Patents Assigned to Etablissement Public dit: Agence Nationale de Valorisation
  • Biodegradable implant useable as a bone prosthesis
    Patent number: 4356572
    Abstract: A biodegradable bone prosthesis or implant is made of a coherent material comprising calcium carbonate in crystalline form. The prosthesis or implant is in the form of a filler or replacement part for bone substance. It can also be in the form of a pin or screw.
    Type: Grant
    Filed: July 8, 1980
    Date of Patent: November 2, 1982
    Assignee: Etablissement Public dit: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Genevieve Guillemin, Jean-Louis Patat, Alain Patel
  • Procedures and equipment for studying surface phenomena through field effect, by means of an emission point
    Patent number: 4206408
    Abstract: A device for investigating surface phenomena by field emission contains an emission point in an evacuatable enclosure facing a fluorescent screen. The point is desorbed by a first pulse which produces sufficient heating of the point to attain substantially complete desorption and field emission or field desorption is produced by a second pulse spaced a controllable time after the desorption pulse. Repetitive measurements are possible by producing a train of the first and second pulses during which parameters can be varied and the results observed. Methods are disclosed for determining the temperature of the point from the measured field emission both by relating field emission to temperature and by relating temperature to desorption.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: June 3, 1980
    Assignee: Etablissement Public dit: Agence Nationale de Valorisation de la Recherche - A.N.V.A.R.
    Inventor: Michael Drechsler
  • Compositions of fluoride glasses and process for manufacturing fluoride glasses
    Patent number: 4141741
    Abstract: Compositions of fluorinated glasses are disclosed which result from the ternary composition of ZrF.sub.4 or HfF.sub.4, BaF.sub.2 and ThF.sub.4 or UF.sub.4, each component being within a specified range of composition indices, the indices for the separate components totalling unity.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: February 27, 1979
    Assignee: Etablissement Public dit "Agence Nationale de Valorisation de la Recherche (ANVAR)"
    Inventors: Jacques Lucas, Michel Poulain, Marcel Poulain
  • 9-Hydroxy ellipticine
    Patent number: 4045565
    Abstract: 9-hydroxy ellipticine, preparation thereof, and use thereof for the treatment of leukemias and solid tumors.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: August 30, 1977
    Assignee: Etablissement Public dit: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Jean Bernard Le Pecq, Claude Paoletti, Nguyen Dat-Xuong
  • Method and apparatus for twisting core strands
    Patent number: 4033102
    Abstract: The invention comprehends a method of twisting core strands, of the type comprising a sheath of fibres surrounding a central strand, a method in accordance with which a sliver of fibres is drawn between a point of entry of the said sliver and a pair of downstream drawing cylinders, a central strand is drawn under constant tension and is introduced without drawing into the sliver upstream of the said drawing cylinders, characterized in that a torsion in one sense and the other is conferred successively on the assembly constituted by the sliver of fibres and the central strand downstream of the said drawing cylinders.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: July 5, 1977
    Assignees: Centre Technique Industriel dit: Institut Textile de France, Etablissement Public dit: Agence Nationale de Valorisation
    Inventor: Michel E. Vanhelle