inventors: Jean-Luc Morancais, Alain Lety, Guy Vanlerbergue
  • Process for preparing submicron particles in the presence of lipid vesicles, and corresponding compositions
    Patent number: 5425993
    Abstract: Process for obtaining submicronic particles, for example, pigments in the presence of lipidic vesicles having a lamellar structure, starting with at least one precursor of said particles involves preparing a dispersion of vesicles starting with at least one lipid capable of forming the walls of the vesicles and an aqueous phase E intended to be encapsulated in the said vesicles, and optionally an aqueous phase D, intended to form a dispersion medium of the said vesicles, at least one precursor of the said vesicles being dissolved in phase E and/or D, before and/or during and/or after the preparation of the vesicular phase, at least one agent capable of transforming the said precursor(s) into sought after particles being reacted with it (them) after introduction into the preparation medium.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: June 20, 1995
    Assignee: L'Oreal
    Inventors: Jean-Luc Morancais, Alain Lety, Guy Vanlerbergue