Patents by Inventor Jean Bigot

Jean Bigot 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: 20200110217
    Abstract: A few-mode optical fiber including a core's refractive-index profile ?n(r) of trapezoid-like shape. The optical core having a center part of radius R1 and a transition part ranges from the radius R1 to a radius R2, such that R2>R1 with R2 between 6.8 and 11.5 ?m, said refractive-index profile being defined by a surface integral of the core index profile of between 180×10?3 and 270×10?3 ?m; a transition slope S of between 1.7×10?3 and 12×10?3 ?m?1; with ?n1 and ?n2 the refractive-index difference respectively of the center part of the optical core and of the cladding part adjacent to the optical core, with respect to the outer optical cladding.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Inventors: Marianne Bigot, Jean-Baptiste Trinel, Pierre Sillard, Louis-Anne De Montmorillon
  • Patent number: 8069628
    Abstract: The invention relates to ring furnaces of which at least one of the inner partitions is formed by a plurality of bricks made of refractory material including at least a first brick and a second brick placed above or below a third brick and separated from one another by a space of width J, in which the first brick has at least one recess on its assembly face opposite the third brick, the third brick has at least one projection on its assembly face facing the first brick, wherein the projection is inserted into the recess, the dimension E of said recess in the longitudinal direction of the partition is greater than the dimension B of said first projection in the same direction, and said recess is positioned at a determined distance Se from the end face adjacent to said space.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: December 6, 2011
    Assignee: Aluminum Pechiney
    Inventors: Christian Jonville, Jean Bigot
  • Publication number: 20090126306
    Abstract: The invention relates to ring furnaces of which at least one of the inner partitions is formed by a plurality of bricks made of refractory material including at least a first brick (15a) and a second brick (15b) placed above or below a third brick (15c) and separated from one another by a space (13, 14) of width J, in which the first brick (15a) has at least one recess (158d, 158?d) on its assembly face opposite the third brick (15c), the third brick (15c) has at least one projection (155d, 155?d) on its assembly face facing the first brick (15a), wherein the projection is inserted into the recess, the dimension E of said recess (158d) in the longitudinal direction of the partition is greater than the dimension B of said first projection (155d) in the same direction, and said recess (158d) is positioned at a determined distance Se from the end face (152) adjacent to said space (13, 14).
    Type: Application
    Filed: July 10, 2006
    Publication date: May 21, 2009
    Applicant: ALUMINIUM PECHINEY
    Inventors: Christian Jonville, Jean Bigot
  • Patent number: 4521244
    Abstract: A cryogenic fluid in the liquid phase is put in contact with a metal material maintained in a closed treating vessel, the cryogenic fluid which contains the solid particles formed is exhausted from the vessel, and the solid particles are separated from the cryogenic fluid and collected. The metal material is heated by induction heating with a high-frequency current and maintained in levitation in the cryogenic liquid. The process is applicable to the production of ultra-fine powders from metals which are only slightly volatile.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: June 4, 1985
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Albert-Gilbert Goursat, Gilles Vernet, Jean-Francis Rimbert, Jean Foulard, Thierry Darle, Jean Bigot