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).

  • 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: 11546389
    Abstract: An electronic device and method are provided for registering a device in a server through an application installed in an external device different from the device. The method includes providing a first user interface for inputting a user ID; causing, through the application, the external device to connect to the server using the user ID; providing a second user interface for receiving a user input to select a function to identify the device; causing the external device to connect to the device, in response to a message received from the device; obtaining, from the device, identification information of the device; controlling to transmit a registration request message, to the server, for requesting registration of the device in the server, the registration request message including the identification information of the device; and in response to registration of the device in the server, providing a third user interface including a visual indication of the device being registered in the server.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 3, 2023
    Inventors: Chang Hwan Hwang, Sahng Hee Bahn, Sung Soo Hong
  • Patent number: 11542171
    Abstract: The present invention relates to a method for preparing ZSM-5 zeolite. The present invention can provide a method for preparing ZSM-5 zeolite comprising the steps of: preparing a first solution in a solution state by heating a mixture comprising a silica source, an alumina source, a neutralizing agent and a crystalline ZSM-5 nucleus; preparing a reaction mother liquid by mixing a second solution comprising salts into the first solution; and continuously crystallizing by continuously supplying the reaction mother liquid to a hydrothermal synthesis reactor, wherein formula [1] below is satisfied. 0.20?Wa/Wb?0.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 3, 2023
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Na Young Kang, Yong Ki Park, Chang Hwan Kim, Yu Jin Lee
  • Patent number: 11542351
    Abstract: The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and satisfies the following requirements (provided that S1+S2+S3=1), when measuring the relative content of peak area according to melting temperature (Tm) using SSA (Successive Self-nucleation and Annealing) analysis: the content(S1) of peak area at Tm less than 100° C. is 0.33 to 0.35; the content(S2) of peak area at Tm of 100° C. or more and 120° C. or less is 0.52 to 0.56; and the content(S3) of peak area at Tm greater than 120° C. is 0.10 to 0.14.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 3, 2023
    Inventors: Jeongkyu Lee, Sung Min Lee, Hyojoon Lee, Chang Hwan Jang, Sung Ho Park, Seul Ki Im, Jinyoung Lee, Sung Joon Oh, Seyoung Kim, Jisoo Song
  • Publication number: 20220392918
    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: Application
    Filed: June 14, 2021
    Publication date: December 8, 2022
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Chang Hwan CHOI, Yun Heub SONG, Bon Cheol KU
  • Patent number: 11499465
    Abstract: A vehicle exhaust gas purification system and a control method thereof that may effectively remove nitrogen oxides in an exhaust gas even in a cold state, which is the initial stage of an engine starting, is disclosed.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: November 15, 2022
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Hyokyung Lee, Chang Hwan Kim
  • Publication number: 20220350932
    Abstract: A data storage device includes a nonvolatile memory device, a volatile memory device, a data encryption circuit configured to encrypt data outputted from the nonvolatile memory device, a data decryption circuit configured to decrypt encrypted data output from the data encryption circuit and configured to provide the decrypted data to the volatile memory device, and a processor configured to perform a first process that controls installation of a first in-storage program in the data storage device, a second process configured to manage a mapping table storing a relation between a logical address and a physical address of the nonvolatile memory device, and a third process configured to execute the first in-storage program.
    Type: Application
    Filed: April 28, 2021
    Publication date: November 3, 2022
    Inventors: Jian HUANG, Xiaohao WANG, Luyi KANG, Jong Ryool KIM, Hyung Jin LIM, Myeong Joon KANG, Chang Hwan YOUN
  • Publication number: 20220342309
    Abstract: Proposed is a photosensitive resin composition including a siloxane copolymer having both a thermosetting functional group and a photocurable functional group. The composition, according to this disclosure, is capable of both thermal curing and photo-curing and thus can form a stable cured film in a flexible display process where a low-temperature process of 150° C. or less is essential.
    Type: Application
    Filed: April 20, 2022
    Publication date: October 27, 2022
    Inventors: Seung Han JEON, Hyoc Min YOUN, Jin Sun KIM, Jong Ho JEONG, Eui Soon KIM, Young Jun RYU, Chang Hwan AHN
  • Publication number: 20220326134
    Abstract: A biosensor using an exceptional point is disclosed. A biosensor according to one embodiment of the present disclosure includes: a biosensing unit configured to output wavelength-separated optical signals from destruction of an exceptional point resulting from attachment of biomolecules; a detection unit configured to convert the wavelength-separated optical signals into wavelength-separated electrical signals; an analysis unit configured to measure a beat frequency resulting from the wavelength-separated electrical signals; and a determination unit configured to determine a wavelength difference resulting from the beat frequency, thereby determining the amount of the biomolecules therefrom.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 13, 2022
    Inventors: Chil Min KIM, Jin Hyeok RYU, Chang Hwan YI
  • Patent number: 11465133
    Abstract: Disclosed is a method of preparing a high-performance zeolite catalyst for reducing nitrogen oxide emissions, and more particularly a technique for preparing a zeolite catalyst, suitable for use in effectively removing nitrogen oxide (NOx), among exhaust gases emitted from vehicle internal combustion engines through selective catalytic reduction (SCR), thereby exhibiting high efficiency, high chemical stability and high thermal durability upon SCR using the prepared catalyst.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: October 11, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Heesuna Catalysts Corporation
    Inventors: Pyung Soon Kim, Young Jin Kim, Chang Hwan Kim, Seung Chui Na, Seung Ho Oh, Young San Yoo, Ho Dong Kim
  • Publication number: 20220318769
    Abstract: Disclosed is a method of processing item sales information by an electronic apparatus, the method including obtaining a purchase request, which includes item information related to an item selected by a user and information related to a payment option, providing, when the item information corresponding to the item and the information related to the payment option satisfy a first condition, the user with a purchase response, which includes approval information corresponding to the purchase request, in response to the purchase request, prior to payment of the item by the user through the payment option, generating release request information for the item, and generating settlement information corresponding to the cost of the item, wherein the cost of the item is settled with the seller on the basis of the settlement information.
    Type: Application
    Filed: May 12, 2021
    Publication date: October 6, 2022
    Inventors: Chang Hwan Han, An Na Cho, Jong Kook Chung, Mi Sung Bae, Jae Uk Lee, Hae Seong Jeon, Young Kyo Jung, Byung Jae Kim
  • Patent number: 11456319
    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: Grant
    Filed: May 25, 2021
    Date of Patent: September 27, 2022
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Yun Heub Song, Sun Jun Choi, Chang Hwan Choi, Jae Kyeong Jeong
  • Publication number: 20220297509
    Abstract: A compressor control apparatus and method includes: a sensor configured to detect air conditioner operation state information necessary to control engagement and disengagement of a clutch of an air conditioner compressor; an electromagnetic coil in the clutch of the air conditioner compressor configured to perform clutch engagement upon receiving battery current; a microcomputer configured to determine whether the current air conditioner operation state satisfies a clutch engagement allowance condition or a clutch disengagement condition based on the air conditioner operation state information detected by the sensor and to output an operation signal based on the result of determination; and a switch configured to be turned on or off according to the operation signal output by the microcomputer and to control supply of the battery current to the electromagnetic coil such that clutch engagement or clutch disengagement is performed.
    Type: Application
    Filed: November 9, 2021
    Publication date: September 22, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Ji Wan Son, Chang Hwan Kim, Sang Hun Lee, Tae Woong Lim, Jin Sung Kim
  • Publication number: 20220297753
    Abstract: The present invention provides a sensing device comprising: a rotor; and a stator in which the rotor is disposed, wherein the stator comprises a stator tooth and a stator body, the stator tooth comprises a first stator tooth and a second stator tooth disposed inside the first stator tooth, at least one of the first stator tooth and the second stator tooth includes a tip protruding toward the center axis of the stator, and the tip is disposed at one surface of the stator body.
    Type: Application
    Filed: August 26, 2020
    Publication date: September 22, 2022
    Inventors: Chang Hwan LEE, Ye Won KWON
  • Publication number: 20220277975
    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: Application
    Filed: February 25, 2022
    Publication date: September 1, 2022
    Applicant: SK hynix Inc.
    Inventors: Jin Hee HAN, Byoung Ho LEE, Chang Hwan LEE, Jung Min LEE, Seong Min MA
  • Publication number: 20220266751
    Abstract: The disclosure refers to an internal rearview device (1) adapted for use with a motor vehicle, comprising: a rearview element comprising at least one of a reflective element (10) and a display element, with the rearview element having a normal state and at least one anti-glare state, in which a glare experienced by a driver of the vehicle as a result of light reflected at the rearview element is reduced; a bezel (32) surrounding the rearview element and being surrounded by a housing (60); control means comprising sensor means connected to at least one printed circuit board (40, 50), which is arranged between the housing (60) and the rearview element, for controlling at least the state of the rearview element; and a mount assembly (70) which is configured to attach the housing (60) to the vehicle; wherein the perimeter edge (31) of the bezel (32) is exposed to and is viewable by the driver of the vehicle when said device (1) is normally mounted in the vehicle; said perimeter edge (31) comprises a curved surfac
    Type: Application
    Filed: July 23, 2020
    Publication date: August 25, 2022
    Inventors: Andreas Herrmann, Chang Kyun Han, Cheol Ho Yim, Ho Jin Huh, Won Sik Hong, Geon Young Choi, Chang Hwan Lim, Freshipali Ali