Patents by Inventor Bikash CHOUHAN

Bikash CHOUHAN 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: 11988649
    Abstract: A device for ion chromatography comprises a tube with an inlet opening and an outlet opening and an inner diameter from about 40 microns to about 10 microns. There is an aperture through one side of the tube into a lumen of the tube. At least a portion of the inner surface of the tube has a first charge. An ion exchange barrier covers the aperture on an outside surface of the tube. The inner surface of the tube, from the inlet opening to the aperture, is coated with ion exchange particles having a diameter ranging from about 30 nm to about 200 nm. The ion exchange particles have a second charge opposite the first charge. The inner surface of the tube, from the outlet opening to the aperture, is not coated with ion exchange particles.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: May 21, 2024
    Assignee: Board of Regents, The University of Texas System
    Inventors: Purnendu K. Dasgupta, Bikash Chouhan, Joseph Ray
  • Publication number: 20220107292
    Abstract: A device for ion chromatography comprises a tube with an inlet opening and an outlet opening and an inner diameter from about 40 microns to about 10 microns. There is an aperture through one side of the tube into a lumen of the tube. At least a portion of the inner surface of the tube has a first charge. An ion exchange barrier covers the aperture on an outside surface of the tube. The inner surface of the tube, from the inlet opening to the aperture, is coated with ion exchange particles having a diameter ranging from about 30 nm to about 200 nm. The ion exchange particles have a second charge opposite the first charge. The inner surface of the tube, from the outlet opening to the aperture, is not coated with ion exchange particles.
    Type: Application
    Filed: October 6, 2020
    Publication date: April 7, 2022
    Inventors: Purnendu K. Dasgupta, Bikash Chouhan, Joseph Ray
  • Patent number: 11199491
    Abstract: A photothermal absorbance detection apparatus comprises a flow cell comprising a first temperature responsive device on an input side, a second temperature responsive device on an output side, and a detection region between the first temperature responsive device and the second temperature responsive device; and a light-emitting device positioned proximate to the detection region and configured to transmit electromagnetic radiation towards the detection region; wherein the first temperature responsive device and the second temperature responsive device together measure a change in temperature of a fluid passing through the detection region.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: December 14, 2021
    Assignee: Board of Regents, the University of Texas System
    Inventors: Purnendu Dasgupta, Bikash Chouhan
  • Publication number: 20200080930
    Abstract: A photothermal absorbance detection apparatus comprises a flow cell comprising a first temperature responsive device on an input side, a second temperature responsive device on an output side, and a detection region between the first temperature responsive device and the second temperature responsive device; and a light-emitting device positioned proximate to the detection region and configured to transmit electromagnetic radiation towards the detection region; wherein the first temperature responsive device and the second temperature responsive device together measure a change in temperature of a fluid passing through the detection region.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 12, 2020
    Inventors: Purnendu DASGUPTA, Bikash CHOUHAN