Patents by Inventor Jae H. Choi

Jae H. 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: 20240130613
    Abstract: This application discloses systems and methods for automated vision testing. Performing automated vision testing can be beneficial in a number of eye care applications due to the reduction of chair time, increase of the measurement accuracy, elimination of human errors, capability for internal instrument calibration, and the possibility for test standardization.
    Type: Application
    Filed: October 22, 2023
    Publication date: April 25, 2024
    Inventors: Gareguin Mikaelian, Jae H. Choi, Alexander Van Atta
  • Patent number: 11471596
    Abstract: This application describes a method and device for safely, effectively, perfusing distal to occluded arteries, based on diagnostic information from the catheter-perfusion-system based on sensors, effectors, controllers and algorithms included, with particular attention to the specific characteristics of the tissue and the fluid. Key actionable physiological values for the tissue can be calculated and derived. They include the auto-regulatory curve, with Upper and Lower limits of Auto regulation, vascular reserve, and collateral flow reserve and as auto-regulation exhaustion.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 18, 2022
    Inventors: John Pile-Spellman, Jae H. Choi
  • Publication number: 20220031336
    Abstract: An endovascular interventional method is provided that includes the steps of: inserting a catheter into a target blood vessel, wherein the catheter is coupled to a system that provides a continuous delivery of contrast and of a hyperosmotic fluid supply; injecting the contrast and determining a rate of flow that achieves angiographic filling of the target blood vessel at a first time; injecting the hyperosmotic fluid continuously at the rate of flow that achieves angiographic filling at the first time for a first period of time; injecting the contrast and determining a rate of flow that achieves angiographic filling of the target blood vessel at a second time following the first period of time; and injecting the hyperosmotic fluid continuously at the rate of flow that achieves angiographic filling at the second time for a second period of time.
    Type: Application
    Filed: August 2, 2021
    Publication date: February 3, 2022
    Inventors: John Pile-Spellman, Jae H. Choi
  • Patent number: 11191937
    Abstract: A method for delivering drugs into cystic fluid, the method comprising injecting a drug delivery system (DDS) into a cystic fluid space at an injection site, the DDS comprising at least one therapeutic agent encapsulated in biodegradable polymers, applying ultrasonic energy proximal to the injection site, and controlling the at least one of buoyancy, delivery location, mixing, and dispersion of the DDS to a targeted area using the ultrasonic energy.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: December 7, 2021
    Assignee: Advanced CSF Therapies, LLC
    Inventors: Jae H. Choi, Keith Baker, Alexander Klose, John Pile-Spellman
  • Patent number: 10773009
    Abstract: A method and system for infusing medical liquid with gasses, the system comprising a gas source, a vacuum pump, a temperature-controlled container including a fluid reservoir coupled to the gas source and the vacuum pump, a heating and cooling system, and a sonicator, and a controller configured to de-gas a liquid in the fluid reservoir by activating the vacuum pump, re-gas the liquid in the fluid reservoir by releasing gas from the gas source to the fluid reservoir via a first fluid line, and deliver the re-gassed liquid from the fluid reservoir to a catheter via a second fluid line.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 15, 2020
    Assignee: TRANSLUMINAL SYSTEMS, LLC
    Inventors: John Pile-Spellman, Jae H. Choi
  • Publication number: 20200086104
    Abstract: A method for delivering drugs into cystic fluid, the method comprising injecting a drug delivery system (DDS) into a cystic fluid space at an injection site, the DDS comprising at least one therapeutic agent encapsulated in biodegradable polymers, applying ultrasonic energy proximal to the injection site, and controlling the at least one of buoyancy, delivery location, mixing, and dispersion of the DDS to a targeted area using the ultrasonic energy.
    Type: Application
    Filed: March 21, 2019
    Publication date: March 19, 2020
    Inventors: Jae H. Choi, Keith Baker, Alexander Klose, John Pile-Spellman
  • Publication number: 20190298919
    Abstract: This application describes a method and device for safely, effectively, perfusing distal to occluded arteries, based on diagnostic information from the catheter-perfusion-system based on sensors, effectors, controllers and algorithms included, with particular attention to the specific characteristics of the tissue and the fluid. Key actionable physiological values for the tissue can be calculated and derived. They include the auto-regulatory curve, with Upper and Lower limits of Auto regulation, vascular reserve, and collateral flow reserve and as auto-regulation exhaustion.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Inventors: John Pile-Spellman, Jae H. Choi
  • Patent number: 10363364
    Abstract: The present application provides systems that include a controller, and an insertion device with at least one temperatures sensor thereon and a pump coupled to the controller. The insertion device provides temperature measurement(s) at/of a subject's organ to the controller and the controller varies an infusate flow rate to induce temperature changes in at least a portion of the subject's organ and stores the temperature measurements during perfusion induced temperature changes on a memory device. The controller may estimate at least one hemodynamic characteristic of at least a portion of the subject's organ based on the temperature measurements obtained during perfusion induced temperature changes.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: July 30, 2019
    Assignee: Hybernia Medical LLC
    Inventors: John Pile-Spellman, Jae H. Choi
  • Patent number: 10258781
    Abstract: A method for delivering drugs into cystic fluid, the method comprising injecting a drug delivery system (DDS) into a cystic fluid space at an injection site, the DDS comprising at least one therapeutic agent encapsulated in biodegradable polymers, applying ultrasonic energy proximal to the injection site, and controlling the at least one of buoyancy, delivery location, mixing, and dispersion of the DDS to a targeted area using the ultrasonic energy.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: April 16, 2019
    Assignee: Advanced CSF Therapies, LLC
    Inventors: Jae H. Choi, Keith Baker, Alexander Klose, John Pile-Spellman
  • Publication number: 20170173247
    Abstract: A method and system for infusing medical liquid with gasses, the system comprising a gas source, a vacuum pump, a temperature-controlled container including a fluid reservoir coupled to the gas source and the vacuum pump, a heating and cooling system, and a sonicator, and a controller configured to de-gas a liquid in the fluid reservoir by activating the vacuum pump, re-gas the liquid in the fluid reservoir by releasing gas from the gas source to the fluid reservoir via a first fluid line, and deliver the re-gassed liquid from the fluid reservoir to a catheter via a second fluid line.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 22, 2017
    Inventors: John Pile-Spellman, Jae H. Choi
  • Publication number: 20160375236
    Abstract: A method for delivering drugs into cystic fluid, the method comprising injecting a drug delivery system (DDS) into a cystic fluid space at an injection site, the DDS comprising at least one therapeutic agent encapsulated in biodegradable polymers, applying ultrasonic energy proximal to the injection site, and controlling the at least one of buoyancy, delivery location, mixing, and dispersion of the DDS to a targeted area using the ultrasonic energy.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Inventors: Jae H. Choi, Keith Baker, Alexander Klose, John Pile-Spellman
  • Publication number: 20160206816
    Abstract: The present application provides systems that include a controller, and an insertion device with at least one temperatures sensor thereon and a pump coupled to the controller. The insertion device provides temperature measurement(s) at/of a subject's organ to the controller and the controller varies an infusate flow rate to induce temperature changes in at least a portion of the subject's organ and stores the temperature measurements during perfusion induced temperature changes on a memory device. The controller may estimate at least one hemodynamic characteristic of at least a portion of the subject's organ based on the temperature measurements obtained during perfusion induced temperature changes.
    Type: Application
    Filed: January 15, 2016
    Publication date: July 21, 2016
    Inventors: John Pile-Spellman, Jae H. Choi, Erwin Lin
  • Publication number: 20110278455
    Abstract: Systems and methods can produce thermal images of the mounting of a thermally-enhanced integrated circuit (IC) upon a circuit board. The system includes a thermal imaging camera that is operable to image the thermal dissipation and/or conduction through the heat sink into a mounting pad on the substrate. In testing the thermally-enhanced IC, the substrate or IC is connected to a power source, and the IC is operated such that the IC begins to generate heat. As the heat is conducted or dissipated through the heat sink into the mounting pad, a thermal imaging camera can detect the heat conduction and/or dissipation through the heat sink into the substrate. If there are voids or other types of failures in the mounting of the IC, the thermal imaging camera can detect cooler or colder spots in the image.
    Type: Application
    Filed: May 13, 2010
    Publication date: November 17, 2011
    Applicant: AVAYA INC.
    Inventors: Jae H. Choi, Mark D. Woolley
  • Patent number: 7991214
    Abstract: The present invention provides an image enhancer that can be applied to various materials during quality testing. The image enhancer is adapted to infiltrate cracks, crevices, fractures, fissures, and other faults, defects, or flaws in the material and provide an increased contrast for images taken by, for example, an X-ray imaging device.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: August 2, 2011
    Assignee: Avaya Inc.
    Inventors: Jae H. Choi, James E. Evans, Matthew Gilhousen, Mark D. Woolley
  • Publication number: 20040086670
    Abstract: An electromagnetically-shielded enclosure is formed by applying an electromagnetic-shielding film to a plastics enclosure by the water-borne film application process. The film is formed from a mixture comprising a polymer and a conductive material, such as lossy ferrite, carbon glass, or metal, that constitutes 20 to 40 percent by weight of the mixture.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Inventors: Jae H. Choi, David A. Norte, Woong K. Yoon
  • Patent number: 5087521
    Abstract: It has been found that the properties of poly(vinyl chloride) based polymers are substantially enhanced through the use of a specific plasticizer system. In particular, the use of specific triarylphosphates in combination with specific diarylphosphates in specific proportions not only plasticizes the PVC polymer but produces a transparent, flame retardant heat resistant, easily worked polymer. These materials are used so that the diarylphosphate is 30-45% of the total concentration of the phosphates and such that 45 to 70 parts of the phosphates are present per 100 parts of the polymer.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: February 11, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: Jae H. Choi, John J. Mottine, Walter J. Sparzak, Sr., Walter D. Tates, William C. Vesperman
  • Patent number: 5063017
    Abstract: A wide variety of products are formed by compression molding of silicone materials. Although such articles are used in numerous applications, compression molding is expensive and exudation of unreacted monomers and oligomers tend to cause electrical contact failures. By employing specific polyurethanes formed from polyols and isocyanates, it is possible to form articles by reaction injection molding. This process is substantially cheaper than compression molding and yet the same properties obtainable with silicones are attained.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: November 5, 1991
    Assignee: AT&T Laboratories
    Inventor: Jae H. Choi
  • Patent number: 4705823
    Abstract: A telephone cord employs as an insulator for the conductors therein an extrudable blend of a styrene-ethylenebutylene-styrene copolymer with polypropylene.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: November 10, 1987
    Assignees: AT&T Technologies, AT&T Bell Laboratories
    Inventors: Jae H. Choi, William M. Kanotz, William C. Vesperman
  • Patent number: D448872
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: October 2, 2001
    Assignee: Deere & Company
    Inventors: Dave Clarke, Ernst Simon, Emmanuel Boissier, Aris Nicols, Bengt Nestell, Jae H. Choi
  • Patent number: D335709
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: May 18, 1993
    Inventor: Jae H. Choi