Patents by Inventor Hong-Ju Lee

Hong-Ju Lee 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: 12365481
    Abstract: Disclosed are a flight control apparatus for an aerial vehicle and a method of operating the same. The flight control apparatus includes a communication circuit that establishes communication with a control system and receive first information related to operation information for controlling flight of an aerial vehicle from the control system, a sensor that obtains second information related to flight data of the aerial vehicle, a memory that stores a prediction model for predicting a flight state of the aerial vehicle based on the first information and the second information, and a flight parameter estimation value including at least one of a landing gear spring coefficient, an aerodynamic coefficient, a friction coefficient, an control surface effect, a thrust coefficient, or inertia moment or any combination thereof or any combination thereof, and a processor that is electrically connected to the communication circuit, the sensor, and the memory.
    Type: Grant
    Filed: November 14, 2022
    Date of Patent: July 22, 2025
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Hong Ju Lee, Gun Hee Moon, Hye In Jung, Kyu Nam Kim, Hyun Jee Ryu, Chang Hyun Sung, Jun Young Lim
  • Publication number: 20250222613
    Abstract: A cutting apparatus includes a main roller, a main motor configured to rotate the main roller, a plurality of adjusting rollers spaced apart from the main roller, a plurality of sub-motors respectively connected to the plurality of adjusting rollers and configured to respectively rotate the plurality of adjusting rollers, a plurality of cutting wires wound around the main roller and the plurality of adjusting rollers, and a controller configured to control the main motor and the plurality of sub-motors such that a surface speed of the main roller is substantially the same as surface speeds of the plurality of adjusting rollers.
    Type: Application
    Filed: March 24, 2025
    Publication date: July 10, 2025
    Applicant: HANWHA PRECISION MACHINERY CO., LTD.
    Inventors: Min Su KIM, Hong Ju LEE
  • Publication number: 20250200782
    Abstract: An apparatus for image recognition of a runway can include a sensor device that obtains flight status information of an air mobility and a processor that obtains information about a position of a runway in response to the flight status information obtained by the sensor device. The processor can obtain first position information about a runway position based on a first algorithm, in response to a flight status being an approach phase, obtain second position information about the runway position based on a second algorithm different from the first algorithm, corresponding to the flight status being a ground roll phase, and fuse the first position information with the second position information to obtain the information about the position of the runway, in response to the flight status corresponding to a phase change interval between the approach phase and the ground roll phase.
    Type: Application
    Filed: September 6, 2024
    Publication date: June 19, 2025
    Inventors: Hyun Jee Ryu, Hong Ju Lee, Gun Hee Moon, Jun Young Lim
  • Publication number: 20250200965
    Abstract: An apparatus for recognizing a runway using an image can include a camera mounted on air mobility to obtain images for an area in front of the air mobility and a processor connected with the camera. The processor can determine a flight status of the air mobility, based on flight phase information of the air mobility, obtain information a position of a runway for the air mobility from a first image obtained by the camera, in response to the flight status being an approach phase, and obtain information about a position of a centerline of the runway from a second image obtained by the camera, in response to the flight status being a ground roll phase.
    Type: Application
    Filed: September 6, 2024
    Publication date: June 19, 2025
    Inventors: Hyun Jee Ryu, Hong Ju Lee, Gun Hee Moon, Jun Young Lim
  • Publication number: 20250078300
    Abstract: An apparatus for an aerial vehicle is introduced. The apparatus may comprise a camera and a processor coupled to the camera. During flight, the processor may obtain an image from the camera, transform it into a bird-eye view image, and match it with digital surface model (DSM) data. Based on this matched image, the processor may generate a depth map image. Further, the processor may utilize the depth map image to produce a signal for controlling the operation of the aerial vehicle.
    Type: Application
    Filed: August 27, 2024
    Publication date: March 6, 2025
    Inventors: Jun Young Lim, Hyun Jee Ryu, Gun Hee Moon, Hong Ju Lee
  • Publication number: 20240410030
    Abstract: Provided is an ultrathick steel material for a flange having excellent strength and low temperature impact toughness, and a manufacturing method therefor. The steel material of the present disclosure comprises, in weight %, C: 0.05-0.2%, Si: 0.05-0.5%, Mn: 1.0-2.0%, Al: 0.005-0.1%, P: 0.01% or less, S: 0.015% or less, Nb: 0.005-0.07%, V: 0.001-0.3%, Ti: 0.001-0.05%, Cr: 0.01-0.3%, Mo: 0.01-0.12%, Cu: 0.01-0.6%, Ni: 0.05-4.0%, Ca: 0.0005-0.004%, and the balance being Fe and other unavoidable impurities, wherein the steel material has a microstructure having a prior austenite crystallite grain size of 35 ?m or less and including 90 area % or more of at least one of bainite and martensite, and the remainder of ferrite or pearlite.
    Type: Application
    Filed: December 19, 2022
    Publication date: December 12, 2024
    Applicant: POSCO CO., LTD
    Inventors: Dae-Woo KIM, Hong-ju LEE, Dae-Woo BAEK
  • Publication number: 20240323710
    Abstract: The present disclosure relates to a machine learning-based resource allocation method and device in a wireless communication system. A method of performing resource allocation in a wireless communication system according to an embodiment of the present disclosure may include acquiring DNN output information through a deep neural network (DNN) based on input H corresponding to wireless channel-related information; acquiring resource allocation matrix X having a form of a permutation matrix through an approximation operation to a doubly stochastic matrix based on input A corresponding to the DNN output information; and allocating M resource elements belonging to a set of first type resources to N resource elements belonging to a set of second type resources based on the resource allocation matrix.
    Type: Application
    Filed: August 31, 2022
    Publication date: September 26, 2024
    Applicant: Korea University Research and Business Foundation
    Inventors: In Kyu LEE, Min Seok KIM, Hong Ju LEE
  • Patent number: 12037667
    Abstract: The present invention relates to a thick steel suitable for use as a line pipe, a sour-resistant material, or the like and, more specifically, to a high-strength steel having excellent resistance to sulfide stress cracking, and a method for manufacturing same.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: July 16, 2024
    Assignee: POSCO CO., LTD
    Inventors: Seong-Ung Koh, Yoen-Jung Park, Hong-Ju Lee, Hyo-Shin Kim, Moo-Jong Bae
  • Publication number: 20240204201
    Abstract: A current collector for an anode-free all-solid-state battery is capable of effectively increasing a physical contact area between an electrolyte and a current collector and effectively reducing interfacial voids between the electrolyte and the current collector. In addition, an anode-free all-solid-state battery capable of stably increasing cycle life without overvoltage is provided.
    Type: Application
    Filed: August 17, 2023
    Publication date: June 20, 2024
    Inventors: Ga Hyeon Im, Hong Seok Min, Yun Sung Kim, Seung Ho Yu, Ji Hyun Lee, Beom Keun Cho, Hong Ju Lee
  • Publication number: 20240182158
    Abstract: A gear system for a mobile object may include: a first shaft unit configured to adjust a driving direction of a fuselage; a second shaft unit coupled to the first shaft unit and configured to retract the first shaft unit into the fuselage or extend the first shaft unit, retracted into the fuselage, from the fuselage; a driver configured to supply driving force through which the first shaft unit and the second shaft unit can move; and a power transmission unit configured to selectively transmit the driving force of the driver to one of the first shaft unit and the second shaft unit by coupling the driver to one of the first shaft unit and the second shaft unit.
    Type: Application
    Filed: May 18, 2023
    Publication date: June 6, 2024
    Inventors: Choung Hyoung Kim, Hong Ju Lee
  • Publication number: 20240110267
    Abstract: The present invention relates to a steel material for pressure vessels, offshore structures and the like and, more specifically, to a high-strength steel material having excellent low-temperature strain aging impact properties and a method for manufacturing same.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Applicant: POSCO CO., LTD
    Inventors: Kyung-Keun Um, Woo-Gyeom Kim, Hong-Ju Lee
  • Publication number: 20230343227
    Abstract: A system for controlling an aerial vehicle includes an autonomous control computer that detects a runway to estimate a state information error of the aerial vehicle, and a flight control computer that obtains state information of the aerial vehicle and transmits a determined flight mode of the aerial vehicle to the autonomous control computer when the flight mode of the aerial vehicle is determined as an autonomous flight mode based on the state information of the aerial vehicle.
    Type: Application
    Filed: November 21, 2022
    Publication date: October 26, 2023
    Inventors: Chang Hyun SUNG, Hye In JUNG, Jun Young LIM, Hong Ju LEE, Hyun Jee RYU, Gun Hee MOON, Kyu Nam KIM
  • Publication number: 20230331396
    Abstract: Disclosed are a flight control apparatus for an aerial vehicle and a method of operating the same. The flight control apparatus includes a communication circuit that establishes communication with a control system and receive first information related to operation information for controlling flight of an aerial vehicle from the control system, a sensor that obtains second information related to flight data of the aerial vehicle, a memory that stores a prediction model for predicting a flight state of the aerial vehicle based on the first information and the second information, and a flight parameter estimation value including at least one of a landing gear spring coefficient, an aerodynamic coefficient, a friction coefficient, an control surface effect, a thrust coefficient, or inertia moment or any combination thereof or any combination thereof, and a processor that is electrically connected to the communication circuit, the sensor, and the memory.
    Type: Application
    Filed: November 14, 2022
    Publication date: October 19, 2023
    Inventors: Hong Ju Lee, Gun Hee Moon, Hye In Jung, Kyu Nam Kim, Hyun Jee Ryu, Chang Hyun Sung, Jun Young Lim
  • Patent number: 11566308
    Abstract: Provided according to one preferred aspect of the present invention are austenitic steel material having superb abrasion resistance and toughness, and a method for producing the austenite steel material. The austenitic steel material having superb abrasion resistance and toughness according to one preferred aspect of the present invention comprises, in wt %, 0.6-1.9% carbon (C); 12-22% manganese (Mn); 5% or lower (excluding 0%) chromium (Cr); 5% or lower (excluding 0%) copper (Cu); 0.5% or lower (excluding 0%) aluminum (Al); 1.0% or lower (excluding 0%) silicon (Si); 0.1% or lower (including 0%) phosphorous (P); 0.02% or lower (including 0%) sulfur (S); and the rest in Fe and unavoidable impurities, and has the microstructure comprising, by surface area fraction, 97% or higher (including 100%) austenite and 3% or lower (including 0%) carbide.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 31, 2023
    Assignee: POSCO CO., LTD
    Inventors: Yong-Jin Kim, Hong-Yeol Oh, Hong-Ju Lee, Sang-Deok Kang, Yoen-Jung Park, Young-Deok Jung
  • Publication number: 20220410276
    Abstract: A machine tool having a separately replaceable tool post is provided. The machine tool includes supports that are facing each other with an axis line of a main axis in an axial direction therebetween; a rotation tool post detachably connected on one of the supports and rotatable with respect to a first direction perpendicular to the axis line; a fastening member detachably connecting the rotation tool post on the one of the supports, wherein the rotation tool post includes: a rotation unit configured to rotate in the first direction on the one of the supports; an upper fastening unit at an upper portion of the rotation unit, and detachably fastened to the one of the supports; and a lower fastening unit at a lower portion of the rotation unit, and detachably fastened to the one of the supports so that the rotation unit is rotatable.
    Type: Application
    Filed: September 6, 2022
    Publication date: December 29, 2022
    Applicant: HANWHA PRECISION MACHINERY CO., LTD.
    Inventors: Hong Ju LEE, Dong Geun KONG, Ji Han OH
  • Publication number: 20220340990
    Abstract: The present invention is to provide a steel plate with physical properties superior to existing steel plates used in fields such as industrial machinery, especially excellent low-temperature impact toughness along with high strength and high hardness, and a method for manufacturing same.
    Type: Application
    Filed: August 28, 2020
    Publication date: October 27, 2022
    Applicant: POSCO
    Inventors: Jae-Yong Chae, Hong-Ju Lee
  • Publication number: 20220010418
    Abstract: The present invention relates to a thick steel suitable for use as a line pipe, a sour-resistant material, or the like and, more specifically, to a high-strength steel having excellent resistance to sulfide stress cracking, and a method for manufacturing same.
    Type: Application
    Filed: October 25, 2019
    Publication date: January 13, 2022
    Inventors: Seong-Ung KOH, Yoen-Jung PARK, Hong-Ju LEE, Hyo-Shin KIM, Moo-Jong BAE
  • Patent number: 10655196
    Abstract: Provided are an austenitic steel having excellent machinability and ultra-low temperature toughness in a weld heat-affected zone including 15 wt % to 35 wt % of manganese (Mn), carbon (C) satisfying 23.6C+Mn?28 and 33.5C?Mn?23, 5 wt % or less (excluding 0 wt %) of copper (Cu), chromium (Cr) satisfying 28.5C+4.4Cr?57 (excluding 0 wt %), and iron (Fe) as well as other unavoidable impurities as a remainder, wherein a Charpy impact value of a weld heat-affected zone at ?196° C. is 41 J or more, and a method of manufacturing the steel. According to the present invention, a low-cost ultra-low temperature steel may be obtained, a stable austenite phase may be formed at low temperature, carbide formation may be effectively suppressed, and a structural steel having excellent machinability and ultra-low temperature toughness in a weld heat-affected zone may be provided.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: May 19, 2020
    Assignee: POSCO
    Inventors: Soon-Gi Lee, Jong-Kyo Choi, Young-Hwan Park, Hee-Goon Noh, Hyun-Kwan Cho, In-Shik Suh, In-Gyu Park, Hong-Ju Lee
  • Publication number: 20200140981
    Abstract: Provided according to one preferred aspect of the present invention are austenitic steel material having superb abrasion resistance and toughness, and a method for producing the austenite steel material. The austenitic steel material having superb abrasion resistance and toughness according to one preferred aspect of the present invention comprises, in wt %, 0.6-1.9% carbon (C); 12-22% manganese (Mn); 5% or lower (excluding 0%) chromium (Cr); 5% or lower (excluding 0%) copper (Cu); 0.5% or lower (excluding 0%) aluminum (Al); 1.0% or lower (excluding 0%) silicon (Si); 0.1% or lower (including 0%) phosphorous (P); 0.02% or lower (including 0%) sulfur (S); and the rest in Fe and unavoidable impurities, and has the microstructure comprising, by surface area fraction, 97% or higher (including 100%) austenite and 3% or lower (including 0%) carbide.
    Type: Application
    Filed: December 21, 2017
    Publication date: May 7, 2020
    Inventors: Yong-Jin Kim, Hong-Yeol Oh, Hong-Ju Lee, Sang-Deok Kang, Yoen-Jung Park, Young-Deok Jung
  • Publication number: 20180363111
    Abstract: The present invention relates to a steel material for pressure vessels, offshore structures and the like and, more specifically, to a high-strength steel material having excellent low-temperature strain aging impact properties and a method for manufacturing same.
    Type: Application
    Filed: December 15, 2016
    Publication date: December 20, 2018
    Inventors: Kyung-Keun UM, Woo-Gyeom KIM, Hong-Ju LEE