Patents by Inventor In Hwan Choi

In Hwan 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: 20230111255
    Abstract: A heat exchanger for heating a fluid flowing through a pipe using a combustion gas includes: a body including open upper and lower ends and having a space formed therein to allow the combustion gas to pass therethrough; a combustor formed in an upper portion of the space in which combustion of the combustion gas occurs; a heat exchange portion formed below the combustor and provided with a heat exchange pipe configured to heat an internal fluid by using the combustion gas; and a heat return pipe provided outside the space so as to be in contact with an outer surface of the body, wherein the combustor and the heat exchange portion may be unitarily formed, and the body in which the combustor is formed includes a concave portion protruding concavely inward so as to correspond to a shape of an outer circumferential surface of the heat return pipe.
    Type: Application
    Filed: May 9, 2022
    Publication date: April 13, 2023
    Inventors: Jin Min CHOI, Sung-Hwan CHOI
  • Patent number: 11622240
    Abstract: A vehicle may include a notification type determination device configured to identify a type of a text message received through a communication terminal and determining a notification type of the text message when the type of the text message is a public warning text, a notification content determination device configured to analyze a text string of the text message and determine notification content associated with the text message when the type of the text message is the public warning text, and an output device configured to output a notification to a passenger depending on the notification type and the notification content.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: April 4, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Seo Hwan Choi, Seong Soo Yae, Hyun Woo Lee
  • Publication number: 20230095681
    Abstract: Provided is a method for purifying an alkylene glycol monoalkyl ether carboxylic acid ester (AGAECE) for photoresist processing, wherein the method comprises the step of distillation after passing industrial AGAECE through a porous adsorbent impregnated with a basic material, and it is possible to obtain a semiconductor-grade high-purity AGAECE maintaining a low acid value and high purity according to the present invention.
    Type: Application
    Filed: September 21, 2022
    Publication date: March 30, 2023
    Applicant: JAEWON INDUSTRIAL CO., LTD
    Inventors: Sung Won SHIM, Byung Ki SON, Hwan CHOI, Youn Soo SHIN, Hwa Yeong CHOI, Ho JEONG
  • Publication number: 20230099450
    Abstract: An algae treatment device of the present invention is installed in a ship or a barge and selectively destroys only the air-sacs of algae by discharging high-voltage micro pulses into waters of interest in which green tide or red tide has occurred. Thus, the algae treatment device can efficiently solve green tide or red tide by treating algae using a minimal amount of chemicals, or none at all.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 30, 2023
    Applicant: SUN & SEA CO., LTD.
    Inventors: Chul-yeong KIM, Heesung LEE, Youngseong LIM, Gil Hwan CHOI
  • 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
  • Patent number: 11613099
    Abstract: A glass stack structure includes: a carrier plate having a width in a first direction and a length in a second direction; a stack glass on the carrier plate and including mother glasses sequentially stacked therein; adhesive lines including a high viscous material and arranged at peripheral portions of the carrier plate and the mother glasses to adhere the carrier plate to the mother glasses, and the adhesive lines includes wave lines extending in the second direction and spaced apart from each other in the first direction and linear lines extending in the first direction and spaced apart from each other in the second direction; and an adhesive layer including a low viscous material and covering a cell area of the carrier plate and the mother glasses to adhere the carrier plate to the mother glasses, where the cell area is defined by the wave lines and the linear lines.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: March 28, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seungjun Lee, Sung-Shin Kwak, Sunkwan Kim, Daeho Yang, Jun Hwan Choi
  • Patent number: 11614488
    Abstract: Disclosed is a method and apparatus for real-time estimation of full parameters of a permanent magnet synchronous motor. According to this method and apparatus, it is possible to estimate in real time all four parameters of a permanent magnet synchronous motor without additional signal injection. In addition to the state equation, the “stator current ripple model” is additionally used to fundamentally solve the rank deficiency problem in the state equation without injecting additional signals. All four parameters of a permanent magnet synchronous motor can be estimated in real time.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: March 28, 2023
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Kyung Soo Kim, Kyung Hwan Choi, Seok Kyoon Kim
  • Publication number: 20230088689
    Abstract: A display device includes a housing, a display module, a support film, and a frame. The display module is accommodated in the housing in a first state and unrolled from the housing to a first direction in a second state. The support film is accommodated in the housing in the first state and unrolled from the housing to the first direction in the second state to support the display module. The frame shrinks to a first shape in the first state and expands to a second shape in the second state in a way such that the frame applies a tensile stress to the support film in the second state.
    Type: Application
    Filed: June 9, 2022
    Publication date: March 23, 2023
    Inventors: JAEHO AHN, BEOMJIN KIM, TAEWOONG KIM, JIN HWAN CHOI
  • Publication number: 20230078747
    Abstract: An embodiment provides a display device including a first roller and a second roller spaced apart from each other, a rotation belt surrounding the first roller and the second roller; and a display panel including a portion disposed on the rotation belt, wherein the display panel is extended by being released from the rotation belt in a first direction.
    Type: Application
    Filed: July 7, 2022
    Publication date: March 16, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jae Ho AHN, Beom Jin KIM, Tae Woong KIM, Sang Jun LEE, Jin Hwan CHOI
  • Patent number: 11596381
    Abstract: A system may include an ultrasound probe and a controller unit configured to communicate with the ultrasound probe. The controller unit may be further configured to transmit ultrasound signals using the ultrasound probe toward an area of interest in a patient's body, wherein the ultrasound signals include a fundamental frequency signal and at least one harmonic frequency signal; receive echo signals from the area of interest based on the transmitted ultrasound signals; obtain a fundamental frequency echo signal and at least one harmonic frequency echo signal from the received echo signals; and generate a visual representation of the area of interest based on the obtained fundamental frequency echo signal and the obtained at least one harmonic frequency echo signal.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: March 7, 2023
    Assignee: Verathon Inc.
    Inventors: Joon Hwan Choi, Fuxing Yang
  • Patent number: 11592958
    Abstract: A method for controlling a display device that includes a touch screen is provided. The method includes establishing a plurality of window display spaces in the touch screen, wherein each of the plurality of window display spaces displays a window for running an application, displaying a launcher application in one of the plurality of window display spaces, the launcher application presenting at least one icon to run at least one application, receiving in the launcher application a new application run command to run a new application, and displaying a new window for running the new application in one of the other window display spaces than the window display space where the launcher application is displayed, in response to the new application run command.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: February 28, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Jin Kim, Kang-Tae Kim, Dae-Wook Park, Seung-Woon Lee, Jung-Hwan Choi
  • Publication number: 20230056973
    Abstract: A display device includes: a display module, a lifting part disposed on a rear surface of the display module and connected to the display module, and a drive belt connected to the lifting part and which moves in a first direction to extend and retract the lifting part in the first direction. The drive belt moves along a guide groove that is defined in the lifting part and that is open in the first direction.
    Type: Application
    Filed: April 13, 2022
    Publication date: February 23, 2023
    Inventors: TAE WOONG KIM, SANGJUN LEE, BEOMJIN KIM, JONGHWA LEE, JIN HWAN CHOI
  • Publication number: 20230057178
    Abstract: A semiconductor device including an error amplifier configured to receive a voltage of an output node and a reference voltage, a flipped voltage follower (FVF) circuit configured to receive an output of the error amplifier and maintain the voltage of the output node at the reference voltage, and a bias current control circuit configured to receive first to third mode signals, control a magnitude of a bias current flowing through the FVF circuit based on the first to third mode signals, control the bias current of a first magnitude, based on the first mode signal, control the bias current of a second magnitude smaller than the first magnitude, based on the second mode signal, and control the bias current of a third magnitude smaller than the second magnitude, based on the third mode signal.
    Type: Application
    Filed: May 13, 2022
    Publication date: February 23, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kyoung Jun ROH, Jae Woo PARK, Jun Han CHOI, Myoung Bo KWAK, Jung Hwan CHOI
  • Patent number: 11579246
    Abstract: A radar apparatus includes an antenna device including a first transmitting antenna, a second transmitting antenna, and a receiving antenna, a transceiver configured to transmit a transmission signal through one of the first transmitting antenna and the second transmitting antenna and receive a reflection signal reflected on an object through the receiving antenna, and a controller configured to process the reflection signal received through the receiving antenna to obtain information on the object, wherein the controller controls the transceiver to receive the reflection signal through the second transmitting antenna and the receiving antenna when the transmission signal is transmitted through the first transmitting antenna.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: February 14, 2023
    Assignee: HL KLEMOVE CORP.
    Inventors: Han Byul Lee, Jung Hwan Choi
  • Patent number: 11582337
    Abstract: An artificial intelligence system and method are disclosed herein. The system includes a processor which implements the method, including: receiving by an input unit a first user input including a request to execute a task using at least one of the electronic device or an external device, transmitting by a wireless communication unit first data associated with the first user input to an external server, receiving a first response from the external server including information associated with at least one of the first user input and a sequence of electronic device states for performing at least a portion of the task, receiving a second user input assigning at least one of a voice command and a touch operation received by a touch screen display as the request to perform the task, and transmitting second data associated with the second user input to the external server.
    Type: Grant
    Filed: October 7, 2021
    Date of Patent: February 14, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Hwan Choi, Sang-Wook Kang, Young-Hoon Kim, Seung-Hoon Park, Hyun-Ju Seo, Tae-Kwang Um, Jae-Yong Lee, Jin-Ho Choi, Da-Som Lee, Jae-Yung Yeo
  • Patent number: 11581592
    Abstract: Disclosed herein is a battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case including a layer structure and a gas adsorption layer formed on the inner surface of the layer structure, the gas adsorption layer including a gas adsorption material layer configured to adsorb a reaction gas that may be generated within the battery case during abnormal functioning of the electrode assembly, and a blocking layer formed on an exposed surface of the gas adsorption material layer, the blocking layer configured to prevent the gas adsorption material layer from being exposed to an ambient gas during assembly of the battery case.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: February 14, 2023
    Inventors: Hee Seok Jeong, Eun Ju Lee, Hyun Min Kim, Jong Hwan Choi
  • Patent number: 11578864
    Abstract: Disclosed herein is a method of automatically cleaning boiler pipes. The provision of a pipe-cleaning tank on one side of a casing to store a cleaning solution therein and a tank supply valve in the pipe-cleaning tank allows the cleaning solution stored in the pipe-cleaning tank to automatically flow into a heat exchanger and various pipes inside the casing by means of only a simple operation of manipulating the tank supply valve, thereby making it easy to eliminate scale that has accumulated in the heat exchanger and the pipes.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: February 14, 2023
    Inventor: Young-Hwan Choi
  • Patent number: 11579765
    Abstract: Provided is an olfactory data sharing terminal including a receiver configured to receive olfactory data obtained by sensing an odor of an object through an olfactory sensor; a preference determiner configured to determine whether a user prefers the received olfactory data, based on a user olfactory function fuser(x); and a display displaying a user preference for the received olfactory data.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: February 14, 2023
    Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae Eun Jang, Hyuk Jun Kwon, Che Il Moon, Kyung In Jang, Ji Hwan Choi, Han Kyoung Choe, Su Jin Heo
  • Publication number: 20230044436
    Abstract: One embodiment of the disclosure relates to a vehicle radar device and a method for controlling the same. According to the present embodiments, a vehicle radar device may comprise an antenna unit including Nt transmission antennas and Nr reception antennas, wherein Nt is a natural number equal to or larger than 1, and Nr is a natural number equal to or larger than 2, a transceiver controlling the transmission antenna to transmit a transmission signal and the reception antenna to receive a reception signal reflected by a target, a signal processor detecting one or more peak signals for the target and separately detecting Nt*Nr channel reception signals corresponding to each peak signal, a target angle estimator calculating a target angle estimate from k channel reception signals selected from among the Nt*Nr channel reception signals, and a target size information estimator calculating size information about the target based on up to NV*NrCk target angle estimates calculated by the target angle estimator.
    Type: Application
    Filed: July 24, 2022
    Publication date: February 9, 2023
    Inventors: Han Byul LEE, Jung Hwan Choi, Jingu Lee, Tae Hyeong Ha, Jae Hyun Han
  • Patent number: 11570915
    Abstract: A display device includes a display module extending in a first direction, a supporting portion disposed under the display module and which supports a part of the display module, a first driving part connected to a first end of the display module to roll and unroll the display module, a connecting portion connected to a second end of the display module, and a second driving part connected to the connecting portion to roll and unroll the connecting portion. The second driving part unrolls the connecting portion when the first driving part rolls the display module, and the second driving part rolls the connecting portion when the first driving part unrolls the display module.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: January 31, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeongho Kim, Hyungsik Kim, Dongwon Choi, Jin Hwan Choi, Hayk Khachatryan