Patents by Inventor Emmanuel Puchois

Emmanuel Puchois 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).

  • Superabsorbent powders of high absorption and high capillary suction
    Patent number: 6458896
    Abstract: Certain mixtures of two superabsorbent powders having very different capillary suctions exhibit a resulting capillary suction which approaches the higher value. The resulting mixtures simultaneously exhibit a high capillary suction and a high intrinsic absorption capacity.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: October 1, 2002
    Assignee: Elf Atochem, S.A.
    Inventors: Christian Collette, Manuel Hidalgo, Andre Kowalik, Fabienne Lebendenko, Emmanuel Puchois
  • Shell/core particulates of superabsorbent polymers
    Patent number: 5976696
    Abstract: Shell/core distortion-resistant particulates of a partially crosslinked superabsorbent polymer, the gradient of partial crosslinking of which being to such extent that the shells are harder and less flexible than the cores thereof, have a capacity to absorb 0.9% saline water of at least 50 g/g and the modulus of which is at least 35,000 Pa; a bed of a saline water gel of the subject particulates has a saline water absorption of at least 20 g/g and a porosity of at least 500 g.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: November 2, 1999
    Assignee: Elf Atochem, S.A.
    Inventors: Christian Collette, Manuel Hidalgo, Andre Kowalik, Emmanuel Puchois
  • Process for obtaining polymers which are superabsorbent for water and aqueous fluids in the form of particle aggregates
    Patent number: 5807916
    Abstract: The process consists in the agglomeration of fine particles of superabsorbent polymer, carried out by introducing an aqueous solution of monomer into a slurry of aqueous polymer dispersed within a hydrocarbon liquid, this introduction being performed directly at the temperature and in conditions of polymerization of the monomer. A superabsorbent product is thus obtained in a very good yield, in the form of aggregates of particles such that the fraction passing through a 100-micron screen is less than 1%.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: September 15, 1998
    Assignee: Elf Atochem S. A.
    Inventors: Christian Collette, Manuel Hidalgo, Andre Kowalik, Emmanuel Puchois, Shu-Rong Rebre