Patents by Inventor Pascal Stutzmann

Pascal Stutzmann 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).

  • Microporous asbestos-free diaphragms/cathodes for electrolytic cells
    Patent number: 5470449
    Abstract: Microporous diaphragms adapted for wet-consolidation with composite cathodes for use in electrolytic cells, e.g., chlorine/soda electrolysis cells, comprise a sintered, fluoropolymer microconsolidated asbestos-free microporous fibrous sheet material, such sheet material including from 3% to 35% by weight of fluoropolymer binder, from 0% to 50% by weight of a uniformly distributed gel of an oxohydroxide of at least one metal of Groups IVA, IVB, VB and VIB of the Periodic Table or of the lanthanide or actinide series thereof, and from 20% to 95% by weight of a mixture of poly-tetrafluoroethylene (PTFE) fibers and inorganic fibers, such inorganic fibers constituting from 1% to 80% by weight of the mixture and such inorganic fibers including carbon, graphite or titanate fibers, or admixture thereof.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: November 28, 1995
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean Bachot, Pascal Stutzmann
  • Method of making microporous asbestos diaphragms/cathodes for electrolytic cells
    Patent number: 5320867
    Abstract: Microporous diaphragms adapted for wet-consolidation with composite cathodes for use in electrolytic cells, e.g., chlorine/soda electrolysis cells, comprise a sintered, fluoropolymer microconsolidated asbestos-based microporous fibrous sheet material, such sheet material including from 3% to 35% by weight of fluoropolymer binder, from 1% to 50% by weight of a uniformly distributed gel of an oxohydroxide of at least one metal of Groups IVA, IVB, VB and VIB of the Periodic Table or of the lanthanide or actinide series thereof, and from 20% to 95% by weight of fibers, at least 1% by weight of such fibers being asbestos fibers.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: June 14, 1994
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean Bachot, Pascal Stutzmann, Jean-Maurice Perineau
  • Microporous asbestos diaphragms/cathodes for electrolytic cells
    Patent number: 5092977
    Abstract: Microporous diaphragms adapted for wet-consolidation with composite cathodes for use in electrolytic cells, e.g., chlorine/soda electrolysis cells, comprise a sintered, fluoropolymer microconsolidated asbestos-based microporous fibrous sheet material, such sheet material including from 3% to 35% by weight of fluoropolymer binder, from 1% to 50% by weight of a uniformly distributed gel of an oxohydroxide of at least one metal of Groups IVA, IVB, VB and VIB of the Periodic Table or of the lanthanide or actinide series thereof, and from 20% to 95% by weight of fibers, at least 1% by weight of such fibers being asbestos fibers.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: March 3, 1992
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean Bachot, Pascal Stutzmann, Jean-Maurice Perineau