Patents by Inventor Jean-Luc Zeh

Jean-Luc Zeh 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).

  • Process for increasing the molar mass of a cationic acryloyloxyethyltrimethylammonium chloride copolymer, and corresponding copolymers
    Publication number: 20020103331
    Abstract: A process for increasing the molar mass of a cationic copolymer of the unsaturated quaternary ammonium salt of formula (I): 1
    Type: Application
    Filed: October 5, 2001
    Publication date: August 1, 2002
    Applicant: ATOFINA
    Inventors: Jean-Luc Zeh, Lionel Sabatier, Stephane Lepizzera
  • Process for inclusion in (meth)acrylic resins of substances of liquid to solid consistency
    Patent number: 5362771
    Abstract: Inclusion blocks of a substance chosen from ion exchange resins contaminated with radioactive elements, water which can, where appropriate, contain pollutants, solid-phase wastes in the form of blocks or pulverised preparations or liquid-phase wastes are prepared. For this purpose, the substances(s) to be included is/are embedded in a (meth)acrylic resin obtained in situ by direct polymerisation, without prior preparation of a prepolymer syrup, using a monomer system based on at least one (meth)acrylic monomer possessing a high boiling point, such as dicyclopentadienyloxyethyl methacrylate.Application to the storage of industrial pollutants, in particular substances contaminated with radioactive elements; and application of the water-inclusion blocks as prosthesis materials.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: November 8, 1994
    Assignee: Elf Atochem, S.A.
    Inventors: Robert Legros, Bernard Wiegert, Jean-Luc Zeh