Patents by Inventor Leon E. St-Pierre

Leon E. St-Pierre 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).

  • Polymer resins with amino acid containing pendants for sorption of bile pigments and bile acids
    Patent number: 4593073
    Abstract: The invention is concerned with a novel polymer addition product comprising hydrophilic polymer backbone having a molecular weight of at least about 5,000 and to which are attached amino acid containing pendants, the pendants containing at least one arginine or lysine amino acid. The polymeric compounds of the invention are highly efficient adsorbents for bilirubin and other bile pigments, as well as for bile acids such as cholic acid.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: June 3, 1986
    Assignee: The Royal Institution for the Advancement of Learing (McGill Univ.)
    Inventors: Leon E. St-Pierre, G. Ronald Brown, Dominique S. Henning, Marlene Bouvier