Patents by Inventor Frederic Chaput

Frederic Chaput 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 an organo-silicon sol and materials obtained from such sol
    Patent number: 6624237
    Abstract: The method consists in hydrolyzing an initial volume Vsi of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that x ⁢   ⁢ H 2 ⁢ O x ⁢ Si ≥ 10 where x H2O and x Si represent the number of moles of H2O and Si present, respectively, the concentration of the hydrolysate up to a volume substantially equal to the initial volume Vsi, leaving the concentrated hydrolysate until segregation into an aqueous phase and an organo-silicon phase, and recovery of the organo-silicon phase.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: September 23, 2003
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: John Biteau, Jean-Pierre Boilot, Frédéric Chaput
  • Method for preparing an organo-silicon sol and materials obtained from such sol
    Publication number: 20020120060
    Abstract: The method consists in hydrolysing an initial volume Vsi of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that 1 x ⁢   ⁢ H 2 ⁢ O x ⁢ Si ≥ 10
    Type: Application
    Filed: June 15, 2001
    Publication date: August 29, 2002
    Applicant: Essilor International Compagnie Generale D'Optique
    Inventors: John Biteau, Jean-Pierre Boilot, Frederic Chaput
  • Method for the fabrication of a ceramic material by hybrid chemical process and material obtained thereby
    Patent number: 5017534
    Abstract: The disclosure concerns the fabrication, by chemical process, of a ceramic material belonging to the system:Ba.sub.x Sr.sub.1-x (Ti.sub.u Zr.sub.v Hf.sub.w)O.sub.3The fabrication method comprises the following steps:preparation of an alcohol solution containing at least one titanium, zirconium or hafnium alcoholate,preparation of a determined quantity of hydrated barium hydroxide and/or hydrated strontium hydroxide in solid state;under violent shaking, dissolving of the hydroxide or hydroxides in the alcohol solution, and continuing of the reaction until a paste is obtained,drying of the paste obtained.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: May 21, 1991
    Assignee: Compagnie Europeenne de Composants Electroniques -LCC
    Inventors: Frederic Chaput, Jean-Pierre Boilot