Patents by Inventor Rajarshi Guha

Rajarshi Guha 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).

  • Patent number: 10874994
    Abstract: Disclosed herein is a membrane comprising a bonding layer; and an activation layer disposed on the bonding layer and in contact with it; where the activation layer comprises catalyst nanoparticles that are operative to decompose impurities contained in an aqueous solution to generate gas bubbles that remove a sludge disposed on the membrane. Disclosed herein too is a method of purifying an aqueous solution comprising disposing in the aqueous solution, a membrane that comprises a bonding layer and an activation layer; where the activation layer comprises catalyst nanoparticles; partitioning the aqueous solution into a concentrate portion and a filtrate portion; where the activation layer contacts the concentrate portion; and decomposing impurities contained in the aqueous solution to generate gas bubbles that remove a sludge disposed on the membrane.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: December 29, 2020
    Assignee: THE PENN STATE RESEARCH FOUNDATION
    Inventors: Rajarshi Guha, Manish Kumar, Darrell Velegol
  • Publication number: 20180056248
    Abstract: Disclosed herein is a membrane comprising a bonding layer; and an activation layer disposed on the bonding layer and in contact with it; where the activation layer comprises catalyst nanoparticles that are operative to decompose impurities contained in an aqueous solution to generate gas bubbles that remove a sludge disposed on the membrane. Disclosed herein too is a method of purifying an aqueous solution comprising disposing in the aqueous solution, a membrane that comprises a bonding layer and an activation layer; where the activation layer comprises catalyst nanoparticles; partitioning the aqueous solution into a concentrate portion and a filtrate portion; where the activation layer contacts the concentrate portion; and decomposing impurities contained in the aqueous solution to generate gas bubbles that remove a sludge disposed on the membrane.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 1, 2018
    Inventors: Rajarshi Guha, Manish Kumar, Darrell Velegol
  • Patent number: 9833744
    Abstract: Provided are processes of removing particulate fouling from a filtration membrane or for preventing membrane fouling by particulate matter. A process capitalizes on reversal of a naturally occurring diisophoretic particle deposition to actively move particulate material away from a membrane. A process includes placing a microparticle including a salt in proximity to a membrane such that the microparticle creates a gradient generated spontaneous electric field or a gradient generated spontaneous chemiphoretic field in the solvent proximal to the membrane that actively draws charged particles away from the membrane thereby removing charged particulate matter away from the membrane or preventing its deposition.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: December 5, 2017
    Assignee: The Penn State Research Foundation
    Inventors: Darrell Velegol, Abhishek Kar, Rajarshi Guha, Manish Kumar
  • Publication number: 20160375407
    Abstract: Provided are processes of removing particulate fouling from a filtration membrane or for preventing membrane fouling by particulate matter. A process capitalizes on reversal of a naturally occurring diisophoretic particle deposition to actively move particulate material away from a membrane. A process includes placing a microparticle including a salt in proximity to a membrane such that the microparticle creates a gradient generated spontaneous electric field or a gradient generated spontaneous chemiphoretic field in the solvent proximal to the membrane that actively draws charged particles away from the membrane thereby removing charged particulate matter away from the membrane or preventing its deposition.
    Type: Application
    Filed: November 24, 2014
    Publication date: December 29, 2016
    Inventors: Darrell Velegol, Abhishek Kar, Rajarshi Guha, Manish Kumar