Patents by Inventor Gilles Fonteneau

Gilles Fonteneau 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).

  • Publication number: 20060016224
    Abstract: The invention concerns a reaction chamber comprising a first container (1), a second container (4) connected to a conduit (6), an outer tube (3) emerging into the container (1), an outer tube (8) emerging into the conduit. The container (1) is designed to receive a sleeve glass, and the container (4) a core glass for optical fiber. The method for using said chamber, after vacuum sealing in (3a) and (8a), and heating the chamber at a sufficient temperature for melting the glasses, the chamber being in the position represented with the tube (3) in vertical position, consists: in a 180° anti-clockwise rotation about an axis perpendicular to the figure. The sleeve glass flows into the tube (3) while the core glass remains confined in the container (4); cooling the tube (3), then returning to the original position; part of the sleeve glass, maintained in liquid form in the center of the tube (3), drops into the container (1); carrying out another 180°, rotation, but clockwise.
    Type: Application
    Filed: June 12, 2003
    Publication date: January 26, 2006
    Inventors: Gilles Fonteneau, Catherine Boussard-Pledel, David Le Coq
  • Patent number: 4717691
    Abstract: Fluoroglasses, their preparation and intermediate products obtained. These glasses are characterized by containing as the forming element at least about 10% by moles of a metal fluoride or mixture of metal fluorides of the formula MF.sub.n, n being a number equal to 3 or 4, M representing a 5f transition metal when n=4 (fluoride MF.sub.4) and a 4f transition metal or yttrium when n=3 (fluoride MF.sub.3), it being understood that said glasses are free of hydrofluoric acid as the forming element.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: January 5, 1988
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Jacques Lucas, Gilles Fonteneau
  • Patent number: 4560667
    Abstract: Halogen glass is treated, while heated above its fusion temperature, with carbon disulphide. The resulting halogen glass is essentially free of parasitic absorption bands in the infra-red spectrum. The treatment with carbon disulphide apparently lowers the hydroxyl ion content and the metal-oxygen bonds sufficiently to avoid the infra-red absorption bands.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: December 24, 1985
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Jacques Lucas, Gilles Fonteneau