Patents by Inventor Wan Choi

Wan 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: 20240085786
    Abstract: The present invention relates to a naphthalimide sulfonate derivative, and a photoacid generator and a photoresist composition each comprising same and, more specifically, to a naphthalimide sulfonate derivative compound, and a photoacid generator and a photoresist composition each comprising same, wherein the compound has excellent absorbance for light of i-line (365 nm) wavelength, is greatly easy to prepare into a polymerizable composition due to very high solubility in an organic solvent, has good thermal stability, and shows a favorable acid generation rate.
    Type: Application
    Filed: December 28, 2021
    Publication date: March 14, 2024
    Applicant: SAMYANG CORPORATION
    Inventors: Chun Rim OH, Dae Hyuk CHOI, Yu Na CHOI, Deuk Rak LEE, Ji Eun CHOI, Ki Tae KANG, Min Jung KIM, Won Jung LEE, Chi Wan LEE
  • Publication number: 20240079599
    Abstract: Disclosed is an anodeless all-solid-state battery which may effectively control local volume expansion due to lithium deposited during charging of the battery. The all-solid-state battery includes an anode current collector, an intermediate layer located on the anode current collector, a solid electrolyte layer located on the intermediate layer, a cathode active material layer located on the solid electrolyte layer and including a cathode active material, and a cathode current collector located on the cathode active material layer. The intermediate layer includes carbon particles and metal particles alloyable with lithium, and the carbon particles include a first carbon material, e.g., as a spherical carbon material, and a second carbon material, e.g., a linear carbon material.
    Type: Application
    Filed: April 25, 2023
    Publication date: March 7, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Young Jin Nam, Hong Suk Choi, Seon Hwa Kim, Hee Soo Kang, Jae Min Lim, Sang Wan Kim
  • Publication number: 20240068851
    Abstract: Provided are a method, an apparatus, and a parameter training method for friction loss-based differential pressure flow rate measurement. The method includes receiving pipe information on a pipe through which fluid passes from a measurement sensor installed on the pipe, calculating physical properties of the fluid based on the pipe information, obtaining a first parameter related to pressure loss of the fluid that occurs in a first passing route in the pipe, obtaining a second parameter related to pressure loss of the fluid that occurs in a second passing route in the pipe, and outputting a flow rate of the fluid based on the pipe information, the physical properties of the fluid, the first parameter, and the second parameter.
    Type: Application
    Filed: August 22, 2023
    Publication date: February 29, 2024
    Inventors: Jongwoo CHOI, Wan Ki PARK, JINSOO HAN
  • Publication number: 20240063443
    Abstract: An embodiment battery module includes a plurality of battery cells provided as a pouch type, a plurality of cartridges, each of the cartridges holding the battery cells that are adjacent to each other and form a pair, a sensing block coupled to a lateral side of the plurality of cartridges to bind the plurality of cartridges to each other, the sensing block including a first connector configured to electrically connect the plurality of battery cells and a second connector configured to measure voltage of the plurality of battery cells, and a lateral cover coupled to an outward side of the sensing block to bind the sensing block and the plurality of cartridges to each other, the lateral cover including a first opening that exposes the first connector to an outside and a second opening that exposes the second connector to the outside.
    Type: Application
    Filed: May 16, 2023
    Publication date: February 22, 2024
    Inventors: Hyunchang Kang, Jun Young Lim, Seoha Kang, Jun Seok Choi, Kyubin Chung, Ji Woong Han, Wan Choi, Houk Park, Jae Eun Kim
  • Publication number: 20240051411
    Abstract: In an embodiment, a power conversion system includes: an on-board charger; a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to the auxiliary battery, the power converter comprising a bypass circuit and a buck switch. A part of the on-board charger and the power converter constitute a DC-DC converter, and the buck switch is configured to be repeatedly switched on and off when a voltage of the auxiliary battery is higher than a voltage of the main battery, and does not operate when the voltage of the auxiliary battery is not higher than the voltage of the main battery.
    Type: Application
    Filed: November 11, 2022
    Publication date: February 15, 2024
    Inventors: In Yong Yeo, Youn Sik Lee, Se Wan Choi
  • Publication number: 20240051431
    Abstract: A power conversion system includes: a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to auxiliary battery, the power converter comprising a bypass circuit and a buck converter. The buck converter includes a buck switch, and is configured to convert a voltage of the auxiliary battery into a voltage for recharging the main battery in accordance with an ON/OFF switching operation of the buck switch.
    Type: Application
    Filed: November 11, 2022
    Publication date: February 15, 2024
    Inventors: In Yong Yeo, Youn Sik Lee, Se Wan Choi
  • Patent number: 11870872
    Abstract: Disclosed are an electronic device and an operating method thereof. The electronic device and operating method are configured to detect the number for splitting one piece of content and allowing a plurality of edge nodes to split and store at least some of packets split from the content based on the number. Detecting the number may be performed based on an average amount of storage of the edge nodes for the content.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: January 9, 2024
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Wan Choi, Dongyeon Ko, Junil Choi
  • Patent number: 11833903
    Abstract: A hybrid powertrain of a vehicle, includes an input shaft provided concentric with an engine rotation shaft, a coaxial magnetic gear device provided to connect the engine rotation shaft to the input shaft, a differential device constantly connected to the input shaft, a first motor constantly connected to the engine rotation shaft, and a second motor continuously engaged to the differential device.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: December 5, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Min Ho Chae, Jae Wan Choi
  • Publication number: 20230369933
    Abstract: A stator of a motor has a structure including a plate portion coupled to a support structure for fixing a stator core and protrusions inserted into a bobbin. The support structure for fixing the stator core has a structure into which the protrusions of the stator core are inserted and extend into and on which the plate portion of the stator core is inserted and seated. The plate portion of the stator core is joined to the support structure while being coplanar with the support structure. Accordingly, the distance of a gap between the stator core of the stator and a permanent magnet of a rotor is minimized, thereby improving the performance of the motor.
    Type: Application
    Filed: November 30, 2022
    Publication date: November 16, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Dong Hee Lee, Jae Wan Choi, Sung Gon Byun, Ji Yeon Kim
  • Publication number: 20230311634
    Abstract: The present disclosure comprises a dual-rotor motor having an inner rotor and an outer rotor, a stator disposed between the inner rotor and the outer rotor, a cooling passage provided inside of the stator to block a magnetic path between inside and outside of the stator, and a refrigerant flowing through the cooling passage.
    Type: Application
    Filed: September 21, 2022
    Publication date: October 5, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Min Ho Chae, Jae Wan Choi
  • Publication number: 20230294504
    Abstract: A hybrid powertrain of a vehicle, includes an input shaft provided concentric with an engine rotation shaft, a coaxial magnetic gear device provided to connect the engine rotation shaft to the input shaft, a differential device constantly connected to the input shaft, a first motor constantly connected to the engine rotation shaft, and a second motor continuously engaged to the differential device.
    Type: Application
    Filed: September 16, 2022
    Publication date: September 21, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Min Ho CHAE, Jae Wan CHOI
  • Publication number: 20230269875
    Abstract: A display device including a display panel, a circuit board connected to the display panel, and a flexible circuit film which connects the display panel to the circuit board, the flexible circuit film being bendable. The circuit board includes an electronic component, a first area at which the circuit board is connected to the flexible circuit film, and a second area which is adjacent to the first area and corresponds to the electronic component. The flexible circuit film which is bent disposes the first area of the circuit board overlapping the display panel, together with both the second area of the circuit board and the electronic component non-overlapping the display panel, along a thickness direction of the display device.
    Type: Application
    Filed: December 5, 2022
    Publication date: August 24, 2023
    Inventors: YOUNG-JOO NAM, Dong Wan CHOI, JOOYOUNG KIM, Hyun Seop SONG
  • Patent number: 11659437
    Abstract: An electronic device is provided. The electronic device includes a communication circuit and a processor. The processor may be configured to obtain information on the number of predicted abnormal terminals, allocate different resources respectively to a plurality of terminal groups, wherein the number of the plurality of terminal groups is greater than the number of predicted abnormal terminals, obtain learning data of each of the plurality of terminal groups, and identify a final terminal group among the plurality of terminal groups, based on the learning data.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 23, 2023
    Assignee: Seoul National University R&DB Foundation
    Inventor: Wan Choi
  • Patent number: 11566438
    Abstract: A mobility hub is composed of a plurality of layers and serves as a terminal of a ground mobility and an air mobility. The mobility hub includes: a ground layer provided with an entrance of the ground mobility; a port layer provided with a taking-off and landing site of the air mobility; and a middle layer provided between the ground layer and the port layer. The middle layer has the ground mobility elevating in a space with the ground layer, is provided with a plurality of connection slots to which the ground mobility is connected, and provides an activity space through the ground mobility if the ground mobility is coupled to the connection slot.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: January 31, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sueng Ho Lee, Sun Sung Kwon, Byung Hoon Yang, Jeong Mo Jang, Kwang Hyun Won, So Ra Roh, Jae Wan Choi, Min Su Kim, Yoh Han Kim, Ji Hwan Byun
  • Patent number: 11545536
    Abstract: A display apparatus includes a lower substrate including a display area, a peripheral area and a pad area, a display structure disposed in the display area on the lower substrate, an upper substrate disposed on the display structure, a plurality of driving circuits disposed at a side of the pad area on the lower substrate and spaced apart from each other, a plurality of fan-out wires disposed between the plurality of driving circuits and the display structure in the pad area and the peripheral area on the lower substrate and electrically connecting the plurality of driving circuits and the display structure, and a functional module disposed on a bottom surface of the lower substrate. A first opening is formed in the lower substrate and disposed between adjacent ones of the plurality of fan-out wires, and the first opening and the functional module overlap each other.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 3, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Hye Eom, Dong Wan Choi
  • Patent number: 11528640
    Abstract: To consider a structure in which a radio module of a separate base station is extended/designed to have upper layer processing functions, as well as an RF processing function, the present invention defines a new fronthaul interface to reduce the fronthaul capacity required for transmitting data and a signal by a radio module in a separate base station.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: December 13, 2022
    Assignee: SK TELECOM CO., LTD.
    Inventors: Min Soo Na, Gi Wan Choi, Chang Soon Choi
  • Patent number: 11515333
    Abstract: Disclosed are: a three-dimensional flash memory in which the degree of integration in a horizontal direction is improved so as to promote integration; and a manufacturing method therefor. A three-dimensional flash memory according to one embodiment comprises: at least one channel layer extending in one direction; at least one ferroelectric film used as a data storage place while being extended in the one direction so as to encompass the at least one channel layer; and a plurality of electrode layers stacked so as to be vertically connected to the at least one ferroelectric film.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: November 29, 2022
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Yun Heub Song, Chang Wan Choi, Jae Kyeong Jeong
  • Publication number: 20220377601
    Abstract: An electronic device is provided. The electronic device includes a communication circuit and a processor. The processor may be configured to obtain information on the number of predicted abnormal terminals, allocate different resources respectively to a plurality of terminal groups, wherein the number of the plurality of terminal groups is greater than the number of predicted abnormal terminals, obtain learning data of each of the plurality of terminal groups, and identify a final terminal group among the plurality of terminal groups, based on the learning data.
    Type: Application
    Filed: August 31, 2021
    Publication date: November 24, 2022
    Inventor: Wan CHOI
  • Patent number: 11487698
    Abstract: Disclosed herein are a parameter server and a method for sharing distributed deep-learning parameters using the parameter server. The method for sharing distributed deep-learning parameters using the parameter server includes initializing a global weight parameter in response to an initialization request by a master process; performing an update by receiving a learned local gradient parameter from the worker process, which performs deep-learning training after updating a local weight parameter using the global weight parameter; accumulating the gradient parameters in response to a request by the master process; and performing an update by receiving the global weight parameter from the master process that calculates the global weight parameter using the accumulated gradient parameters of the one or more worker processes.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: November 1, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Shin-Young Ahn, Eun-Ji Lim, Yong-Seok Choi, Young-Choon Woo, Wan Choi
  • Patent number: D1015994
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: February 27, 2024
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventors: Hyung Soo Kim, Jong Wan Choi, Sang Hun Yoo