Patents by Inventor Patricia Marchi

Patricia Marchi 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).

  • Cosmetic compositions comprising nanopigments
    Patent number: 6132745
    Abstract: The subject of the invention is new cosmetic compositions, based on pigment nanoparticles and on fillers, which are completely transparent and free from whitening when they are applied on the skin, which possess sufficient UV screening properties for the addition of organic screening agents to be unnecessary, which are better dispersed than the compositions of the prior art and which are outstandingly stable. These compositions, when they are used in makeup, exhibit greater homogeneity of the color and a coloring which is both transparent and more intense. The present invention also relates to methods of imparting these improved properties to makeup compositions.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: October 17, 2000
    Assignee: L'Oreal
    Inventors: Patricia Marchi-Lemann, Annick Collette, Myriam Mellul
  • Cosmetic compositions comprising nanopigments
    Patent number: 6004567
    Abstract: The subject of the invention is new cosmetic compositions, based on pigment nanoparticles and on fillers, which are completely transparent and free from whitening when they are applied on the skin, which possess sufficient UV screening properties for the addition of organic screening agents to be unnecessary, which are better dispersed than the compositions of the prior art and which are outstandingly stable. These compositions, when they are used in makeup, exhibit greater homogeneity of the colour and a colouring which is both transparent and more intense. The present invention also relates to methods of imparting these improved properties to makeup compositions.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: December 21, 1999
    Assignee: L'Oreal
    Inventors: Patricia Marchi-Lemann, Annick Collette, Myriam Mellul
  • Cosmetic composition which prevents or attenuates the photo-reactivity of titanium dioxide nanopigments
    Patent number: 5693329
    Abstract: Cosmetic composition, characterized in that it contains titanium dioxide nanopigments coated with at least aluminium derivatives in a cosmetically acceptable, fairly nonpolar medium having a conductivity of less than 100 .mu.Siemens and containing at least one fatty phase.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: December 2, 1997
    Assignee: L'Oreal
    Inventors: Patricia Marchi-Lemann, Christian Colin
  • Cosmetic composition containing solid particles coated with an amphoteric polymer
    Patent number: 5643672
    Abstract: Cosmetic composition for the skin or skin appendages comprising a dispersion of solid particles in a binder and characterized in that at least a part of said particles is introduced into the composition in the form of particles having their surface coated with at least one amphoteric polymer. The coated particles are easily dispersible, even in fatty binders, and the cosmetic compositions have good stability properties and show good adhesion to the skin and skin appendages.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: July 1, 1997
    Assignee: L'Oreal
    Inventors: Patricia Marchi, Myriam Mellul