Patents by Inventor Thierry Verrechia

Thierry Verrechia 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).

  • Microspheres, process for their preparation and their use
    Patent number: 6120805
    Abstract: Biocompatible microspheres containing one or more active principals, a biodegradable and biocompatible polymer and a surface-active agent which is also biodegradable and biocompatible, contain less than 10 ppm of heavy metals. These microspheres are prepared by providing a solution of the polymer and of the active principal in a water-immiscible solvent which is more volatile than water and mixing with an aqueous solution of the surface-active agent, followed by evaporation of the solvent.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: September 19, 2000
    Assignee: Rhone-Poulenc Rorer SA
    Inventors: Gilles Spenlehauer, Michel Veillard, Thierry Verrechia