Patents by Inventor Barry Eugene Heldman

Barry Eugene Heldman 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).

  • Continuous process for the production of controlled architecture materials
    Patent number: 6448353
    Abstract: The present invention discloses a continuous process for the production of anionically-polymerized organic materials having controlled architectures. The organic materials may be made from one or more temperature-sensitive anionically-polymerizable monomers. The materials are made under plug-flow and temperature-controlled conditions.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: September 10, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: James Michael Nelson, Jeffrey J. Cernohous, Michael J. Annen, James Robert McNerney, Robert Wade Ferguson, Barry Eugene Heldman, James Alan Higgins