Patents by Inventor Guillaume Viau

Guillaume Viau 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 producing a permanent or soft magnet
    Patent number: 12046398
    Abstract: A method for producing a permanent or soft magnet including the following steps: a) providing: a solution containing a solvent in which are dispersed a set of objects which possess a permanent magnetic moment; a substrate on which are fixed to the surface or within a cavity that it may have, a 1st pad and a 2nd pad, said 1st pad includes a face facing and parallel to a face that the 2nd pad includes; b) the solution is deposited on the surface of the substrate or, as the case may be, within its cavity; c) the substrate is placed in a magnetic field so that the set of objects are grouped together between the face of the 1st pad and the face of the 2nd pad so as to form a permanent magnet.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: July 23, 2024
    Assignees: INSTITUT NATIONAL DES SCIENCES APPLIQUÉES, UNIVERSITE PAUL SABATIER (TOULOUSE III), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Lise-Marie Lacroix, Guillaume Viau, Thierry Leichle, Pierre Moritz
  • METHOD FOR PRODUCING A PERMANENT OR SOFT MAGNET
    Publication number: 20220059261
    Abstract: A method for producing a permanent or soft magnet including the following steps: a) providing: a solution containing a solvent in which are dispersed a set of objects which possess a permanent magnetic moment; a substrate on which are fixed to the surface or within a cavity that it may have, a 1st pad and a 2nd pad, said 1st pad includes a face facing and parallel to a face that the 2nd pad includes; b) the solution is deposited on the surface of the substrate or, as the case may be, within its cavity; c) the substrate is placed in a magnetic field so that the set of objects are grouped together between the face of the 1st pad and the face of the 2nd pad so as to form a permanent magnet.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 24, 2022
    Applicants: INSTITUT NATIONAL DES SCIENCES APPLIQUÉES, UNIVERSITE PAUL SABATIER TOULOUSE III, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Lise-Marie LACROIX, Guillaume VIAU, Thierry LEICHLE, Pierre MORITZ
  • Process for obtaining iron or iron-based powders by organic liquid phase precipitation
    Patent number: 5925166
    Abstract: The present invention relates to a process for obtaining an iron powder, which may incorporate nickel and/or cobalt, by organic liquid phase precipitation. This process comprises a stage of introducing metal precursors into a basic polyol or optionally simple alcohol solution, a stage of heating said reaction medium to obtain a metal precipitate and a stage of recovering and treating said precipitate to obtain the desired powder.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: July 20, 1999
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Guillaume Viau, Fernand Fievet, Fran.cedilla.oise Fievet