Patents by Inventor Cecilia L. Stevens

Cecilia L. Stevens 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).

  • Performance enhancement in the stabilization of organic materials
    Patent number: 7691922
    Abstract: The addition of zinc borate alone or together with a hindered amine light stabilizer and ultra-violet light absorber to organic materials such as thermoplastic polyolefin resin, as is common in wood-plastic composites, provides a substantial reduction in the ultra-violet light degradation of the resin in comparison with similar materials made without zinc borate. This could provide substantial improvements in the long term durability of wood-plastic composites and other organic materials which are used in exterior environments and subject to ultra-violet exposure from the sun.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: April 6, 2010
    Assignee: U.S. Borax Inc.
    Inventors: Mark J. Manning, Marek J. Gnatowski, Christine Mah, Cecilia L. Stevens
  • Performance Enhancement in the Stabilization of Organic Materials
    Publication number: 20080182931
    Abstract: The addition of zinc borate alone or together with a hindered amine light stabilizer and ultra-violet light absorber to organic materials such as thermoplastic polyolefin resin, as is common in wood-plastic composites, provides a substantial reduction in the ultra-violet light degradation of the resin in comparison with similar materials made without zinc borate. This could provide substantial improvements in the long term durability of wood-plastic composites and other organic materials which are used in exterior environments and subject to ultra-violet exposure from the sun.
    Type: Application
    Filed: July 1, 2005
    Publication date: July 31, 2008
    Applicant: Waters Investments Limited
    Inventors: Mark J. Manning, Marek J. Gnatowski, Christine Mah, Cecilia L. Stevens