Patents by Inventor Surendar R. Venna

Surendar R. Venna 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).

  • Crosslinked polyphosphazene blends for gas separation membranes
    Patent number: 11866555
    Abstract: The disclosed invention relates to a composition comprising a crosslinked blend of polyphosphazene polymers. The composition comprises a first polyphosphazene and a second polyphosphazene, where the first polyphosphazene and the second polyphosphazene being bound by a thiol bearing crosslinking agent. Such compositions are useful as a membrane material for the separation of gasses in a gaseous mixture.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: January 9, 2024
    Assignee: Energy, United States Department of
    Inventors: David Hopkinson, Victor Armanda Kusuma, Surendar R. Venna, Joshua S. McNally, Christopher J. Orme, Frederick F. Stewart
  • CROSSLINKED POLYPHOSPHAZENE BLENDS FOR GAS SEPARATION MEMBRANES
    Publication number: 20230383063
    Abstract: The disclosed invention relates to a composition comprising a crosslinked blend of polyphosphazene polymers. The composition comprises a first polyphosphazene and a second polyphosphazene, where the first polyphosphazene and the second polyphosphazene being bound by a thiol bearing crosslinking agent. Such compositions are useful as a membrane material for the separation of gasses in a gaseous mixture.
    Type: Application
    Filed: July 27, 2023
    Publication date: November 30, 2023
    Inventors: David Hopkinson, Victor Armanda Kusuma, Surendar R. Venna, Joshua S. McNally, Christopher J. Orme, Frederick F. Stewart
  • Mechanically robust PIM-1 and polyphosphazene blended polymer for gas separation membranes
    Patent number: 11219857
    Abstract: Accordingly, it is an object of this disclosure to provide a blend polymeric membrane to provide the separation of CO2 from a gaseous mixture. The blend polymeric membrane comprises a blend of polyphosphazene and polymers of intrinsic microporosity. Further, the present disclosure also provides a method of use for the blend polymeric membrane for the separation of gases in a gaseous mixture.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: January 11, 2022
    Assignee: United States Department of Energy
    Inventors: Ali Sekizkardes, Victor Armanda Kusuma, Surendar R. Venna, David Hopkinson
  • Surface functionalization of metal organic frameworks for mixed matrix membranes
    Patent number: 9597643
    Abstract: Mixed Matrix Membrane (MMM) are composite membranes for gas separation and comprising a quantity of inorganic filler particles, in particular metal organic framework (MOF), dispersed throughout a polymer matrix comprising one or more polymers. This disclosure is directed to MOF functionalized through addition of a pendant functional group to the MOF, in order to improve interaction with a surrounding polymer matrix in a MMM. The improved interaction aids in avoiding defects in the MMM due to incompatible interfaces between the polymer matrix and the MOF particle, in turn increasing the mechanical and gas separation properties of the MMM. The disclosure is also directed to a MMM incorporating the surface functionalized MOF.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: March 21, 2017
    Assignee: U.S. Department of Energy
    Inventors: Erik Albenze, Michael Lartey, Tao Li, David R. Luebke, Hunaid B. Nulwala, Nathaniel L. Rosi, Surendar R. Venna