Patents by Inventor Maurice Maurin

Maurice Maurin 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).

  • Process for dissolution of a crystalline material
    Patent number: 5275697
    Abstract: The present invention relates to a process for controlled dissolution of a crystalline material consisting of a number of kinds of ions, in a solution containing a solvent for the crystalline material. Before dissolution, the solution contains at least two kinds of ions of the crystalline material. The molar concentration of ion of each kind is higher than zero and lower than the molar concentration of ion of each kind which the solution would have at saturation if it contained all of the constituent ions of the crystalline material, under the temperature and pressure conditions of the dissolution.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: January 4, 1994
    Assignee: Compagnie d'Electronique et de Piezo-Electricite C.E.P.E.
    Inventors: Etienne Philippot, Aline Goiffon, Maurice Maurin, Olivier Cambon, Alain Ibanez, Jean-Pierre Aubry
  • Process for the preparation of berlinite crystals with high Q factor
    Patent number: 4990217
    Abstract: The invention relates to a process for the preparation of berlinite crystals AlPO.sub.4, with a high Q factor, from seeds or crystalline flakes of AlPO.sub.4, by a hydrothermal method. It is characterized in that the crystallization solution is a sulfuric solution of AlPO.sub.4. The invention also relates to the berlinite monocrystals obtained by this process.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: February 5, 1991
    Assignees: Centre National de la Recherche Scientifique (CNRS), Etat Francais, represente par le Ministre des PTT (Centre National d'Etudes des Telecommunications)
    Inventors: Etienne Philippot, Jean-Claude Jumas, Bernard Capelle, Yves Toudic, Jacques Detaint, Jacquie Schwartzel, Aline Goiffon, Maurice Maurin, Jean-Claude Doukhan, Albert Zarka
  • Silver, thallium, copper and tellurium-based thermoelectrical semiconductive thermoelectric material, preparation and application to thermoelectric converters
    Patent number: 4929282
    Abstract: Silver, thallium, copper and tellurium-based thermoelectric semiconductor materials, characterized in that they are represented by the general formula (I)Ag.sub.x Cu.sub.y T1Te.sub.1+z (I)wherein, x, y and z verify the ratios:0.55<x<0.75; 0.25<y<0.40 and 0<z<0.10.
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: May 29, 1990
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Gerard Brun, Rose-Marie Marin-Ayral, Maurice Maurin, Bernard Pistoulet, Jean-Claude Tedenac
  • Vitreous materials with ionic conductivity, the preparation of same and the electrochemical applications thereof
    Patent number: 4513070
    Abstract: Electrochemical devices use a vitreous material having a general formulaxAaR.sub.b --yNmRc--zN.sub.n Y.sub.pwherein A is Si, Ge, P, S, B, Nb, As, V, Cr or Mo; R is O, S or Se; N is Li, Na, K or Ag and Y is I, Br, Cl, F, ClO.sub.4, CF.sub.3, SO.sub.3, SCN or SO.sub.4 with the proviso that the material contain at least two salts NY. Such materials have increased cationic conductivity.
    Type: Grant
    Filed: February 8, 1983
    Date of Patent: April 23, 1985
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Brigitte Carette, Ali Kone, Jean-Louis Souquet, Michel Ribes, Maurice Maurin