Patents by Inventor Paul G. Hayes

Paul G. Hayes 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).

  • Catalysts for the polymerization of cyclic esters
    Patent number: 8193112
    Abstract: The present disclosure relates to cationic divalent metal catalysts useful for the polymerization of cyclic esters, methods for their preparation and uses thereof.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: June 5, 2012
    Assignee: University of Lethbridge
    Inventors: Paul G. Hayes, Craig Wheaton
  • CATALYSTS FOR THE POLYMERIZATION OF CYCLIC ESTERS
    Publication number: 20100130753
    Abstract: The present disclosure relates to cationic divalent metal catalysts useful for the polymerization of cyclic esters, methods for their preparation and uses thereof.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 27, 2010
    Applicant: UNIVERSITY OF LETHBRIDGE
    Inventors: Paul G. Hayes, Craig Wheaton