Patents by Inventor Andre Maisonnat

Andre Maisonnat 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).

  • Method for the preparation of a composition of nanoparticles of at least one crystalline metal oxide
    Patent number: 7704413
    Abstract: The invention relates to a method for the preparation of a composition of nanoparticles of at least one crystalline metal oxide from at least one organometallic precursor. One precursor(s) which can react spontaneously to oxidation is selected; a liquid solution of the precursor(s) is produced in a solvent non-aqueous medium, and the liquid solution is placed in contact with at least one oxidant in adapted reactional conditions in order to directly result in the production of nanoparticles of crystalline metal oxide(s). The invention also relates to a composition of nanoparticles obtained in the form of a colloidal liquid solution.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 27, 2010
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Myrtil Kahn, Miguel Monge, André Maisonnat, Bruno Chaudret
  • Method for the preparation of a composition of nanoparticles of at least one crystalline metal oxide
    Publication number: 20060245998
    Abstract: The invention relates to a method for the preparation of a composition of nanoparticles of at least one crystalline metal oxide from at least one organometallic precursor. One precursor (s) which can react spontaneously to oxidation is selected; a liquid solution of the precursor(s) is produced in a solvent non-aqueous medium, and the liquid solution is placed in contact with at least one oxidant in adapted reactional conditions in order to directly result in the production of nanoparticles of crystalline metal oxide(s). The invention also relates to a composition of nanoparticles obtained in the form of a colloidal liquid solution.
    Type: Application
    Filed: April 6, 2004
    Publication date: November 2, 2006
    Inventors: Myrtil Kahn, Miguel Monge, André Maisonnat, Bruno Chaudret
  • Method of forming metal colloids, metal colloids and method of forming a metal oxide sensitive layer for a chemical sensor device
    Patent number: 6395053
    Abstract: A method of forming a metal colloid comprising a plurality of particles, each particle comprising a core of a metal, is described. The method comprises the steps of providing an organometallic precursor comprising the metal, combining the organometallic precursor and a solvent, which comprises water molecules, heating the combination of organometallic precursor and solvent so that the organometallic precursor decomposes to form a solution including the metal colloid and by-products, and removing the by-products to provide the metal colloid.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: May 28, 2002
    Assignee: Motorola, Inc.
    Inventors: Pierre Fau, Celine Nayral, Bruno Chaudret, Andre Maisonnat