Patents by Inventor Arjun Thapa

Arjun Thapa 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: 12643063
    Abstract: The present development is a nanofilter, i.e. a filter material that comprises inorganic nanowires impregnated into a non-woven polymer or cloth fabric material. The nanofilter comprises a fabric infiltrated with a nanowire powder slurry selected from anatase titania (TiO2), zinc oxide (ZnO), silica, tin oxide, alumina (Al2O3), or combinations thereof. Exemplary fabrics include a non-woven polymer and a cotton fabric cloth. The nanowire powder slurry effectively produces a coating on the fabric. Optionally, the nanowires may be functionalized using nanoparticles and/or disinfecting salt particles. The infiltrated nanowires form a porous network with sub-micron scale openings and provide filtration of any airborne particles, liquid droplets and viruses including COVID 19. The nanofilter may be used in a variety of applications, such as a nanofilter respirator as described herein.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: June 2, 2026
    Assignee: University of Louisville Research Foundation, Inc.
    Inventors: Mahendra Sunkara, Arjun Thapa, Theodore Druffel, Edward C Tackett, Vivekanand Kumar, Lukus Guhy, Tu Nguyen
  • Patent number: 12163953
    Abstract: Various embodiments relate to p-phenylene ethynylene compounds as bioactive and detection agents. In various embodiments, the present invention provides a method of inducing germination of microbial spores including contacting the microbial spores with a p-phenylene ethynylene compound. In various embodiments, the present invention provides a method for detecting an enzyme, a method of protein analysis, or a method of detecting a chemical agent, including introducing a p-phenylene ethylylene compound to a composition including an enzyme substrate, and analyzing the fluorescence of the p-phenylene ethynylene compound. Various embodiments provide sensors that include a p-phenylene ethynylene compound and an enzyme substrate.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: December 10, 2024
    Assignee: STC.UNM
    Inventors: David G. Whitten, Harry Craig Pappas, Eric H. Hill, Yue Zhang, Eva Yung Hua Chi, Arjun Thapa, Ying Wang, Patrick L Donabedian, Kiran Bhaskar
  • Publication number: 20200158720
    Abstract: Various embodiments relate to p-phenylene ethynylene compounds as bioactive and detection agents. In various embodiments, the present invention provides a method of inducing germination of microbial spores including contacting the microbial spores with a p-phenylene ethynylene compound. In various embodiments, the present invention provides a method for detecting an enzyme, a method of protein analysis, or a method of detecting a chemical agent, including introducing a p-phenylene ethylylene compound to a composition including an enzyme substrate, and analyzing the fluorescence of the p-phenylene ethynylene compound. Various embodiments provide sensors that include a p-phenylene ethynylene compound and an enzyme substrate.
    Type: Application
    Filed: December 9, 2019
    Publication date: May 21, 2020
    Inventors: David G. Whitten, Harry Craig Pappas, Eric H. Hill, Yue Zhang, Eva Yung Hua Chi, Arjun Thapa, Ying Wang, Patrick L. Donabedian, Kiran Bhaskar
  • Patent number: 10533991
    Abstract: Various embodiments relate to p-phenylene ethynylene compounds as bioactive and detection agents. In various embodiments, the present invention provides a method of inducing germination of microbial spores including contacting the microbial spores with a p-phenylene ethynylene compound. In various embodiments, the present invention provides a method for detecting an enzyme, a method of protein analysis, or a method of detecting a chemical agent, including introducing a p-phenylene ethynylene compound to a composition including an enzyme substrate, and analyzing the fluorescence of the p-phenylene ethynylene compound. Various embodiments provide sensors that include a p-phenylene ethynylene compound and an enzyme substrate.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: January 14, 2020
    Assignee: STC.UNM
    Inventors: David G. Whitten, Harry Pappas, Eric H. Hill, Yue Zhang, Eva Yung Hua Chi, Arjun Thapa, Ying Wang, Patrick L. Donabedian, Kiran Bhaskar
  • Publication number: 20170023554
    Abstract: Various embodiments relate to p-phenylene ethynylene compounds as bioactive and detection agents. In various embodiments, the present invention provides a method of inducing germination of microbial spores including contacting the microbial spores with a p-phenylene ethynylene compound. In various embodiments, the present invention provides a method for detecting an enzyme, a method of protein analysis, or a method of detecting a chemical agent, including introducing a p-phenylene ethylylene compound to a composition including an enzyme substrate, and analyzing the fluorescence of the p-phenylene ethynylene compound. Various embodiments provide sensors that include a p-phenylene ethynylene compound and an enzyme substrate.
    Type: Application
    Filed: March 13, 2015
    Publication date: January 26, 2017
    Inventors: David G. Whitten, Harry Pappas, Eric H. Hill, Yue Zhang, Eva Yung Hua Chi, Arjun Thapa, Ying wang, Patrick L. Donabedian, Kiran Bhaskar