Patents by Inventor Marguerite Rinaudo

Marguerite Rinaudo 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).

  • Derivatives of hyaluronic acid, their preparation process and their uses
    Patent number: 8039447
    Abstract: The present invention relates to the use of a compound having the formula (I) wherein: n represents an integer varying from 720 to 6 200, and i varies from 1 to n, Ri represents in particular OH, or a group of the formula (III) wherein k represents an integer varying from 1 to 17, and R?i represents a linear or branched alkyl chain comprising p carbon atoms, wherein p is an integer varying from 1 to 17, with the proviso that k+p is not greater than 28, and preferably not greater than 20, and wherein at least one Ri group represents a group of formula (III), for the preparation of a viscoelastic composition.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: October 18, 2011
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Agro Industrie Recherches et Developpements A.R.D.
    Inventors: Marguerite Rinaudo, Rachel Auzely, Shirin Kadi, Anthony Bresin, Erell Kubik
  • Derivatives of Hyaluronic Acid, Their Preparation Process and Their Uses
    Publication number: 20080306023
    Abstract: The present invention relates to the use of a compound having the formula (I) wherein: n represents an integer varying from 720 to 6 200, and i varies from 1 to n, Ri represents in particular OH, or a group of the formula (III) wherein k represents an integer varying from 1 to 17, and R?i represents a linear or branched alkyl chain comprising p carbon atoms, wherein p is an integer varying from 1 to 17, with the proviso that k+p is not greater than 28, and preferably not greater than 20, and wherein at least one Ri group represents a group of formula (III), for the preparation of a viscoelastic composition.
    Type: Application
    Filed: November 16, 2006
    Publication date: December 11, 2008
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Agro Industrie Recherches ET Developpments ( A.R.D. )
    Inventors: Marguerite Rinaudo, Rachel Auzely, Shirin Kadi, Anthony Bresin, Erell Kubik
  • Preparation of polysaccharide betainate type compounds, compounds obtained, their use and compositions comprising them
    Publication number: 20070160557
    Abstract: A process for preparing compounds from the polysaccharide betainate family, novel compounds so obtained, and their use in. cosmetics or in dermatology, as well as the compositions, such as cosmetic or dermatological compositions, comprising said novel compounds.
    Type: Application
    Filed: March 15, 2007
    Publication date: July 12, 2007
    Inventors: Claude Dubief, Marguerite Rinaudo, Rachel Auzely-Velty
  • Preparation of polysaccharide betainate type compounds, compounds obtained, their use and compositions comprising them
    Patent number: 7211268
    Abstract: A process for preparing compounds from the polysaccharide betainate family, novel compounds so obtained, and their use in cosmetics or in dermatology, as well as the compositions, such as cosmetic or dermatological compositions, comprising said novel compounds.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: May 1, 2007
    Assignee: L'Oreal S.A.
    Inventors: Claude Dubief, Marguerite Rinaudo, Rachel Auzely-Velty
  • Preparation of polysaccharide betainate type compounds, compounds obtained, their use and compositions comprising them
    Publication number: 20030147818
    Abstract: A process for preparing compounds from the polysaccharide betainate family, novel compounds so obtained, and their use in cosmetics or in dermatology, as well as the compositions, such as cosmetic or dermatological compositions, comprising said novel compounds.
    Type: Application
    Filed: November 15, 2002
    Publication date: August 7, 2003
    Inventors: Claude Dubief, Marguerite Rinaudo, Rachel Auzely-Velty
  • Enzymatic process for the treatment of xanthan gums to improve the filtrability of their aqueous solutions
    Patent number: 4431734
    Abstract: The filtrability of xanthan gum aqueous solutions is improved by an enzymatic treatment in two successive steps, the first step by means of a polysaccharase and the second step by means of a protease, the operating conditions of each step being such that the corresponding enzyme is active in said step.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: February 14, 1984
    Assignee: Institut Francais du Petrole
    Inventors: Marguerite Rinaudo, Michel Milas, Norbert Kohler
  • Enzymatic clarification process for improving the injectivity and filtrabhility of xanthan gums
    Patent number: 4416990
    Abstract: Enzymatic treatment, in aqueous dispersion, of a xanthan gum containing bacteria cell residues and microgels, as impurities, by means of Basidiomycete cellulase, the aqueous dispersion having a pH from 3 to 7 and containing at least 0.1 equivalent/liter of at least one salt of alkali or alkaline-earth metal, said treatment being conducted at a temperature from 25.degree. to 65.degree. C., improved the injectivity and filtrability thereof.
    Type: Grant
    Filed: October 6, 1981
    Date of Patent: November 22, 1983
    Assignee: Institut Francais du Petrole
    Inventors: Marguerite Rinaudo, Michel Milas, Norbert Kohler