Patents by Inventor Randall Lee Carter

Randall Lee Carter 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).

  • Polycarbonate compositions comprising hindered amine light stabilizers
    Patent number: 5856486
    Abstract: The instant invention relates to weatherable polycarbonate compositions (formulations or blends) comprising piperazinone or piperazine dione based HALS. These piperazinone or piperazine dione based HALS impart photostability to the polycarbonate formulations, thereby reducing yellowing or other forms of light induced degradation.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: January 5, 1999
    Assignee: General Electric Company
    Inventors: James Edward Pickett, Randall Lee Carter, Gary Eugene Spilman