Patents by Inventor Cédric Froidefond

Cédric Froidefond 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).

  • Precursor compounds of alkaline earth metal or rare earth metal aluminates method production and use thereof particularly as precursors for luminophores
    Patent number: 7625546
    Abstract: The invention relates to alkaline-earth or rare-earth metal aluminate precursor compounds, to their method of preparation and to their use in particular as phosphor precursors. These alkaline-earth or rare-earth metal aluminate precursor compounds are essentially crystallized in the form of a transition alumina and in the form of substantially spherical and chemically homogeneous particles including pores whose mean diameter is of at least 10 nm.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: December 1, 2009
    Assignee: Rhodia Electronics & Catalysis
    Inventors: Benjamin Delespierre, Cédric Froidefond, Thierry Le Mercier
  • Precursor compounds of alkaline earth metal or rare earth metal aluminates method production and use thereof particularly as precursors for luminophores
    Publication number: 20060273286
    Abstract: The invention relates to alkaline-earth or rare-earth metal aluminate precursor compounds, to their method of preparation and to their use in particular as phosphor precursors. These alkaline-earth or rare-earth metal aluminate precursor compounds are essentially crystallized in the form of a transition alumina and in the form of substantially spherical and chemically homogeneous particles including pores whose mean diameter is of at least 10 nm.
    Type: Application
    Filed: May 19, 2004
    Publication date: December 7, 2006
    Inventors: Benjamin Delespierre, Cedric Froidefond, Thierry Le Mercier