Patents by Inventor Bonita Kristofferson Marcus

Bonita Kristofferson Marcus 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).

  • Wood-polymer-zeolite composites
    Patent number: 7550404
    Abstract: Composite materials containing a cellulose component such as wood fibers or particles, a zeolite component, and a polymer such as polyethylene, polypropylene, or polyvinyl chloride are able to provide good physical strength performance. The composites may be prepared by any of a number of mixing and forming processes, and may be used for making lumber and other structural materials.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: June 23, 2009
    Assignee: PQ Corporation
    Inventors: Erin D. Fisher, Roman W. Wypart, Bonita Kristofferson Marcus