Patents by Inventor Daniel J. Cho

Daniel J. Cho 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: 20230242420
    Abstract: A water treatment system includes a venturi injector including a venturi inlet that intakes water to be treated, a venturi throat including an orifice in fluid communication with a gas source, a discharge electrode integrated into a gas inlet in fluid communication with the orifice for generating a plasma discharge, thereby producing treated water, and a venturi outlet that discharges the treated water.
    Type: Application
    Filed: June 29, 2021
    Publication date: August 3, 2023
    Inventors: Daniel J. Cho, Russel R. McAvoy
  • Patent number: 11548799
    Abstract: A water treatment system includes a water inlet that intakes water to be treated, a high voltage (HV) electrode having a porous metal surface area in a range of between 0.1 cm2 and 5 cm2 in fluid communication with the water, such that the water flows through the porous metal surface area of the HV electrode, a ground electrode disposed across a gap from the HV electrode, in fluid communication with the water, a high voltage power supply electrically connected to the HV electrode for generating spark plasma or pulsed electric fields having a rise time equal to or less than 60 nanoseconds (ns) and an amplitude greater than or equal to 30 kV/cm across the gap, thereby producing treated water, and a water outlet that discharges the treated water.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: January 10, 2023
    Assignee: Onvector LLC
    Inventor: Daniel J. Cho
  • Publication number: 20220174808
    Abstract: A system for generating a plasma discharge in liquid utilizes first and second electrodes spaced apart in an interior space of a vessel holding the liquid. A channel can be defined in certain embodiments at least partially by at least one of the first and second electrodes, and an inlet in fluid communication with the interior space is configured to generate a vortical fluid flow in the vessel. A method for generating a plasma discharge in liquid is also provided. A high voltage electrode for generating a plasma discharge in liquid that includes a central solid cylindrical rod is also provided.
    Type: Application
    Filed: February 16, 2022
    Publication date: June 2, 2022
    Inventors: Jun Kang, Daniel J. Cho, HyoungSup Kim, Russel Ryall McAvoy
  • Patent number: 11279633
    Abstract: A system for generating a plasma discharge in liquid utilizes first and second electrodes spaced apart in an interior space of a vessel holding the liquid. A channel can be defined in certain embodiments at least partially by at least one of the first and second electrodes, and an inlet in fluid communication with the interior space is configured to generate a vortical fluid flow in the vessel. A method for generating a plasma discharge in liquid is also provided.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: March 22, 2022
    Assignee: Onvector LLC
    Inventors: Jun Kang, Daniel J. Cho, HyoungSup Kim
  • Patent number: 11124431
    Abstract: A water treatment system includes an adsorption column including granular activated carbon (GAC) that adsorbs contaminants from untreated water onto the GAC, thereby producing treated water, a first electrode disposed at a proximal side of the adsorption column, with a gap between the first electrode and the GAC, a second electrode disposed at a distal side of the adsorption column, a drain outlet in fluid communication with the adsorption column for draining water out of the adsorption column, a gas inlet in fluid communication with the adsorption column for injecting a displacement gas into the adsorption column, a high voltage power supply electrically connected to one of the first electrode and the second electrode for generating a plasma discharge within the GAC, thereby regenerating the GAC within the adsorption column, and a gas outlet in fluid communication with the adsorption column for venting waste gas produced by the plasma discharge.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: September 21, 2021
    Assignee: Onvector LLC
    Inventor: Daniel J. Cho
  • Publication number: 20200361797
    Abstract: A water treatment system includes a water inlet that intakes water to be treated, a high voltage (HV) electrode having a porous metal surface area in a range of between 0.1 cm2 and 5 cm2 in fluid communication with the water, such that the water flows through the porous metal surface area of the HV electrode, a ground electrode disposed across a gap from the HV electrode, in fluid communication with the water, a high voltage power supply electrically connected to the HV electrode for generating spark plasma or pulsed electric fields having a rise time equal to or less than 60 nanoseconds (ns) and an amplitude greater than or equal to 30 kV/cm across the gap, thereby producing treated water, and a water outlet that discharges the treated water.
    Type: Application
    Filed: May 11, 2020
    Publication date: November 19, 2020
    Applicant: ONVECTOR LLC
    Inventor: Daniel J. Cho
  • Publication number: 20200171409
    Abstract: A water treatment system includes an adsorption column including granular activated carbon (GAC) that adsorbs contaminants from untreated water onto the GAC, thereby producing treated water, a first electrode disposed at a proximal side of the adsorption column, with a gap between the first electrode and the GAC, a second electrode disposed at a distal side of the adsorption column, a drain outlet in fluid communication with the adsorption column for draining water out of the adsorption column, a gas inlet in fluid communication with the adsorption column for injecting a displacement gas into the adsorption column, a high voltage power supply electrically connected to one of the first electrode and the second electrode for generating a plasma discharge within the GAC, thereby regenerating the GAC within the adsorption column, and a gas outlet in fluid communication with the adsorption column for venting waste gas produced by the plasma discharge.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Applicant: ONVECTOR LLC
    Inventor: Daniel J. Cho
  • Patent number: 10598580
    Abstract: The present invention relates to the field of liquid viscosity measurement using a capillary tube. The invention pertains to novel methods that use surface tension driven flow for the measurement of viscosity of a liquid over a range of shear rates.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 24, 2020
    Assignee: HEALTH ONVECTOR INC
    Inventors: Daniel J. Cho, Joseph Weidman
  • Publication number: 20190241447
    Abstract: A system for generating a plasma discharge in liquid utilizes first and second electrodes spaced apart in an interior space of a vessel holding the liquid. A channel can be defined in certain embodiments at least partially by at least one of the first and second electrodes, and an inlet in fluid communication with the interior space is configured to generate a vortical fluid flow in the vessel. A method for generating a plasma discharge in liquid is also provided.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 8, 2019
    Inventors: Jun Kang, Daniel J. Cho, HyoungSup Kim
  • Patent number: 10167209
    Abstract: A treatment system for treating water, such as produced water that is produced during hydraulic fracturing. The system employs a combination of a plasma spark discharge and an RF oscillating electric field. The plasma spark discharge and the RF oscillating electric field may be employed simultaneously or in an overlapping manner within a chamber to treat the water. The treatment system is able to kill microorganisms as well as reduce or eliminate fouling due to, for example, bicarbonates. In some embodiments, grids are employed to further enhance the heat produced by the RF oscillating electric field.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: January 1, 2019
    Assignee: DREXEL UNIVERISITY
    Inventors: Young I. Cho, Alexander Fridman, Daniel J. Cho, Alexander Rabinovich
  • Publication number: 20180356325
    Abstract: The present invention relates to the field of liquid viscosity measurement using a capillary tube. The invention pertains to novel methods that use surface tension driven flow for the measurement of viscosity of a liquid over a range of shear rates.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 13, 2018
    Inventors: Daniel J. Cho, Joseph Weidman
  • Patent number: 9695068
    Abstract: The present invention consists of a method of pre-treatment of adulterated water for distillation, including adulterated water produced during hydraulic fracturing (“fracking”) of shale rock during natural gas drilling. In particular, the invention is directed to a method of treating adulterated water, said adulterated water having an initial level of bicarbonate ion in a range of about 250 ppm to about 5000 ppm and an initial level of calcium ion in a range of about 500 ppm to about 50,000 ppm, said method comprising contacting the adulterated water with a non-thermal arc discharge plasma to produce plasma treated water having a level of bicarbonate ion of less than about 100 ppm. Optionally, the plasma treated water may be further distilled.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: July 4, 2017
    Assignee: Drexel University
    Inventors: Young I. Cho, Alexander Fridman, Alexander Rabinovich, Daniel J. Cho
  • Patent number: 9540257
    Abstract: A plasma spark discharge reactor for treating water. The plasma spark discharge reactor comprises a HV electrode with a head and ground electrode that surrounds at least a portion of the HV electrode. A passage for gas may pass through the reactor to a location proximate to the head to provide controlled formation of gas bubbles in order to facilitate the plasma spark discharge in a liquid environment.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 10, 2017
    Assignee: Drexel University
    Inventors: Young I. Cho, Daniel J. Cho, Alexander Fridman, Hyoungsup Kim
  • Publication number: 20170000414
    Abstract: The invention comprises a method of using blood flow parameters to optimize the therapeutic efficacy of an antiplatelet agent in the treatment of a disease or disorder associated with abnormal hemodynamic thrombogenicity in a subject.
    Type: Application
    Filed: February 4, 2015
    Publication date: January 5, 2017
    Inventor: Daniel J. Cho
  • Publication number: 20160152494
    Abstract: A treatment system for treating water, such as produced water that is produced during hydraulic fracturing. The system employs a combination of a plasma spark discharge and an RF oscillating electric field. The plasma spark discharge and the RF oscillating electric field may be employed simultaneously or in an overlapping manner within a chamber to treat the water. The treatment system is able to kill microorganisms as well as reduce or eliminate fouling due to, for example, bicarbonates. In some embodiments, grids are employed to further enhance the heat produced by the RF oscillating electric field.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 2, 2016
    Applicant: Drexel University
    Inventors: Young I. Cho, Alexander Fridman, Daniel J. Cho, Alexander Rabinovich
  • Publication number: 20160137529
    Abstract: A plasma spark discharge reactor for treating water. The plasma spark discharge reactor comprises a HV electrode with a head and ground electrode that surrounds at least a portion of the HV electrode. A passage for gas may pass through the reactor to a location proximate to the head to provide controlled formation of gas bubbles in order to facilitate the plasma spark discharge in a liquid environment.
    Type: Application
    Filed: November 4, 2015
    Publication date: May 19, 2016
    Applicant: DREXEL UNIVERSITY
    Inventors: Young I. Cho, Daniel J. Cho, Alexander Fridman, Hyoungsup Kim
  • Publication number: 20140124357
    Abstract: The present invention consists of a method of pre-treatment of adulterated water for distillation, including adulterated water produced during hydraulic fracturing (“fracking”) of shale rock during natural gas drilling. In particular, the invention is directed to a method of treating adulterated water, said adulterated water having an initial level of bicarbonate ion in a range of about 250 ppm to about 5000 ppm and an initial level of calcium ion in a range of about 500 ppm to about 50,000 ppm, said method comprising contacting the adulterated water with a non-thermal arc discharge plasma to produce plasma treated water having a level of bicarbonate ion of less than about 100 ppm. Optionally, the plasma treated water may be further distilled.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 8, 2014
    Applicant: DREXEL UNIVERSITY
    Inventors: YOUNG I. CHO, ALEXANDER FRIDMAN, ALEXANDER RABINOVICH, DANIEL J. CHO
  • Patent number: 8536123
    Abstract: A method that includes a measurement of hemoglobin or hematocrit with a measurement of hemodynamic parameters to monitor and/or control a modality of treatment of a patient suffering from anemia.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: September 17, 2013
    Assignee: Health Onvector Inc.
    Inventor: Daniel J. Cho
  • Publication number: 20110275936
    Abstract: A method for computing patient specific blood viscosity and patient specific shear stress on a location of interest in the interior of a blood vessel that includes calculating shear rate of blood in the vessel, using imaging techniques and calculating the shear rate related blood viscosity.
    Type: Application
    Filed: May 7, 2010
    Publication date: November 10, 2011
    Inventors: Daniel J. Cho, Seul Ki Jeong
  • Publication number: 20100261648
    Abstract: A method that includes a measurement of hemoglobin or hematocrit with a measurement of hemodynamic parameters to monitor and/or control a modality of treatment of a patient suffering from anemia.
    Type: Application
    Filed: January 9, 2009
    Publication date: October 14, 2010
    Inventor: Daniel J. Cho