Patents by Inventor Claude Vigneron

Claude Vigneron 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).

  • Particulate vectors for improving oral absorption of active principles
    Patent number: 8052998
    Abstract: The invention concerns particulate vectors designed to improve oral absorption of active principles, characterized in that they consist of a polymeric matrix comprising at least a biodegradable polymer associated with at least a polycationic polymer.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: November 8, 2011
    Assignee: Laboratorios Farmaceuticos Roui, S.A.
    Inventors: Philippe Maincent, Nathalie Ubrich, Claude Vigneron
  • Particulate vectors for improving oral absorption of active principles
    Publication number: 20050013866
    Abstract: The invention concerns particulate vectors designed to improve oral absorption of active principles, characterised in that they consist of a polymeric matrix comprising at least a biodegradable polymer associated with at least a polycationic polymer.
    Type: Application
    Filed: July 5, 2001
    Publication date: January 20, 2005
    Inventors: Philippe Maincent, Nathalie Ubrich, Claude Vigneron
  • Macromolecular conjugates of hemoglobin, a procedure for their preparation and their uses
    Patent number: 5110909
    Abstract: The subject of the invention is a procedure for the preparation of water-soluble macromolecular conjugates of hemoglobin, characterized in that:in the first step, Z sites are bound to a polymer P, the Z sites containing, on the one hand, at least one negative charge borne for example by sulfate groups and intended to lead to the formation of an ionic linkage with hemoglobin, and containing, on the other hand, at least one carboxylic group for example intended to lead to the formation of a covalent linkage with hemoglobin,then in the second step, the polymer P containing the Z site(s) is made to react with hemoglobin in the oxygenated form in order to form, on the one hand, at least one ionic linkage between at least one of the Z sites borne by the polymer and hemoglobin and, on the other hand, at least one covalent linkage between the same Z site mentioned above borne by the polymer and hemoglobin.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: May 5, 1992
    Assignee: Institut Merieux
    Inventors: Edith Dellacherie, Michele Leonard, Daniel Sacco, Claude Vigneron
  • Macromolecular conjugates of hemoglobin, a procedure for their preparation and their uses
    Patent number: 5079337
    Abstract: The subject of the invention is a water-soluble macromolecular conjugate of hemoglobin characterized in that it is constitutedon the one hand, by hemoglobin,on the other, by a water-soluble polymer P containing polar groups, this macromolecular conjugate contains Z sites, bound to the polymer P and containing at least one negative charge carried for example by sulfate groups, the polymer P being bound to hemoglobinon the one hand, through the intermediary of at least one linkage established between at least one of the Z sites contained in the polymer and hemoglobin,and, on the other, through the intermediary of at least one covalent linkage established between the polymer and hemoglobin, or between at least one of the Z sites contained in the polymer and hemoglobin.The macromolecular conjugates according to the invention exhibit a lower affinity for oxygen than that of free hemoglobin.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: January 7, 1992
    Assignee: Pasteur Merieux Serums et Vaccins S.A.
    Inventors: Michele Leonard, Edith Dellacherie, Jean M. L. Neel, Claude Vigneron, Pierre Labrude