Patents by Inventor Hoon Sohn

Hoon Sohn 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: 20250122134
    Abstract: The present invention relates to a separation method for a mixture comprising a solvent and C4 or higher linear alpha olefins, and method and device for preparing ethylene oligomer utilizing the separation method, and more specifically, a method capable of separating a mixture, which was generated after oligomerization reaction of ethylene and comprises a solvent and C4 or higher linear alpha olefins, into the solvent, C6 or lower linear alpha olefin, and C8 or higher linear alpha olefin even by one-time treatment, and a method and a device for preparing ethylene oligomer utilizing the separation method.
    Type: Application
    Filed: October 14, 2024
    Publication date: April 17, 2025
    Inventors: Young Hoon SOHN, Won Jong HONG, Min Su KO, Sang Joon OH, Ki Joon KANG, Gregorius Rionugroho HARVIANTO
  • Publication number: 20250122314
    Abstract: The present disclosure relates to a separation method for a reaction product of olefin oligomerization, and a method and a device for preparing ethylene oligomer utilizing the separation method, and more specifically, a method capable of separating a mixture, which was generated after oligomerization reaction of ethylene and comprises a solvent and C8 or higher linear alpha olefins, into the solvent, C8 linear alpha olefin, and C10 or higher linear alpha olefin even by one-time treatment, and a method and a device for preparing ethylene oligomer utilizing the separation method.
    Type: Application
    Filed: October 14, 2024
    Publication date: April 17, 2025
    Inventors: Young Hoon SOHN, Won Jong Hong, Min Su Ko, Sang Joon Oh, Ki Joon Kang, Gregorius Rionugroho Harvianto
  • Publication number: 20250104968
    Abstract: This invention is an antenna structure inducing plasma in a chamber with applied alternative power, comprising: a first antenna segment and a second antenna segment arranged based on a virtual central axis to have a first curvature radius and a second curvature radius respectively, the central axis crossing a first plane, and a first capacitive load electrically connecting the first antenna segment and the second antenna segment, wherein the first antenna segment extends from one end of the first capacitive load with the first curvature radius having a first length and the second antenna segment extends from other end of the first capacitive load with the second curvature radius having a second length, and wherein a sum of the first length and the second length is shorter than a circumference of the first curvature radius or the second curvature radius.
    Type: Application
    Filed: December 10, 2024
    Publication date: March 27, 2025
    Inventors: Sae Hoon UHM, Yun Seong LEE, Yeong Hoon SOHN, Se Hong PARK
  • Patent number: 12249925
    Abstract: A power supply includes an inverter configured to convert direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load, and a controller configured to detect a delay time of an output voltage and an output current output to the impedance matching circuit and the load and to adjust a frequency of the output voltage according to the detected delay time.
    Type: Grant
    Filed: March 15, 2024
    Date of Patent: March 11, 2025
    Assignee: EN2CORE TECHNOLOGY, INC.
    Inventors: Yeong-Hoon Sohn, Se-Hong Park, Sae-Hoon Uhm
  • Patent number: 12249923
    Abstract: A power supply includes an inverter configured to convert direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load, and a controller configured to detect a delay time of an output voltage and an output current output to the impedance matching circuit and the load and to adjust a frequency of the output voltage according to the detected delay time.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: March 11, 2025
    Assignee: EN2CORE TECHNOLOGY, INC.
    Inventors: Yeong-Hoon Sohn, Se-Hong Park, Sae-Hoon Uhm
  • Publication number: 20250047216
    Abstract: A power supply includes an inverter configured to direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load; and a controller configured to adjust disposition of a powering period, in which the AC power is output, and a freewheeling period, in which the AC power is not output, to adjust a power amount of the power supplied to the load through the impedance matching circuit by the inverter.
    Type: Application
    Filed: October 25, 2024
    Publication date: February 6, 2025
    Inventors: Yeong-Hoon SOHN, Se-Hong PARK, Sae-Hoon UHM
  • Publication number: 20250046571
    Abstract: A plasma generating apparatus according to an embodiment of the present invention comprises: a pair of electrodes arranged in a dielectric discharge tube; an initial discharge induction coil module; and a main discharge induction coil module. The initial discharge induction coil module and the main discharge induction coil module are connected to an RF power source, and the RF power source provides RF power having different resonance frequencies to the initial discharge induction coil module and the main discharge induction coil module, respectively.
    Type: Application
    Filed: October 23, 2024
    Publication date: February 6, 2025
    Inventors: Sae Hoon UHM, Yun Seong LEE, Yeong Hoon SOHN, Se Hong PARK
  • Patent number: 12209935
    Abstract: In a method of estimating displacement of a bridge, a first displacement including a low frequency component and a first high frequency component is generated based on a strain that is measured by a plurality of pairs of strain gauges installed at positions in a first direction from a reference point, in a bridge, a second displacement including a second high frequency component is generated based on an acceleration that is measured by an accelerometer installed at a first position spaced apart from the reference point by a first distance in the first direction, in the bridge, and a final displacement of the bridge is generated based on an unknown parameter associated with the displacement, the low frequency component and the second high frequency component. The unknown parameter is generated by applying a recursive least square algorithm to the first high frequency component and the second high frequency component.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: January 28, 2025
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hoon Sohn, Zhanxiong Ma
  • Patent number: 12205794
    Abstract: This invention is an antenna structure inducing plasma in a chamber with applied alternative power, comprising: a first antenna segment and a second antenna segment arranged based on a virtual central axis to have a first curvature radius and a second curvature radius respectively, the central axis crossing a first plane, and a first capacitive load electrically connecting the first antenna segment and the second antenna segment, wherein the first antenna segment extends from one end of the first capacitive load with the first curvature radius having a first length and the second antenna segment extends from other end of the first capacitive load with the second curvature radius having a second length, and wherein a sum of the first length and the second length is shorter than a circumference of the first curvature radius or the second curvature radius.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: January 21, 2025
    Assignee: EN2CORE TECHNOLOGY INC.
    Inventors: Sae Hoon Uhm, Yun Seong Lee, Yeong Hoon Sohn, Se Hong Park
  • Patent number: 12159766
    Abstract: A plasma generating apparatus according to an embodiment of the present invention comprises: a pair of electrodes arranged in a dielectric discharge tube; an initial discharge induction coil module; and a main discharge induction coil module. The initial discharge induction coil module and the main discharge induction coil module are connected to an RF power source, and the RF power source provides RF power having different resonance frequencies to the initial discharge induction coil module and the main discharge induction coil module, respectively.
    Type: Grant
    Filed: September 12, 2023
    Date of Patent: December 3, 2024
    Assignee: EN2CORE TECHNOLOGY, INC.
    Inventors: Sae Hoon Uhm, Yun Seong Lee, Yeong Hoon Sohn, Se Hong Park
  • Patent number: 12155320
    Abstract: A power supply includes an inverter configured to direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load; and a controller configured to adjust disposition of a powering period, in which the AC power is output, and a freewheeling period, in which the AC power is not output, to adjust a power amount of the power supplied to the load through the impedance matching circuit by the inverter.
    Type: Grant
    Filed: January 10, 2024
    Date of Patent: November 26, 2024
    Assignee: EN2CORE TECHNOLOGY, INC.
    Inventors: Yeong-Hoon Sohn, Se-Hong Park, Sae-Hoon Uhm
  • Patent number: 12112500
    Abstract: The present disclosure provides an apparatus for cylindrical convolutional neural network operation, and an apparatus and method for object recognition and viewpoint estimation using the same. The present disclosure uses a cylindrical convolutional network to recognize objects in the image and to determine the viewpoint, which cylindrical convolutional network performs a convolution operation while sliding the input image in the direction of rotation of the cylindrical kernel and extracts a plurality of view-specific feature vectors according to angular unit intervals, to identify and recognize objects, as well as to determine the viewpoint from which the objects were photographed.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: October 8, 2024
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kwang Hoon Sohn, Sung Hun Joung
  • Publication number: 20240328998
    Abstract: For non-destructively measuring the yield strength of a metallic member using magnetic incremental permeability, a quasi-static excitation magnetic field is applied to two points of the metallic member, while a small alternating magnetic field generated by a transmitting coil is applied to the metal member. Intensity of the quasi-static excitation magnetic field applied to the metallic member is measured using a Hall sensor. The magnetic field induced by the magnetized metallic member is detected using a sensing coil. Using signals from the Hall sensor and the sensing coil, a reversible permeability (MIP) of the metallic member is obtained. A grain size of the metallic member is obtained from the relationship between the reversible permeability and the grain size of the metallic member, and the yield strength of the metallic member is calculated using the grain size. The grain size and yield strength of the metallic member can be measured non-destructively.
    Type: Application
    Filed: July 19, 2022
    Publication date: October 3, 2024
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hoon SOHN, Hyung Jin LIM, Jongsu LEE
  • Publication number: 20240291494
    Abstract: The voltage-controlled oscillator can include a voltage-current conversion circuit that outputs a control current corresponding to the control voltage, and a ring oscillator that generates an output signal with a frequency corresponding to the control current. According to an embodiment, by using a voltage-current conversion circuit, it is possible to design a voltage-controlled oscillator that can operate even with a relatively low supply power and have stable characteristics even when the temperature changes.
    Type: Application
    Filed: February 23, 2024
    Publication date: August 29, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Ji Hoon SOHN, Yong Hwan MOON, Jae Wook YOO
  • Patent number: 12046167
    Abstract: An apparatus for inspecting a display panel for defects includes a table which supports the display panel, a laser excitation unit that irradiates a non-display area of the display panel with a point laser beam, a thermal wave detecting unit that generates thermal wave images of irradiated portions of the non-display area, a driving unit, and a control unit. A groove corresponding to an edge of the display panel may be defined in a top surface of the table. A defect, such as a crack, may be detected by comparing a defect pattern obtained from the thermal wave images with a pre-registered defect pattern.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: July 23, 2024
    Assignees: SAMSUNG DISPLAY CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hoon Sohn, Sangwoo Choi, Minsang Koo, Sanghyuk Kwon, Eunchul Shin, Woojin Jung, Jiho Park, Soonkyu Hwang
  • Publication number: 20240223104
    Abstract: A power supply includes an inverter configured to convert direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load, and a controller configured to detect a delay time of an output voltage and an output current output to the impedance matching circuit and the load and to adjust a frequency of the output voltage according to the detected delay time.
    Type: Application
    Filed: March 15, 2024
    Publication date: July 4, 2024
    Inventors: Yeong-Hoon SOHN, Se-Hong PARK, Sae-Hoon UHM
  • Publication number: 20240219314
    Abstract: A method for manufacturing a semiconductor device includes generating light, modulating power of the light to generate power-modulated light, acquiring an image signal of a measurement target using the power-modulated light, filtering the image signal to separate a real signal and a false signal, analyzing the measurement target using the real signal, and performing a semiconductor process on the measurement target based analyzing the measurement target using the real signal, wherein filtering the image signal includes classifying a first component of the image signal that is dependent on power of the power-modulated light as the real signal, and classifying a second component of the image signal that is independent of the power of the power-modulated light as the false signal.
    Type: Application
    Filed: September 18, 2023
    Publication date: July 4, 2024
    Inventors: Min Ho Rim, Young Hoon Sohn
  • Publication number: 20240202898
    Abstract: Disclosed are a method and a system for measuring a displacement of a structure based on fusion of asynchronous vision measurement data of natural target and acceleration data of the structure. A scale factor, which is a conversion factor between a pixel resolution of the image frame data and a distance resolution of real space, is calculated using image frame data taken at a predetermined first sample frequency of a stationary target outside the structure by a camera installed on the structure, and acceleration data measured at a predetermined second sample frequency by an accelerometer installed on the structure, over time. A vision-based displacement value of the structure is estimated using a feature point matching algorithm and the scale factor.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 20, 2024
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hoon SOHN, Jae Mook CHOI, Zhanxiong MA, Ki Young KIM
  • Publication number: 20240175779
    Abstract: Disclosed are method and system of estimating an absolute strain of a structure under tensile force in a reference-free manner using ultrasonic wave velocity. Ultrasonic vibrations are generated by a vibration exciting element attached to the structure, and first and second ultrasonic vibrations propagating in a tensile force direction and a direction orthogonal to the tensile force direction in the structure are detected using first and second vibration detection elements, respectively. The detected first and second ultrasonic vibration signals are converted into first and second digital signals. Then, a computing unit calculates propagation velocities of the first and second ultrasonic vibrations, and applies them to an equation of relationship between propagation velocities of ultrasonic vibrations and a strain of the structure to obtain an absolute strain of the structure in the x-direction due to the tensile force. The calculated absolute strain can be used to evaluate stability of the structure.
    Type: Application
    Filed: November 14, 2023
    Publication date: May 30, 2024
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hoon Sohn, Ohjun Kwon
  • Publication number: 20240170699
    Abstract: An embodiment antioxidant liquid for a fuel cell is provided. The antioxidant liquid is to be charged in a gas diffusion layer of a fuel cell stack, and the antioxidant liquid includes a solvent, an oxide as a first antioxidant dispersed in the solvent, and a salt as a second antioxidant dissolved in the solvent.
    Type: Application
    Filed: July 3, 2023
    Publication date: May 23, 2024
    Inventors: Seung Tak Noh, Jae Man Park, Hyun Jae Kim, Ji Hoon Sohn, Seon Yong Lee, Seung Hun Kang