Patents by Inventor Jean-Paul Michalon

Jean-Paul Michalon 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).

  • Active-substance vector multiparticulate system, production and use thereof
    Patent number: 6916481
    Abstract: The invention relates to an active substance vector multiparticulate system and to the production and use thereof. The object of the invention is an active-substance vector multiparticulate system comprising one or several active substances included in a hydrophilic organic matrix comprising at least one hydrosoluble and/or hydrodispersable anionic polymer which is insolubilized by a metallic cation. The invention can be specifically used in the food industry, detergents and agrochemistry.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: July 12, 2005
    Assignees: Aventis CropScience
    Inventors: Christian Prud'Homme, Etienne Fleury, Jean-Paul Michalon, Robert Zerrouk
  • Process for preparing nanoparticles
    Patent number: 5766635
    Abstract: Nanoparticles are prepared by dissolving a poly(ethylene oxide) and/or poly(propylene oxide) polylactic copolymer in an organic solvent followed by formation of nanoparticles by mixing the solution containing the polymer with an aqueous solution and by precipitation, without using an additional colloidal protective agent or by microfluidization and solvent evaporation. Nanoparticles prepared by this method are disclosed.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 16, 1998
    Assignee: Rhone-Poulenc Rorer S.A.
    Inventors: Gilles Spenleuhauer, Didier Bazile, Michel Veillard, Christian Prud'Homme, Jean-Paul Michalon
  • Nanoparticles based on a polyoxyethelene and polyactic acid block copolymer
    Patent number: 5683723
    Abstract: The invention discloses nanoparticles offering an extended time before capture by the reticulo-endothelial system. Said particles are composed of an ethylene and/or propylene polyoxide polylactic copolymer optionally mixed with a polylactic polymer.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 4, 1997
    Assignee: Rhone-Poulenc Rorer S.A.
    Inventors: Gilles Spenlehauer, Didier Bazile, Michel Veillard, Christian Prud'Homme, Jean-Paul Michalon