Patents by Inventor Jean-Paul Chambrette

Jean-Paul Chambrette 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).

  • Additive mixing method reducing to a minimum additive segregation and migration
    Publication number: 20030059521
    Abstract: The invention concerns a method for preparing a composition containing a superabsorbent and antimicrobial powder acting as deodorizing additive. The inventive method consists in an oven drying of a mixture of the elements of the composition, at a temperature higher than 5° C. than the additive melting point.
    Type: Application
    Filed: October 10, 2002
    Publication date: March 27, 2003
    Inventors: Christian Gancet, Jean-Paul Chambrette, Myriam Gourmand
  • Membrane purification of solutions/suspensions of polyphosphazenes
    Patent number: 5098574
    Abstract: Impure solutions or suspensions of the polyphosphazenes, e.g., those containing the reagents and/or byproducts of the chloro-substitution of a polydichlorophosphazene, are purified by contacting such impure solutions/suspension with a semipermeable membrane having a cutoff threshold corresponding to the impurities sought to be removed, and filtering such impurities therethrough, e.g., by establishing a trans-membrane pressure gradient.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: March 24, 1992
    Assignee: Atochem
    Inventors: Jean-Paul Chambrette, Daniel Morin, Jose L. Orozco, Philippe Potin
  • Preparation of polychlorophosphazene
    Patent number: 4810480
    Abstract: Polychlorophosphazene [Cl.sub.2 (O)P[NPCl.sub.2 ].sub.n Cl] is more rapidly produced by polycondensing N-(dichlorophosphoryl)-trichlorophosphazene [P.sub.2 NOCl.sub.5 ] in the presence of a catalytically effective amount of a tertiary amine.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: March 7, 1989
    Assignee: Atochem
    Inventors: Jean-Paul Chambrette, Roger de Jaeger, Philippe Potin