Patents by Inventor Leigh C. Allen

Leigh C. Allen 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).

  • Urea phenyl derivatives and their use as polypropylene nucleating agents
    Patent number: 7572849
    Abstract: Disclosed herein are urea phenyl derivatives of the formula: wherein each R is an independently selected hydrocarbyl group and n is 2 or 3, and their use as nucleating agents for propylene polymers.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: August 11, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Jin-yun Wang, Huiling Ding, Roy Russell, Leigh C. Allen, Paul E. Stott, John Wefer, David J. Sikora