Patents by Inventor Hoon Choi

Hoon 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: 20230139032
    Abstract: The present disclosure relates to three different types of host materials, and an organic electroluminescent device comprising the same, and it is possible to provide an organic electroluminescent device having higher luminous efficiency and/or improved lifetime properties compared to a conventional organic electroluminescent device.
    Type: Application
    Filed: August 18, 2022
    Publication date: May 4, 2023
    Inventors: Sang-Hee CHO, Young-Jae Kim, HaeYeon Kim, Young-Jun Cho, Kyung-Hoon Choi, So-Young Jung, Su-Hyun Lee, Mi-Ja Lee
  • Publication number: 20230140800
    Abstract: Provided is a slot die coater capable of uniformly forming a coating boundary formed in a machine direction (MD). The slot die coater includes at least two die blocks; a shim plate provided between the two die blocks to form a slot; and a manifold provided in the die block and configured to accommodate a coating solution, wherein the coating solution is discharged and applied to a substrate through a discharge port communicatively connected with the slot an end of the shim plate is moved backward relative to a die lip which is a front end of the die block so as to be offset relative to the die lip.
    Type: Application
    Filed: October 27, 2021
    Publication date: May 4, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Taek-Soo Lee, Shin-Wook Jeon, Jin-Ho Cho, Sang-Hoon Choy
  • Publication number: 20230140591
    Abstract: A window includes a folding portion foldable with respect to an imaginary folding axis extending in a first direction, a first non-folding portion, and a second non-folding portion spaced apart from the first non-folding portion in a second direction perpendicular to the first direction with the folding portion interposed therebetween. The folding portion includes a base portion and a plurality of protrusion portions disposed on the base portion and spaced apart from each other in the second direction. A width, in the first direction, of the folding portion is smaller than a width, in the first direction, of each of the first non-folding portion and the second non-folding portion.
    Type: Application
    Filed: August 16, 2022
    Publication date: May 4, 2023
    Inventors: SEONGJIN HWANG, KYUNG-MAN KIM, DAWOON KIM, SANGHOON KIM, SUNGHOON KIM, SEUNGHO KIM, YURI KIM, MIN-HOON CHOI
  • Publication number: 20230136243
    Abstract: There is provided a multi-slot die coater including a manifold for a uniform flow of an electrode active material slurry without stagnation. The multi-slot die coater of the present disclosure includes a first manifold in which a first coating solution is received and a second manifold in which a second coating solution is received. The first manifold is a chamber of an inwardly recessed shape, and includes a first surface and a second surface having different angles to a lower slot at a location close to the lower slot, and the angle of the first surface closest to the lower slot is formed at a level of 30˜70% of the second surface following the first surface.
    Type: Application
    Filed: August 25, 2021
    Publication date: May 4, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Taek-Soo Lee, Shin-Wook Jeon, Sang-Hoon Choy
  • Patent number: 11639702
    Abstract: Disclosed is a fuel evaporation gas treatment system for a vehicle, which includes a sub-purge system configured such that a fuel evaporation gas adsorbed in a canister is recovered into a fuel tank, the sub-purge system including a recovery port formed in the canister, a recovery line connected to the recovery port, an ejector provided to receive fuel delivered by a fuel pump, to suck the fuel evaporation gas from the canister through the recovery line and the recovery port upon generation of negative pressure, and to discharge the fuel evaporation gas to the fuel tank, a driving fluid hose connecting the discharge port of the fuel pump to the driving inlet of the ejector to supply the fuel to the ejector, and a recovery control valve for opening and closing a fuel passage so that the fuel is selectively supplied to the ejector.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: May 2, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Chang Han Kim, Jun Sik Lim, Seung Hoon Choi, Gil Eon Kang
  • Publication number: 20230127571
    Abstract: A dual slot die coater including a lower plate, an intermediate plate positioned on the lower plate and an upper plate positioned on the intermediate plate, a lower slot being formed between the lower plate and the intermediate plate, and an upper slot being formed between the intermediate plate and the upper plate. The lower plate, the intermediate plate and the upper plate have a lower die lip, an intermediate die lip and an upper die lip, each forming an front end with respect to the current collector, respectively, and a distance between the current collector and the lower die lip is larger than a distance between the current collector and the upper die lip and a distance between the current collector and the intermediate die lip.
    Type: Application
    Filed: September 17, 2021
    Publication date: April 27, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Taek-Soo Lee, Young-Gon Kim, Young-Joon Jo, Shin-Wook Jeon, Jin-Ho Cho, Sang-Hoon Choy
  • Publication number: 20230128999
    Abstract: A system for drying an electrode includes a drying unit which dries an electrode which is moving on a transfer line; a thermal imaging camera which photographs a surface of the electrode in real time; a calculation unit which stores an image taken by the thermal imaging camera, and generates temperature distribution data in a width direction of the electrode from the image; and an output unit which outputs the image and the temperature distribution data in a width direction of the electrode.
    Type: Application
    Filed: November 17, 2021
    Publication date: April 27, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Eun Hoe Jeong, Sang Hoon Choy, Shin Wook Jeon, Oh Cheol Kwon, Jin Young Son, Young Kuk Ko
  • Publication number: 20230127081
    Abstract: Provided is a slot die coater with a uniform flow of coating solution without stagnation. The slot die coater includes at least two die blocks; a shim plate provided between the two die blocks to form a slot; and a manifold provided in the die block and communicatively connected with the slot as a chamber in the shape of indention accommodating a coating solution, wherein the coating solution is discharged and applied to a surface of a continuously traveling substrate through a discharge port communicatively connected with the slot, and a region of the die block from a front end of the manifold to a die lip which is a front end of the die block is a land, and a ratio A/B of a land length A to a manifold length B is in a range of 0.5 to 3.55.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 27, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Taek-Soo Lee, Young-Gon Kim, Shin-Wook Jeon, Young-Joon Jo, Sang-Hoon Choy
  • Patent number: 11637274
    Abstract: The present disclosure relates to a strip-like electrode for use in a cylindrical jelly roll which includes a strip-like electrode assembly wound cylindrically to form a hollow cavity at the core portion thereof, and a lithium secondary battery including the same. The strip-like electrode includes: a strip-like electrode current collector; a first electrode active material layer formed on at least one surface of the strip-like electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to have a length smaller than the length of the first electrode active material layer so that a part of one longitudinal surface of the first electrode active material layer can be exposed to the outside.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: April 25, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Byoung-Hoon Ahn, Jung-Min Yang, Sang-Hoon Choy
  • Patent number: 11637279
    Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: April 25, 2023
    Assignee: SK ON CO., LTD.
    Inventors: Sang Bok Kim, Sang Hye Shin, Sang Min Park, Tae Kyoung Lee, Myoung Lae Kim, Jeong Bae Yoon, Jik Soo Kim, Ji Hoon Choi
  • Patent number: 11634825
    Abstract: An alkaline water electrolysis system includes: a plurality of reaction chambers, each including a main electrode and an auxiliary electrode; a piston provided in each reaction chamber to change a volume of the reaction chamber through reciprocating motion; a drive motor; a connecting rod and a crankshaft installed to change rotational motion of the drive motor into reciprocating linear motion of the piston; a plurality of gas valves installed on an upper side of the reaction chamber to discharge hydrogen and oxygen generated in the reaction chamber through different paths, respectively; a pressure sensor installed in the reaction chamber; a controller configured to open and close the gas valves in response to a signal received from the pressure sensor; and an electrolyte supply apparatus provided to supply an electrolyte to the reaction chambers.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: April 25, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Hoon Choi
  • Patent number: 11637605
    Abstract: A method, provided by the present disclosure, of transmitting a reference signal by a base station in a wireless communication system using a plurality of antenna ports including mapping wireless resources, for transmitting a reference signal, to a plurality of antenna ports for transmitting the reference signal; and using the wireless resources and transmitting the reference signal to a terminal through the mapped antenna ports. The mapping to the antenna ports is executed on the basis of a combination of a first mapping pattern between the wireless resources and the antenna ports and a second mapping pattern between the wireless resources and the antenna ports.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: April 25, 2023
    Inventors: Jin-Young Oh, Young-Woo Kwak, Seung-Hoon Choi, Dong-Han Kim, Hoon-Dong Noh, Cheol-Kyu Shin, Youn-Sun Kim, Sang-Min Ro
  • Publication number: 20230123951
    Abstract: The present invention provides: an electrode mixture manufacturing method comprising the processes of introducing a first binder, an electrode active material, and a conductive material into an extruder, performing a first mixing of the first binder, the electrode active material, and the conductive material in the extruder, additionally introducing a second binder into the extruder and performing a second mixing, and yielding an electrode mixture resulting from the first mixing and the second mixing; an electrode mixture manufactured thereby; and an electrode manufacturing method using the electrode mixture.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Ki Tae Kim, Chang Wan Koo, Sang Hoon Choy
  • Publication number: 20230120286
    Abstract: A method of manufacturing a shim for a die coater is disclosed herein. In some embodiments, a method of manufacturing a shim for a die coater, where the shim is applied to an electrode slurry die of the die coater and used for discharging an electrode slurry from the die coater, comprising milling a surface of a metal plate to prepare the shim. Using the method herein, it is possible to manufacture a shim for a die coater having a low thickness deviation by processing the shim for a die coater through a milling process.
    Type: Application
    Filed: December 1, 2021
    Publication date: April 20, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Seong Wook Hong, Dong Hun Song, Sang Hoon Choy, Shin Wook Jeon
  • Publication number: 20230124699
    Abstract: A member for a window module includes a base layer which is foldable and in which a groove defined. The base layer includes a first dam structure in which the groove is defined. The member further includes a filler filled in the groove.
    Type: Application
    Filed: July 26, 2022
    Publication date: April 20, 2023
    Inventors: SUNGHOON KIM, BYUNGHOON KANG, KYUNG-MAN KIM, SANGHOON KIM, SEUNGHO KIM, YURI KIM, MIN-HOON CHOI, SEONGJIN HWANG
  • Publication number: 20230118784
    Abstract: An electrode slurry coating system and a method of using the same to coat a current collector layer are disclosed herein. In some embodiments, the electrode slurry coating system includes a supply tank, a supply line having a control valve and branching into at least three sub-supply lines at one end thereof, an electrode slurry slot die having a manifold, a coating roller, and a temperature sensor, wherein the temperature is sensor configured to measure the temperature of the electrode slurry discharged from the electrode slurry slot die, and wherein the control valve is configured to control the flow rate of the electrode slurry in response to a temperature of the electrode slurry measured by the temperature sensor.
    Type: Application
    Filed: December 22, 2021
    Publication date: April 20, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Seong Wook Hong, Dong Hun Song, Hyun Woo Choi, Sang Hoon Choy, Shin Wook Jeon
  • Publication number: 20230117843
    Abstract: Embodiments of the present invention provide a cathode active material for a lithium secondary battery. The cathode active material for a lithium secondary battery includes lithium-transition metal composite oxide particles, and a coating formed on each of the lithium-transition metal composite oxide particles. The coating includes a lithium-sulfur compound and a metal hydroxide. A residual lithium on a surface of the cathode active material is sufficiently removed to improve an ionic conductivity and low-resistance.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 20, 2023
    Inventors: Sang Bok KIM, Sang Min PARK, Ji Hoon CHOI, Jung Moon SUNG, Sang Hye SHIN, Ji Sun LEE, Jae Young CHOI
  • Patent number: 11631857
    Abstract: A secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, the positive electrode active material layer includes a positive electrode active material and carbon nanotubes, and the electrolyte solution includes a non-aqueous solvent, a lithium salt, and tetravinylsilane.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 18, 2023
    Inventors: Joo Yul Baek, Young Min Lim, Jun Muk Lim, Sang Hoon Choy, Chul Haeng Lee
  • Publication number: 20230115826
    Abstract: A printing apparatus and a method of providing printing apparatus are provided. A printing apparatus according to at least one embodiment of the present disclosure includes a base panel or head base, at least one or more head packs installed on the head base, a head pack holder installed on each of the head packs and configured to handle and fix the head pack, and a fastening structure configured to mount the head pack holder to the head packs.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 13, 2023
    Inventors: Jang Mi WOO, Ki Hoon CHOI, Young Hoon JEONG, Myung Jin KIM
  • Publication number: 20230110449
    Abstract: A method of providing information on a social networking service (SNS) activity to a chatroom, performed by a user terminal, includes: transmitting, to a server, an SNS request for each of a plurality of anonymous profiles created to be interlinked with an account of a user for an instant messaging service (IMS); displaying information on an SNS activity performed through a first anonymous profile selected by the user in correspondence with a chatroom in which the user participates in the IMS, from among the plurality of anonymous profiles, in the chatroom; receiving an input of changing a profile of the user, selected corresponding to the chatroom, from the first anonymous profile to a second anonymous profile; and displaying information on an SNS activity performed through the second anonymous profile in the chatroom.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 13, 2023
    Inventors: Ji Sun LEE, Hyun Young PARK, Seong Mi LIM, Young Min PARK, Doo Won LEE, Eun Jung KO, Jae Lin LEE, Kwang Hui LIM, Ki Yong SHIM, Sun Ho CHOI, Kwang Hoon CHOI, Hwa Young LEE, Jae Gil LEE, Kyong Rim KIM, Soo Min CHO