Patents by Inventor Donald Robert Hallenbeck

Donald Robert Hallenbeck 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).

  • Stabilizer blend for organic polymer compositions; stabilized polymer compositions and method of stabilizing polymers
    Patent number: 6225387
    Abstract: An organohalide-flame retardant polymer containing as a stabilizer blend: a) an acid scavenger, for example a hydrotalcite or an amorphous basic aluminum magnesium carbonate; b) a heat stabilizer comprising an organotin compound; and c) a polyhydroxyaliphatic costabilizer.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: May 1, 2001
    Assignee: Great Lakes Chemical Corporation
    Inventors: Donald Robert Hallenbeck, Cindy Nancy Doumen, Anne-Marie Prins