Patents Assigned to Tennera, LLC
  • Method of producing carbon fibers and carbon fiber composites from plant derived lignin and its blends
    Patent number: 11512173
    Abstract: Carbon fiber composites containing lignin carbon fibers are described. The lignin carbon fibers can be derived from organosolv lignin obtained from single source lignocellulosic feedstocks or combinations of such feedstocks or lignin obtained via other pulping or extraction methods. Also described are methods of preparing the carbon fiber composites.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 29, 2022
    Assignees: University of Tennessee Research Foundation, TennEra, LLC
    Inventors: David Paul Harper, Omid Hosseinaei, Dayakar Penumadu, Nathan Kieran Meek, Daniel Webb, James Mynes, Nicole Labbe, Joseph John Bozell, Timothy G. Rials, Stephen Andrew Young
  • Stabilization of Lignin Fibers
    Publication number: 20170137451
    Abstract: A process for stabilizing lignin fibers, stabilized lignin fibers made by the process and carbonized fibers made from stabilized lignin fibers. The process includes heating lignin fibers to a temperature ranging from about 100° to about 220° C. while the fibers are in an atmosphere of air and HCl gas, generated as air is bubbled through concentrated hydrochloric acid for a period of time sufficient to stabilize the lignin fibers.
    Type: Application
    Filed: July 1, 2015
    Publication date: May 18, 2017
    Applicant: Tennera, LLC
    Inventors: Zhongren YUE, Ahmad D. Vakili