Patents by Inventor Patrick Cerfontaine

Patrick Cerfontaine 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 preparing lipid microparticles
    Patent number: 5100591
    Abstract: The present invention relates to a process for preparing lipid microparticles of microcrystalline appearance, of a water-insoluble substance possessing an affinity for phospholipids and of at least one phospholipid, the microparticles being stable in suspension in an aqueous solution, characterized in that:a) the said substance and the said phospholipid or phospholipids are dissolved in a common organic solvent for the said substance and for the said phospholipid or phospholipids,b) the solution of said substance and of the said phospholipid or phospholipids is mixed with an aqueous solution in an amount such that an insolubilization takes place in the form of a precipitate, andc) the organic solution is removed to recover an aqueous solution containing the microparticles in the form of microsuspensions.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: March 31, 1992
    Assignee: Medgenix Group S.A.
    Inventors: Brigitte Leclef, Patrick Cerfontaine, Jean-Marie Nicolas, Henri Wantier, Andre Trouet