Patents by Inventor Hyo-Jick Choi

Hyo-Jick Choi 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: 20230390444
    Abstract: A material for deactivating a pathogenic aerosol includes a supporting fibrous layer and a salt crystal disposed on the supporting fibrous layer. The salt crystal is a coating layer, which partially or completely covers the supporting fibrous layer. The salt crystal includes one or more of sodium, potassium, chloride, magnesium, sulfate, ammonium, phosphate, glutamate, tartrate, and their ions, and the material has an air filtration efficiency of at least 5%.
    Type: Application
    Filed: August 24, 2023
    Publication date: December 7, 2023
    Inventor: Hyo-Jick CHOI
  • Publication number: 20230337670
    Abstract: Disclosed herein is a photo-polymerizable coating with broad-spectrum antimicrobial properties designed for personal protective equipment (PPE), such as face masks.
    Type: Application
    Filed: April 25, 2023
    Publication date: October 26, 2023
    Inventors: Hyo-Jick CHOI, Surjith Kumaran, Euna Oh
  • Patent number: 11771784
    Abstract: A pathogen-deactivating fibrous material is coated with salt crystals or salt crystal layer. The salt crystals or coating on the supporting fibrous material layer dissolves upon exposure to pathogenic aerosols and recrystallizes during evaporation of water from the pathogenic aerosols. Recrystallization of the salt deactivates pathogens. The pathogen-deactivating fibrous material can be used in a sanitizing fabric, an air filtering device, such as respiratory devices, masks, furnace filter devices, air conditioning device, vehicle cabin filter device, etc., and can provide a universal personal protection for preventing infections.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: October 3, 2023
    Inventor: Hyo-Jick Choi
  • Publication number: 20200179547
    Abstract: A pathogen-deactivating fibrous material is coated with salt crystals or salt crystal layer. The salt crystals or coating on the supporting fibrous material layer dissolves upon exposure to pathogenic aerosols and recrystallizes during evaporation of water from the pathogenic aerosols. Recrystallization of the salt deactivates pathogens. The pathogen-deactivating fibrous material can be used in a sanitizing fabric, an air filtering device, such as respiratory devices, masks, furnace filter devices, air conditioning device, vehicle cabin filter device, etc., and can provide a universal personal protection for preventing infections.
    Type: Application
    Filed: August 18, 2017
    Publication date: June 11, 2020
    Inventor: Hyo-Jick CHOI
  • Patent number: 8647853
    Abstract: The present invention relates to a method for controlling multi-phase chemical reactions using the architecture of surfactant foams to control mass transport of chemical reactants, catalysts, and products and the kinetics with which they react. More specifically, the invention relates to transformations that require both gaseous and liquid components with dissolved or suspended catalysts that are unstable when sheared.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 11, 2014
    Assignee: Ensovi, LLC
    Inventors: Carlo Montemagno, David Wendell, Hyo-Jick Choi
  • Publication number: 20130316427
    Abstract: The present invention relates to a method for controlling multi-phase chemical reactions using the architecture of surfactant foams to control mass transport of chemical reactants, catalysts, and products and the kinetics with which they react. More specifically, the invention relates to transformations that require both gaseous and liquid components with dissolved or suspended catalysts that are unstable when sheared.
    Type: Application
    Filed: April 13, 2012
    Publication date: November 28, 2013
    Inventors: Carlo Montemagno, David Wendell, Hyo-Jick Choi
  • Publication number: 20120264185
    Abstract: The present invention relates to a method for controlling multi-phase chemical reactions using the architecture of surfactant foams to control mass transport of chemical reactants, catalysts, and products and the kinetics with which they react. More specifically, the invention relates to transformations that require both gaseous and liquid components with dissolved or suspended catalysts that are unstable when sheared.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 18, 2012
    Inventors: Carlo Montemagno, David Wendell, Hyo-Jick Choi