Patents by Inventor Dong-hyuk Choi

Dong-hyuk 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: 20240149819
    Abstract: The present disclosure relates to an interior material for a vehicle and a method for molding the interior material for the vehicle, and more specifically the method for molding an interior material for a vehicle according to the present disclosure includes heating a skin inserted into an upper end heater and a lower end heater spaced apart from each other; preforming the heated skin using an upper mold having a mold temperature set to have a set shape and a lower mold having a second mold temperature; and pressing the preformed skin and a core using a 1-1 mold and a 1-2 mold having set mold temperatures.
    Type: Application
    Filed: January 16, 2024
    Publication date: May 9, 2024
    Applicants: HYUNDAI MOTOR COMPANY, Kia Corporation, KBI Dongkook Ind. Co., Ltd.
    Inventors: Jae Hyun An, In Soo Han, Woo Hyun Lim, Kyu Ha Yoo, Dong II Son, Dong Hyuk Choi, Chang Woo Kang, Chang Bok Park, Wan Gyu Choi
  • Publication number: 20240130232
    Abstract: The present specification relates to a heterocyclic compound, an organic light emitting device, and a composition for an organic material layer of an organic light emitting device.
    Type: Application
    Filed: July 25, 2023
    Publication date: April 18, 2024
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Hyun-Joo LEE, Geon-Yu PARK, Young-Seok NO, Dong-Jun KIM, Dae-Hyuk CHOI
  • Publication number: 20240120584
    Abstract: A secondary battery includes: a can having an accommodation space therein; an electrode assembly accommodated in the accommodation space in the can; and a cap assembly sealed with the can. The can has a beading part recessed into a side wall of the can at a region below where the cap assembly is accommodated, and the beading part has an acute angle with respect to the side wall of the can.
    Type: Application
    Filed: October 11, 2023
    Publication date: April 11, 2024
    Inventors: Jun Ho YANG, Woo Hyuk CHOI, Tae Yoon LEE, Jun Hwan KWON, Joung Ku KIM, Hyun Suk PARK, Dong Sub LEE
  • Publication number: 20240092776
    Abstract: Disclosed (or Provided) are a heterocyclic compound and an organic light emitting device including the same.
    Type: Application
    Filed: June 22, 2023
    Publication date: March 21, 2024
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Hyung-Jin LEE, Won-Jang JEONG, Dong-Jun KIM, Dae-Hyuk CHOI
  • Patent number: 11929497
    Abstract: A negative electrode active material as well as a method of preparing a negative electrode active material which includes preparing a silicon-based compound including SiOx, wherein 0.5<x<1.3; disposing a polymer layer including a polymer compound on the silicon-based compound; disposing a metal catalyst layer on the polymer layer; heat treating the silicon-based compound on which the polymer layer and the metal catalyst layer are disposed; and removing the metal catalyst layer, wherein the polymer compound includes any one selected from the group consisting of glucose, fructose, galactose, maltose, lactose, sucrose, a phenolic resin, a naphthalene resin, a polyvinyl alcohol resin, a urethane resin, polyimide, a furan resin, a cellulose resin, an epoxy resin, a polystyrene resin, a resorcinol-based resin, a phloroglucinol-based resin, a coal-derived pitch, a petroleum-derived pitch, a tar and a mixture of two or more thereof.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: March 12, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Dong Hyuk Kim, Eun Kyung Kim, Yong Ju Lee, Rae Hwan Jo, Jung Hyun Choi
  • Patent number: 11928251
    Abstract: Disclosed is a method comprising the steps of: receiving an input of content motion data included in VR content; transmitting, to a motion device, motion control data corresponding to the input content motion data to control movement of the motion device; receiving, from a predetermined sensing apparatus, motion detection data corresponding to a movement state of the motion device; selecting a motion sickness-causing section by using a difference between the motion control data and the motion detection data; generating final motion control data according to a preset algorithm such that the level of motion sickness in the selected motion sickness-causing section is minimized during a preset content reproduction section, and storing the generated final motion control data; and when 3D VR content is reproduced, transmitting, to the motion device, the final motion control data stored in the previous step so as to control the movement of the motion device.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: March 12, 2024
    Assignee: 3D INTERACTIVE CO., LTD.
    Inventors: Dong-Hyuk Kim, Bok-Dong Choi, Jong-Deok Lee
  • Patent number: 11925051
    Abstract: A display device includes: a first base having a display area; light-emitting elements on the first base; and an encapsulation layer over the light-emitting elements. The encapsulation layer includes: a first inorganic layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer. The first inorganic layer includes: a first buffer layer on the light-emitting elements; a first barrier layer on the first buffer layer; a first porous layer on the first barrier layer; a second barrier layer on the first porous layer; and a second buffer layer on the second barrier layer. A refractive index of the first buffer layer, the first barrier layer, and the first porous layer are different from one another, and the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the first barrier layer.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: March 5, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Tack Kim, Eung Seok Park, Jae Hyuk Lee, Yoon Hyeung Cho, Dong Uk Choi
  • Patent number: 11904786
    Abstract: The present disclosure relates to an interior material for a vehicle and a method for molding the interior material for the vehicle, and more specifically the method for molding an interior material for a vehicle according to the present disclosure includes heating a skin inserted into an upper end heater and a lower end heater spaced apart from each other; preforming the heated skin using an upper mold having a mold temperature set to have a set shape and a lower mold having a second mold temperature; and pressing the preformed skin and a core using a 1-1 mold and a 1-2 mold having set mold temperatures.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: February 20, 2024
    Assignees: Hyundai Motor Company, Kia Corporation, KBI DONGKOOK IND. CO., LTD.
    Inventors: Jae Hyun An, In Soo Han, Woo Hyun Lim, Kyu Ha Yoo, Dong Il Son, Dong Hyuk Choi, Chang Woo Kang, Chang Bok Park, Wan Gyu Choi
  • Publication number: 20230392110
    Abstract: The present invention relates to antagonist microorganisms for inhibiting fire blight and a composition for preventing or inhibiting fire blight comprising the same as an active ingredient, and provides antagonist microorganisms exhibiting excellent antagonistic ability against a causative bacterium, Erwinia amylovora. According to the present invention, the antagonist microorganisms for inhibiting fire blight isolated in Korea are provided to replace a biological control agent for inhibiting fire blight, which requires enormous costs depending on imports.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 7, 2023
    Applicant: KNU-INDUSTRY COOPERATION FOUNDATION
    Inventors: Duck Hwan PARK, Dong Hyuk CHOI, Hyun Ju CHOI, Yeon Ju KIM, Yeon Jeong LIM, In Gyeong LEE
  • Publication number: 20230373153
    Abstract: In an embodiment, a rotatable mold apparatus includes a first mold disposed on a first base structure to be integrally moved together with the first base structure, a second mold disposed on a second base structure to be integrally moved together with the second base structure in order to couple to or decoupled from the first mold, a drive device configured to rotate the first mold and the second mold together when the first mold and the second mold are coupled to each other and support devices rotatably supporting the first mold and the second mold on the first base structure and the second base structure, respectively.
    Type: Application
    Filed: December 1, 2022
    Publication date: November 23, 2023
    Inventors: Woo Hyoung Cho, Jung Joon Park, Kyu Ha Yoo, Kie Moon Sung, Man Jae Weon, Young Min Park, Dong IL Son, Dong Hyuk Choi, Chang Woo Kang, Young Chan Cho, Young Jin You
  • Publication number: 20220203919
    Abstract: The present disclosure relates to an interior material for a vehicle and a method for molding the interior material for the vehicle, and more specifically the method for molding an interior material for a vehicle according to the present disclosure includes heating a skin inserted into an upper end heater and a lower end heater spaced apart from each other; preforming the heated skin using an upper mold having a mold temperature set to have a set shape and a lower mold having a second mold temperature; and pressing the preformed skin and a core using a 1-1 mold and a 1-2 mold having set mold temperatures.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 30, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, KBI Dongkook Ind. Co., Ltd.
    Inventors: Jae Hyun An, In Soo Han, Woo Hyun Lim, Kyu Ha Yoo, Dong Il Son, Dong Hyuk Choi, Chang Woo Kang, Chang Bok Park, Wan Gyu Choi
  • Patent number: 11105230
    Abstract: An compression-release engine brake opens an exhaust valve at an end of a compression stroke for performing braking function. The compression-release engine brake includes: an exhaust cam including a main cam lobe and a brake cam lobe, an exhaust rocker arm including a roller mounted on one end of the exhaust rocker arm contacting or not contacting the exhaust cam and rotating around a rocker arm shaft by rotation of the exhaust cam, a valve bridge disposed at the other end of the exhaust rocker arm and connected with a pair of exhaust valves, and a reset module disposed between the exhaust rocker arm and valve bridge, contacting the roller with the brake cam lobe according to being suppled of engine brake oil, and exhausting the engine brake oil after opening the exhaust valve by rotation of the exhaust cam.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: August 31, 2021
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Kyung Ryull Kim, Dong Hyuk Choi
  • Patent number: 11047271
    Abstract: A compression release type of engine brake socket module is provided between an exhaust rocker arm rotating with respect to a rocker arm shaft and a valve bridge connecting an exhaust valve of an engine. In particular the socket module incudes: a housing which includes an inlet through which brake oil is introduced, a brake piston mounting portion, and a reset member mounting portion communicating with the brake piston mounting portion; a brake piston that is provided to be movable in the brake piston mounting portion; a stopper disposed on one side of an inner space of the housing to limit a moving position of the brake piston; and a reset member that is provided in the reset member mounting portion, and that discharges the brake oil by selectively contacting a push pin coupled to an upper portion of a cylinder head.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 29, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Hee Jeon, Dong Hyuk Choi
  • Publication number: 20210102482
    Abstract: A compression release type of engine brake socket module is provided between an exhaust rocker arm rotating with respect to a rocker arm shaft and a valve bridge connecting an exhaust valve of an engine. In particular the socket module incudes: a housing which includes an inlet through which brake oil is introduced, a brake piston mounting portion, and a reset member mounting portion communicating with the brake piston mounting portion; a brake piston that is provided to be movable in the brake piston mounting portion; a stopper disposed on one side of an inner space of the housing to limit a moving position of the brake piston; and a reset member that is provided in the reset member mounting portion, and that discharges the brake oil by selectively contacting a push pin coupled to an upper portion of a cylinder head.
    Type: Application
    Filed: July 10, 2020
    Publication date: April 8, 2021
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Hee JEON, Dong Hyuk CHOI
  • Publication number: 20210095583
    Abstract: An compression-release engine brake opens an exhaust valve at an end of a compression stroke for performing braking function. The compression-release engine brake includes: an exhaust cam including a main cam lobe and a brake cam lobe, an exhaust rocker arm including a roller mounted on one end of the exhaust rocker arm contacting or not contacting the exhaust cam and rotating around a rocker arm shaft by rotation of the exhaust cam, a valve bridge disposed at the other end of the exhaust rocker arm and connected with a pair of exhaust valves, and a reset module disposed between the exhaust rocker arm and valve bridge, contacting the roller with the brake cam lobe according to being suppled of engine brake oil, and exhausting the engine brake oil after opening the exhaust valve by rotation of the exhaust cam.
    Type: Application
    Filed: July 10, 2020
    Publication date: April 1, 2021
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Kyung Ryull KIM, Dong Hyuk CHOI
  • Patent number: 10301985
    Abstract: Disclosed is a lubricating apparatus including an oil supply pipe connected to a gearbox of a gearing device for transmitting turning force of a blowdown turbine in the turbo compound system to a crankshaft to supply oil into the gearbox, a first oil supply opening formed to be transpierced at the bearing housing of a first bearing rotatably supporting a shaft of an output gear for outputting turning force in the turbo compound system to supply oil supplied from the gearbox to the first bearing, a sub-supply pipe connected to a gear case in which the output gear is embedded to supply oil to the gear case, and a second oil supply opening formed to be transpierced at the bearing housing of a second bearing rotatably supporting the shaft of the output gear to supply oil supplied through the sub-supply pipe to the second bearing.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: May 28, 2019
    Assignee: Hyundai Motor Company
    Inventor: Dong Hyuk Choi
  • Publication number: 20180058311
    Abstract: A turbo compound system may include a blowdown turbine disposed at an exhaust gas outlet of a turbocharger turbine, a driveline connecting the blowdown turbine to the crankshaft of the engine to transmit power, an exhaust gas distributor disposed between the turbocharger turbine, a motor auxiliary device connected to the driveline to transmit power, the motor auxiliary device generating rotational force and transmitting the rotational force to a crankshaft of the engine through the driveline to assist output of the engine, and a controller controlling operation of the exhaust gas distributor and the motor auxiliary device.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 1, 2018
    Applicant: Hyundai Motor Company
    Inventor: Dong Hyuk CHOI
  • Publication number: 20180058279
    Abstract: Disclosed is a lubricating apparatus including an oil supply pipe connected to a gearbox of a gearing device for transmitting turning force of a blowdown turbine in the turbo compound system to a crankshaft to supply oil into the gearbox, a first oil supply opening formed to be transpierced at the bearing housing of a first bearing rotatably supporting a shaft of an output gear for outputting turning force in the turbo compound system to supply oil supplied from the gearbox to the first bearing, a sub-supply pipe connected to a gear case in which the output gear is embedded to supply oil to the gear case, and a second oil supply opening formed to be transpierced at the bearing housing of a second bearing rotatably supporting the shaft of the output gear to supply oil supplied through the sub-supply pipe to the second bearing.
    Type: Application
    Filed: December 9, 2016
    Publication date: March 1, 2018
    Applicant: Hyundai Motor Company
    Inventor: Dong Hyuk CHOI
  • Patent number: 7643774
    Abstract: A roller spacing apparatus and an image forming device including the same. The roller spacing apparatus includes a frame, a first rotatable roller member having a first shaft, a second rotatable roller member having a second shaft and being rotatable in a close contact with the first roller member under a predetermined pressure, and at least one spacing part to space apart the first and the second roller members from each other by a predetermined gap such that the first and the second roller members are not in contact with each other when the first and the second roller members are not in use.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: January 5, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-hyuk Choi
  • Patent number: 7570901
    Abstract: A roller spacing apparatus and an image forming device including the same. The roller spacing apparatus includes a first roller member that is rotatable, a second roller member that is rotatable in a close contact with the first roller member under a predetermined pressure, and at least one spacing part to space apart the first and the second roller members from each other by a predetermined gap such that the first and the second roller members are not in contact with each other when the first and the second roller members are not in use. The spacing part includes a bushing member that has a bushing to rotatably support a shaft of at least one of the first and the second roller members and a lever disposed at the bushing to rotate the bushing, the bushing having an inner diameter part to support the shaft and an outer diameter part, the inner and outer diameter parts being non-concentric circles, and a stopping member to restrict an operation range of the lever.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: August 4, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Dong-hyuk Choi