Patents by Inventor Kumar Varoon

Kumar Varoon 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).

  • Publication number: 20230149861
    Abstract: The invention relates to a millisecond gasification method to fabricate graphene membranes, yielding a molecular sieving resolution of 0.2 ? for selective gas separation, and further relates to a method of preparation and uses thereof. In particular, the invention relates to the graphene membranes that have large CO2 permeances combined with attractive CO2/N2 and CO2/CH4 selectivity.
    Type: Application
    Filed: March 29, 2021
    Publication date: May 18, 2023
    Inventors: KUMAR VAROON AGRAWAL, SHIQI HUANG, KUANG-JUNG HSU
  • Patent number: 11559772
    Abstract: The invention relates to carbon supported crack- and tear-free graphene membranes of large area useful for selective gas separation, method of preparation and uses thereof. In particular, the invention relates to carbon supported crack- and tear-free graphene membranes having good gas separation performance, in particular high H2 permeance and H2/CH4 selectivities.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: January 24, 2023
    Assignee: GAZNAT SA
    Inventors: Kumar Varoon Agrawal, Shiqi Huang
  • Publication number: 20210023508
    Abstract: The invention relates to carbon supported crack- and tear-free graphene membranes of large area useful for selective gas separation, method of preparation and uses thereof. In particular, the invention relates to carbon supported crack- and tear-free graphene membranes having good gas separation performance, in particular high H2 permeance and H2/CH4 selectivities.
    Type: Application
    Filed: March 12, 2019
    Publication date: January 28, 2021
    Inventors: KUMAR VAROON AGRAWAL, SHIQI HUANG
  • Patent number: 10005674
    Abstract: A process for making a mechanically strong, high permeance, and relatively inexpensive support structure for zeolite membranes is described. In an example implementation, a process includes forming a silica powder from silica fibers, mixing the silica powder and a polymer solution to form a mixture, forming the mixture into a shaped mixture, and sintering the shaped mixture to form a silica support.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: June 26, 2018
    Assignee: Regents of the University of Minnesota
    Inventors: Michael Tsapatsis, Kumar Varoon Agrawal, Lorraine Francis
  • Patent number: 10005077
    Abstract: Oxide materials, thin films, coatings, and methods of preparing the same are disclosed herein. In certain embodiments the oxide material can have an MWW type framework or an MFI type framework. In one embodiment, the method includes: providing a suspension of an exfoliated layered oxide material in a solvent; and filtering the suspension through a porous support to provide a film of the oxide material, optionally directly on the porous support. Secondary grown films of the oxide material and methods of preparing the same are also provided. Thin zeolite films are attractive for a wide range of applications including molecular sieve membranes and catalytic membrane reactors, permeation barriers, low dielectric constant materials for microelectronics and sensor components for selective sensing.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: June 26, 2018
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Michael Tsapatsis, Kumar Varoon Agrawal
  • Publication number: 20150376019
    Abstract: A process for making a mechanically strong, high permeance, and relatively inexpensive support structure for zeolite membranes is described. In an example implementation, a process includes forming a silica powder from silica fibers, mixing the silica powder and a polymer solution to form a mixture, forming the mixture into a shaped mixture, and sintering the shaped mixture to form a silica support.
    Type: Application
    Filed: July 10, 2014
    Publication date: December 31, 2015
    Inventors: Michael Tsapatsis, Kumar Varoon Agrawal, Lorraine Francis
  • Publication number: 20150045206
    Abstract: Oxide materials, thin films, coatings, and methods of preparing the same are disclosed herein. In certain embodiments the oxide material can have an MWW type framework or an MFI type framework. In one embodiment, the method includes: providing a suspension of an exfoliated layered oxide material in a solvent; and filtering the suspension through a porous support to provide a film of the oxide material, optionally directly on the porous support. Secondary grown films of the oxide material and methods of preparing the same are also provided. Thin zeolite films are attractive for a wide range of applications including molecular sieve membranes and catalytic membrane reactors, permeation barriers, low dielectric constant materials for microelectronics and sensor components for selective sensing.
    Type: Application
    Filed: July 3, 2012
    Publication date: February 12, 2015
    Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Michael Tsapatsis, Kumar Varoon Agrawal
  • Patent number: 8833137
    Abstract: Method for assessment of friction properties of fibers or substrate. The method is useful for assessing the degree of damage of hair fibers, for demonstrating the efficacy of a composition for minimizing the friction properties of fibers or substrate and/or for supporting advertising claims.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: September 16, 2014
    Assignee: The Proctor & Gamble Company
    Inventors: Chetan Kantilal Yagnik, Kumar Varoon
  • Patent number: 8429963
    Abstract: Method for assessment of friction properties of fibers or substrate. The method is useful for assessing the degree of damage of hair fibers, for demonstrating the efficacy of a composition for minimizing the friction properties of fibers or substrate and/or for supporting advertising claims.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: April 30, 2013
    Inventors: Chetan Kantilal Yagnik, Kumar Varoon
  • Patent number: 8198901
    Abstract: Method for assessment of electrostatic properties of fibers or substrates, this method being particularly useful for demonstrating the efficacy of a composition for minimizing the accumulation of particles onto fiber or substrate, and for supporting advertising claims about this efficacy.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: June 12, 2012
    Assignee: The Procter & Gamble Company
    Inventor: Kumar Varoon
  • Publication number: 20100049671
    Abstract: Method for assessment of friction properties of fibers or substrate. The method is useful for assessing the degree of damage of hair fibers, for demonstrating the efficacy of a composition for minimizing the friction properties of fibers or substrate and/or for supporting advertising claims.
    Type: Application
    Filed: August 25, 2009
    Publication date: February 25, 2010
    Inventors: Chetan Kantilal Yagnik, Kumar Varoon
  • Publication number: 20090195253
    Abstract: Method for assessment of electrostatic properties of fibers or substrates, this method being particularly useful for demonstrating the efficacy of a composition for minimizing the accumulation of particles onto fiber or substrate, and for supporting advertising claims about this efficacy.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 6, 2009
    Inventor: Kumar Varoon
  • Publication number: 20090195254
    Abstract: Method for assessment of electrostatic properties of fibers or substrates, this method being particularly useful for demonstrating the efficacy of a composition for minimizing the accumulation of particles onto fiber or substrate.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 6, 2009
    Inventor: Kumar Varoon