Patents by Inventor Marie-Andree Yessine

Marie-Andree Yessine 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).

  • pH-sensitive polymer
    Patent number: 7879966
    Abstract: A pH-sensitive polymer which has cytotoxic or membranolytic properties at pH values below pH 6.5. Carriers for natural or synthetic biomolecules or active pharmaceutical ingredients using such a pH-sensitive polymer.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: February 1, 2011
    Assignees: Evonik Roehm GmbH, Universite de Montreal
    Inventors: Hans-Ulrich Petereit, Christian Meier, Klaus Schultes, Marie-Andree Yessine, Jean-Christophe Leroux
  • pH-sensitive polymer
    Patent number: 7553918
    Abstract: The invention relates to a pH-sensitive polymer which is a (meth)acrylate copolymer composed of 20 to 65% by weight acrylic and/or methacrylic acid units and 80 to 35% by weight units of C1- to C18-alkyl esters of (meth)acrylic acid, characterized in that it has a molecular weight in the range from 1 000 to 50 000 g/mol, and brings about at least 60% haemolysis at pH 5.5, and less than 5% haemolysis at pH 7.4, in a concentration of 150 ?g/ml in a cytotoxicity test with human red blood cells. The invention further relates to the use of the pH-sensitive polymer as carrier for pharmaceutically effective biomolecules or active pharmaceutical ingredients and as ingredient of corresponding dosage forms.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: June 30, 2009
    Assignees: Roehm GmbH & Co. KG, Universite de Montreal
    Inventors: Hans-Ulrich Petereit, Christian Meier, Klaus Schultes, Marie-Andree Yessine, Jean-Christophe Leroux
  • PH-sensitive polymer
    Publication number: 20060281887
    Abstract: A pH-sensitive polymer which has cytotoxic or membranolytic properties at pH values below pH 6.5. Carriers for natural or synthetic biomolecules or active pharmaceutical ingredients using such a pH-sensitive polymer.
    Type: Application
    Filed: June 28, 2006
    Publication date: December 14, 2006
    Applicants: ROEHM GMBH & CO. KG, Universite de Montreal
    Inventors: Hans-Ulrich Petereit, Christian Meier, Klaus Schultes, Marie-Andree Yessine, Jean-Christophe Leroux