Patents by Inventor Cederic Lebre

Cederic Lebre 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).

  • Preparation of a composition of a swelling tot-tot interlayer
    Patent number: 7794625
    Abstract: A method for preparing a composition including mineral particles, that is swelling TOT-TOT interlayer particles, formed by interlayering between: at least one non-swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and of formula —(SixGe1?x) 4M3O10(OH)2—, and at least one swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and at least one interlaminar space between two consecutive elementary laminae, the swelling mineral phase being of formula —(SixGe1?x)4M3??O10(OH)2, (M2+)??.nH2O. The composition is prepared by subjecting a gel containing silicon, germanium and metal, of chemical formula —(SixGe1?x)4M3O11,nH2O—, in the liquid state to a hydrothermal treatment which is carried out over a defined period of time and at a temperature of between 150° C. and 300° C.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: September 14, 2010
    Assignees: Luzenac Europe SAS, Centre National de la Recherche Scientifique (C.N.R.S)
    Inventors: Francois Martin, Jocelyne Ferret, Cederic Lebre, Sabine Petit, Olivier Grauby, Jean-Pierre Bonino, Didier Arseguel, Alain Decarreau, Eric Ferrage