Patents by Inventor Chang Hwan AN

Chang Hwan AN 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: 20230234586
    Abstract: A vehicle speed controlling apparatus comprising a driving mode selector configured to receive a selection of a periodic-speed driving mode from a user, a driving strategy control unit including a speed profile generator configured to generate a periodic-speed driving speed profile with a period, an amplitude, and an average speed, and a driving assistance unit configured to output a required torque for a driving motor to follow the periodic-speed driving speed profile.
    Type: Application
    Filed: September 19, 2022
    Publication date: July 27, 2023
    Inventors: Ye Chan Jeong, Sang Joon Kim, Chang Hwan Kim, In Kyu Lee, Young Sun Nam, Doo Hyun Kim, Sung Hoon Yu, Lee Hyoung Cho, Chang Jin Oh, Nam Kwon Lee, Young Eun Kim, Jong Wha Kim, Hyun Kim, Oh Eun Kwon
  • Patent number: 11692890
    Abstract: A torque index sensor including a substrate; a first cover which accommodates the circuit board; a first hall sensor and a second hall sensor which are disposed on the circuit board; a magnet seating member which is coupled to the stator; a second magnet which is coupled to the magnet seating member; and a second cover made of a metal material coupled with the first cover. Further, the magnet seating member and the second magnet are disposed between the first cover and the second cover, the second cover comprises: an upper plate on which a through hole is formed; and a side plate which extends in the rotational axis direction from the upper plate, and the side plate comprises a groove formed at a position corresponding to the hall sensor.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: July 4, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Chang Hwan Lee, Sung Wook Byun
  • Publication number: 20230191362
    Abstract: The present invention relates to a hydrocarbon adsorbent with metal-impregnated zeolite particles having regular mesopores and a manufacturing method therefor. The hydrocarbon adsorbent includes a metal cation and a metal oxide that are impregnated in zeolite particles, in particular, the zeolite particles include regularly formed mesopores having a size of 2 to 10. By adjusting a Si/Al ratio and mesoporosity of the mesopores, a hydrocarbon adsorbent may have increased adsorption capacity for hydrocarbons in a cold-start section and can rapidly oxidize the hydrocarbon upon desorption thereof, thereby reducing the discharge of exhaust gas produced in automobiles and industries.
    Type: Application
    Filed: February 3, 2023
    Publication date: June 22, 2023
    Inventors: Jungkyu Choi, Kwan Young Lee, Eun-Hee Jang, Chang Hwan Kim, Chun Yong Kang
  • Publication number: 20230190429
    Abstract: The present disclosure relates to an oral irrigator including: a storage unit configured to store water; a pumping unit configured to pump water of the storage unit; a nozzle unit configured to inject the water pressurized by the pumping unit into an oral cavity; and a controller configured to control of the pumping unit, wherein the controller is configured to store a pattern in which an initial stage of gradually increasing load of the pumping unit, a preliminary cleaning stage of maintaining an injection pressure at a first pressure , a full-scale cleaning stage of maintaining the injection pressure higher than the first pressure and a final cleaning stage of maintaining the injection pressure at a third pressure lower than the second pressure and the load of the pumping unit is automatically controlled based on the pattern according to a one-time input of an operation signal.
    Type: Application
    Filed: December 9, 2022
    Publication date: June 22, 2023
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Chang Hwan HYUN, Seon Ung MIN, Eun Mi KIM, Ki Jung KIM
  • Publication number: 20230195321
    Abstract: A storage device and an operating method thereof are provided. Provided is a storage device including, a memory cell, and a storage controller which includes a flash controller that performs a data operation on the memory cell, and a processor that executes an RTOS (Real Time Operating System) for controlling the flash controller, wherein the RTOS communicates with the storage controller and operates in a normal operation mode, the RTOS generates a snapshot data in a debug mode when a defect occurs, the RTOS switches to the debug mode through context switching in the normal operation mode, and the RTOS operates in the normal operation mode, when an urgent work occurs, while performing an operation of generating the snapshot data in the debug mode.
    Type: Application
    Filed: July 18, 2022
    Publication date: June 22, 2023
    Inventors: Sung Jin MOON, Chang Hwan KIM, Young-Sik LEE, Eun Ju CHOI
  • Patent number: 11682398
    Abstract: An electronic apparatus includes: a communication device configured to receive a signal from each of a plurality of acceleration sensors attached to a face of a user; a memory configured to store a classification learning model that classifies words based on a plurality of sensor output values; and a processor configured to determine a word corresponding to a mouth shape of the user by input a value of the received signal to the classification learning model, when the signal is received from each of the plurality of acceleration sensors.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: June 20, 2023
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Chang-Hwan Im, Jinuk Kwon, Younsoo Chae
  • Publication number: 20230183879
    Abstract: A method for creating oil-filled porous anodic oxide coatings for stainless steel is disclosed. The coating has anti-corrosion and omniphobic properties to resist both atmospheric conditions, or other conditions with exposure to vapor, and wet conditions, in which the coating is exposed to and/or immersed in liquid. The anodic oxide coating of the present invention can be made by the steps of cleaning and/or electropolishing a steel substrate, applying anodic oxidation to the steel substrate, washing the steel substrate in an organic solvent, and annealing the substrate at high temperature. To fill the porous coating with an oil, a solvent exchange method may be applied.
    Type: Application
    Filed: October 21, 2022
    Publication date: June 15, 2023
    Applicant: THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY
    Inventors: Chang-Hwan Choi, JungHoon Lee
  • Publication number: 20230173455
    Abstract: A hydrocarbon adsorbent according to one exemplary embodiment of the present invention includes a beta zeolite containing copper, in which a Si/Al molar ratio of the beta zeolite is 12.5 to 150, and the amount of the copper contained is 1 wt % to 10 wt %.
    Type: Application
    Filed: January 27, 2023
    Publication date: June 8, 2023
    Applicant: Korea University Research and Business Foundation
    Inventors: Chun Yong KANG, Chang Hwan KIM, Jungkyu CHOI, Eunhee JANG, Jin Seong KIM, La Young CHOI
  • Publication number: 20230175158
    Abstract: A method for creating oil-filled porous anodic oxide coatings for metallic surfaces is disclosed. The coating has anti-corrosion and omniphobic properties to resist both underwater and atmospheric conditions. To realize oil-impregnated three-dimensional bottle-shaped pores in the oxide layer in anodizing aluminum, the following steps may be taken. First, the target surface may be cleaned and electropolished. Then, a first anodizing step at a lower voltage is applied to create relatively small-diameter pores in the entrance (i.e., top) region of the oxide layer, followed by a second anodizing step at a higher voltage to subsequently create larger-diameter pores in the base (i.e., bottom) region of the oxide layer. Pore widening follows to enlarge the overall pore diameters. To fill the porous coating with an oil, a solvent exchange method may be utilized.
    Type: Application
    Filed: October 28, 2022
    Publication date: June 8, 2023
    Applicant: THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY
    Inventors: Chang-Hwan CHOI, Junghoon LEE
  • Patent number: 11666887
    Abstract: A hydrocarbon adsorbent includes a core-shell particle including a core and a shell surrounding the core, wherein the core includes ion-exchanged zeolite that is ion-exchanged with a metal other than silicon (Si) and aluminum (Al) and the shell includes a mesoporous metal oxide.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: June 6, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Chun Yong Kang, Chang Hwan Kim, Jungkyu Choi, Eun-Hee Jang, Jin Seong Kim, Hwiyoon Noh, La Young Choi
  • Patent number: 11669693
    Abstract: An electronic apparatus includes an input unit comprising input circuitry configured to receive a natural language input, a communicator comprising communication circuitry configured to perform communication with a plurality of external chatting servers, and a processor configured to analyze a characteristic of the natural language and a characteristic of the user and to identify a chatting server corresponding to the natural language from among the plurality of chatting servers, and to control the communicator to transmit the natural language to the identified chatting server in order to receive a response with respect to the natural language.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: June 6, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-hwan Choi, Ji-hwan Yun, Man-un Jeong
  • Publication number: 20230169258
    Abstract: A method determines a degree of compatibility of a web content with a vehicle display device. The method includes steps of: (a) the compatibility-determining server generating a specific render tree by referring to specific web content information; (b) the compatibility-determining server determining whether the specific web page is compatible with the vehicle display device according to a verifying scenario, wherein the verifying scenario is configured as a predetermined program by referring to at least part of (i) at least one first component included in the specific render tree and (ii) at least one second component included in the specific specification information; and (c) in response to determining that the specific web page is compatible, the compatibility-determining server performing or supporting another device to perform a process of displaying the specific web page on a display of the vehicle display device.
    Type: Application
    Filed: November 15, 2022
    Publication date: June 1, 2023
    Applicant: Obigo Inc.
    Inventors: Chang Hwan LEE, Young Min KIM
  • Publication number: 20230132625
    Abstract: An electrostatic cleaning device includes: a static electricity generator configured to generate static electricity; a handle part connected to one side of the static electricity generator; and a cleaning tool adapted to be assembled to and disassembled from the static electricity generator. The static electricity generator includes a first electrified body part configured as a donut-shaped case and configured to deliver a negative charge to the cleaning tool; a belt rotatably installed in an inner space of the first electrified body part and configured to transfer the negative charge; and a second electrified body part configured to supply the negative charge to the belt.
    Type: Application
    Filed: August 24, 2022
    Publication date: May 4, 2023
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Chang Hwan HYUN, Eun Mi KIM, Yoon Ji CHOI, Jung Yong LEE
  • Patent number: 11626306
    Abstract: A method for analyzing a semiconductor device includes repeatedly etching an entire surface of a wafer at a same etch rate by a target depth to expose a next surface of the wafer. The method includes obtaining two-dimensional structure information from each repeatedly etched surface of the wafer and serially stacking the repeatedly obtained two-dimensional structure information to generate a three-dimensional image.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: April 11, 2023
    Assignee: SK hynix Inc.
    Inventors: Jin Hee Han, Byoung Ho Lee, Chang Hwan Lee, Jung Min Lee, Seong Min Ma
  • Patent number: 11616081
    Abstract: Disclosed is a method of manufacturing a three-dimensional semiconductor memory device including a ferroelectric thin film. The method includes forming a mold structure including interlayer dielectric layers and sacrificial layers alternately stacked on a substrate, forming channel holes penetrating the mold structure, forming vertical channel structures inside the channel holes, forming an isolation trench penetrating the mold structure and having a line shape extending in one direction, selectively removing the sacrificial layers exposed by the isolation trench, forming gate electrodes filling a space from which the sacrificial layers are removed, and performing a heat treatment process and a cooling process for the vertical channel structures.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: March 28, 2023
    Inventors: Chang Hwan Choi, Yun Heub Song, Bon Cheol Ku
  • Publication number: 20230073432
    Abstract: A hidden lighting lamp uses a color conversion material and is applied to a vehicle. A color conversion member is spaced apart from a light source by a light source air gap (La) such that the color conversion member is integrally engaged with a lens for projecting light of the light source to the outside or such that the color conversion member is spaced apart from the lens by a lens air gap (Lb). Hidden lighting without deterioration of optical efficiency of LED light from the light source is thereby implemented. One or more of a black painting, a coating layer, an application layer, and a deposition layer are provided, thereby providing concealment of the lamp inner space of the lens, anti-peeling of a deposit, and diversity of fluorescent color.
    Type: Application
    Filed: August 17, 2022
    Publication date: March 9, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAI MOBIS CO., LTD.
    Inventors: Seung-Pyo Hong, Yun-Min Cho, Ju-Hyun Kim, Chang-Hwan Oh, Jung-Woo Shin, Dong-Joo Park, Han-Soo Park
  • Publication number: 20230025974
    Abstract: Smart membranes (14) are integrated into a small, unmanned surface vessel (20) to enable the efficient, automated cleanup of oil spills. Such a vessel (20) has the potential to provide a low-cost, modular solution for day-to-day oil-spill cleanup operations, especially in confined aquatic areas, such as under piers and in the small spaces between marine vessels and piers. The smart membranes (14) are provided on the surface of a conveyor belt (34) that circulates the membranes (14) through the surrounding body of water (10) for oil collection, as well as through an internal reduction chamber (22) of the vessel (20) for oil release. The smart membranes (14) are adapted to attract and repel oil (12) in response to low-voltage commands applied across the conveyor belt (34), using a process that is repeatable for a number of cycles, offering high efficiency and long durability (FIG. 5).
    Type: Application
    Filed: August 4, 2022
    Publication date: January 26, 2023
    Applicant: THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY
    Inventors: Eui-Hyeok Yang, Jian Xu, Wei Xu, Brendan Englot, Chang-Hwan Choi
  • Publication number: 20230023199
    Abstract: A method of detecting a lane line based on lidar data can include detecting, by a processor, points each estimated as a lane line in a lidar data, performing, by the processor, an estimation operation of estimating parameters of a mathematical model using the detected points, and performing, by the processor, a setting operation of calculating distances between each of the detected points and the mathematical model in which the parameters are estimated and setting the calculated distances as scores. The method can further include performing, by the processor, a summation operation of summing the scores, and setting, by the processor, the mathematical model determined according to the summation score as a lane line.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 26, 2023
    Inventors: Jae Wook HWANG, Chang Hwan CHUN
  • Publication number: 20230019540
    Abstract: Provided are a three-dimensional semiconductor memory device, a method for manufacturing the same, a method for operating the same, and an electronic system including the same. The three-dimensional semiconductor memory device includes a substrate, a stack structure on the substrate, and vertical channel structures, which are provided in channel holes penetrating the stack structure, wherein each of the vertical channel structures includes a data storage pattern, a vertical channel pattern, a conductive pad, and a vertical semiconductor pattern, wherein the vertical channel pattern includes a first portion contacting the upper surface of the substrate and a second portion provided between the data storage pattern and the vertical semiconductor pattern, and wherein the vertical semiconductor pattern is spaced apart from the substrate with the first portion of the vertical channel pattern therebetween.
    Type: Application
    Filed: September 23, 2022
    Publication date: January 19, 2023
    Applicant: Industry-University Cooperation Foundation Hanyang University
    Inventors: Yun Heub SONG, Sun Jun CHOI, Chang Hwan CHOI, Jae Kyeong JEONG
  • Patent number: RE49563
    Abstract: Provided is a negative capacitance FinFET device including a FinFET device including a gate stack, a drain electrode and a source electrode formed on a substrate and a ferroelectric negative capacitor connected to the gate stack of the FinFET device and having a negative capacitance. The FinFET device has an extension length (Lext) from a side-wall of the gate stack to the drain electrode or the source electrode and the extension length is set such that a size of a hysteresis window in the negative capacitance FinFET device is 1 V or less.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: June 27, 2023
    Inventors: Chang Hwan Shin, Eun Ah Ko