Patents by Inventor Aurore Krivaya

Aurore Krivaya 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 preparing beads containing a crosslink mineral/inorganic matrix
    Patent number: 7528178
    Abstract: A process for the preparation of beads having a crosslinked inorganic matrix with a size controlled in the millimeter range, which comprises pouring a suspension comprising a precursor of the inorganic matrix and an alginate drop wise into a solution of a polyvalent cation salt with a pH of less than 3, to obtain a reaction medium, in which the alginate gels, and crosslinking the precursor of the inorganic matrix by a sol-gel process.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: May 5, 2009
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Eric Prouzet, Miriam Tokumoto, Aurore Krivaya
  • Method for preparing beads containing a crosslinked mineral matrix
    Publication number: 20060134152
    Abstract: The invention relates to a process for the preparation of beads comprising a crosslinked inorganic matrix and to the beads obtained. The process consists in preparing gelled beads by pouring a suspension comprising a precursor of the inorganic matrix and an alginate dropwise into a solution of a polyvalent cation salt, the pH of which is less than 3, and in crosslinking the precursor of the inorganic matrix by a sol-gel process. The process is of particular use for the preparation of crosslinked silica or alumina beads having a size of the order of a millimeter.
    Type: Application
    Filed: July 18, 2003
    Publication date: June 22, 2006
    Inventors: Eric Prouzet, Miriam Tokumoto, Aurore Krivaya