Patents by Inventor Keun Yoo

Keun Yoo 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: 20240136970
    Abstract: An energy harvesting system and an indicator using same are disclosed. The disclosed indicator using an energy harvester comprises: an energy harvesting unit including at least one solar cell; a panel unit, which is arranged to face the energy harvesting unit, transmits sunlight and displays guide information; and a light-emitting unit for emitting light at the side surface of the panel unit.
    Type: Application
    Filed: January 26, 2022
    Publication date: April 25, 2024
    Inventors: Moses SUNG, Won Keun YOO
  • Patent number: 11967705
    Abstract: An anode active material for a lithium secondary battery includes a carbon-based particle including pores therein, a silicon-containing coating layer formed at an inside the pores of the carbon-based particle or on a surface of the carbon-based particle, and a carbon coating layer formed on the silicon-containing coating layer. A full width at half maximum (FWHM) of an O1s peak of a surface measured by an X-ray photoelectron spectroscopy (XPS) is 2.0 or more. A lithium secondary battery including the anode active material having improved initial discharge capacity and capacity efficiency is provided.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: April 23, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Gwi Ok Park, Seok Keun Yoo, Dong Il Jang, Ju Ho Chung
  • Publication number: 20240128443
    Abstract: A silicon-carbon containing electrode material includes a porous carbon structure including pores, and a silicon-containing coating formed on the porous carbon structure. A volume ratio of mesopores is 70% or more based on a total pore volume of the porous carbon structure. A weight ratio of silicon is 30 wt % or more based on a total weight of the electrode material. A high-capacity secondary battery is effectively implemented by using silicon-carbon containing electrode material.
    Type: Application
    Filed: September 21, 2023
    Publication date: April 18, 2024
    Inventors: Hee Soo KIM, Yeon Ho KIM, Young Kwang KIM, Young Eun CHEON, Gwi Ok PARK, Seok Keun YOO
  • Patent number: 11945296
    Abstract: The present invention relates to a cooling module for a vehicle, and more particularly, to a cooling module for a vehicle including a condenser, a first radiator through which coolant for an engine flow, a second radiator through which coolant for electrical components flows, and an intercooler, and capable of evenly distributing air resistance of the front surface of the first radiator to secure an overall balance of an air volume distribution by disposing the condenser, the second radiator, and the first radiator in a flow direction of air or disposing the second radiator, the condenser, and the first radiator in this order, and disposing the intercooler on lower sides of the condenser and the second radiator, and capable of minimizing a gap of each heat exchange period by disposing the condenser C and the first radiator R to be in closely contact with the second radiator L.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: April 2, 2024
    Assignee: Hanon Systems
    Inventors: Ji Hun Han, Gwang Ok Ko, Hyun Keun Shin, Seok Jong Yoo
  • Publication number: 20240099130
    Abstract: The present invention provides an organic compound represented by: an organic light emitting diode and an organic light emitting display device using the organic compound. The organic compound of the present invention is capable of reducing a driving voltage of an organic light emitting diode and improving an emitting efficiency and a lifetime of the organic light emitting diode and the organic light emitting display device including the organic compound.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 21, 2024
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Seung-Hee YOON, Sung-Hoon JOO, Seon-Keun YOO, Ji-Cheol SHIN
  • Publication number: 20240088389
    Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 14, 2024
    Inventors: Gwi Ok PARK, Seok Keun YOO, Ju Ho CHUNG
  • Patent number: 11920856
    Abstract: A refrigerator includes a storage chamber having an opening; a drawer type door to open or close the opening; a display positioned at the drawer type door; a first connector provided at a sidewall of the storage chamber; a second connector provided at the drawer type door and being electrically connected to the display; a first frame coupled to an inner wall of the storage chamber, the first frame to cover the first connector; a second frame coupled to the drawer type door, the second frame to support a storage box; and a wire electrically connected between the first connector and the second connector. The first frame has a first accommodating part to accommodate one portion of the wire and the second frame has a second accommodating part to accommodate another portion of the wire.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Myung Han, Jae Hoon Lim, Gi Joong Jeong, Woo Yeol Yoo, Jong Eun Chae, Sun keun Lee
  • Patent number: 11889754
    Abstract: The present disclosure provides an organic compound of the following formula and an organic light emitting diode and an OLED device including the same.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: January 30, 2024
    Assignees: LG DISPLAY CO., LTD, P & HTECH
    Inventors: Ji-Cheol Shin, Seon-Keun Yoo, Jeong-Dae Seo, Sang-Beom Kim, Hee-Jun Park, Seo-Yong Hyun, Seok-Keun Yoon
  • Publication number: 20240019611
    Abstract: In a focus variable liquid lens and a method of manufacturing the focus variable liquid lens includes a base substrate, an electrode par and a lens unit. The electrode part is formed on the base substrate, having a central electrode and a plurality of electrodes. A printed circuit board is mounted to be electrically connected to the metal layer exposed to outside through the insulating layer. The lens unit has a liquid lens formed at the central electrode, and a light passes through the liquid lens. The liquid lens is located at a center of the central electrode and a focus of the light is located at an optical axis, when a voltage having the same magnitude is applied to the plurality of the electrodes. The liquid lens moves laterally from the central electrode and the focus of the light moves laterally from the center of the central electrode.
    Type: Application
    Filed: March 23, 2022
    Publication date: January 18, 2024
    Applicant: OSONG MEDICAL INNOVATION FOUNDATION
    Inventors: Seung Wan SEO, Sung Keun YOO
  • Patent number: 11862800
    Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: January 2, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Gwi Ok Park, Seok Keun Yoo, Ju Ho Chung
  • Patent number: 11856846
    Abstract: An example of the present invention provides an organic compound represented by: an organic light emitting diode and an organic light emitting display device using the organic compound. The organic compound of the present invention is capable of reducing a driving voltage of an organic light emitting diode and improving an emitting efficiency and a lifetime of the organic light emitting diode and the organic light emitting display device including the organic compound.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: December 26, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seung-Hee Yoon, Sung-Hoon Joo, Seon-Keun Yoo, Ji-Cheol Shin
  • Publication number: 20230409092
    Abstract: An electronic device is provided. The electronic device includes two housing structures, a hinge structure, and a flexible display, the hinge structure includes a first saw-toothed spur gear, a second saw-toothed spur gear, a third saw-toothed spur gear, a fourth saw-toothed spur gear, a first guide structure fixed to the first housing structure and rotated by the gears, and a second guide structure fixed to the second housing structure and rotated in an opposite direction of the first guide structure, the first guide structure is rotated about a first axis formed from a bottom surface of the flexible display upwards, and the second guide structure is rotated about a second axis that is spaced apart from the first axis and is formed from the bottom surface of the flexible display.
    Type: Application
    Filed: July 25, 2023
    Publication date: December 21, 2023
    Inventors: Jong Yoon KIM, Jung Jin KIM, Young Sun PARK, Chung Keun YOO
  • Patent number: 11837376
    Abstract: A method for producing a composite conductive material having excellent dispersibility is provided. The method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: December 5, 2023
    Inventors: Tea Gon Kim, Je Young Kim, Hak Yoon Kim, Ki Won Sung, Ye Lin Kim, Joo Yul Baek, Jung Keun Yoo, Jun Muk Lim, Seul Ki Kim
  • Publication number: 20230378445
    Abstract: An anode active material and a secondary battery including the anode active material are disclosed. In an implementation, an anode active material for a secondary battery includes a plurality of composite active material particles, each composite active material particle containing a first active material that includes silicon and a second active material that includes carbon, and a carbon coating covering at least a portion of a surface of at least one of the plurality of composite active material particles. The anode active material has a volume-based particle size distribution represented as a ratio D10/D50 ranging from 0.40 to 0.75 and a ratio Dmin/D50 ranging from 0.3 to 1, wherein D10 indicates a particle diameter corresponding to a volume fraction of 10%, D50 indicates a particle diameter corresponding to a volume fraction of 50%, and Dmin indicates a minimum particle diameter.
    Type: Application
    Filed: May 16, 2023
    Publication date: November 23, 2023
    Inventors: Seok Keun YOO, Gwi Ok PARK, Ju Ho CHUNG
  • Publication number: 20230282812
    Abstract: An anode active material for a secondary battery according to an embodiment of the present invention includes a carbon-based particle containing pores, a silicon-containing coating layer formed at an inside of the pores or on a surface of the carbon-based particle, and a carbon coating formed on the silicon-containing coating layer. A ratio of a peak intensity (ID) of a D band relative to a peak intensity (IG) of a G band in a Raman spectrum of the carbon coating is 1.65 or less.
    Type: Application
    Filed: March 3, 2023
    Publication date: September 7, 2023
    Inventors: Seok Keun YOO, Gwi Ok PARK, Ju Ho CHUNG
  • Patent number: 11747867
    Abstract: An electronic device is provided. The electronic device includes two housing structures, a hinge structure, and a flexible display, the hinge structure includes a first saw-toothed spur gear, a second saw-toothed spur gear, a third saw-toothed spur gear, a fourth saw-toothed spur gear, a first guide structure fixed to the first housing structure and rotated by the gears, and a second guide structure fixed to the second housing structure and rotated in an opposite direction of the first guide structure, the first guide structure is rotated about a first axis formed from a bottom surface of the flexible display upwards, and the second guide structure is rotated about a second axis that is spaced apart from the first axis and is formed from the bottom surface of the flexible display.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: September 5, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Yoon Kim, Jung Jin Kim, Young Sun Park, Chung Keun Yoo
  • Publication number: 20230276705
    Abstract: Embodiments of the present invention provide an organic light emitting diode and an organic light emitting display device including the organic compound. The organic compound is capable of reducing a driving voltage of an organic light emitting diode and improves a current efficiency and a lifetime of the organic light emitting diode and the organic light emitting display device including the same.
    Type: Application
    Filed: May 9, 2023
    Publication date: August 31, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Seon-Keun YOO, Sung-Hoon JOO, Seung-Hee YOON, Ji-Cheol SHIN
  • Patent number: 11729998
    Abstract: An electronic device including a semiconductor memory is provided. The semiconductor memory includes: a substrate having a substantially horizontal upper surface; first to Nth layers (where N is a natural number of two or more) disposed in horizontal layers on the substrate and spaced apart from each other above the substrate in a vertical direction, wherein each of the first to Nth layers includes a plurality of conductive lines; an insulating layer disposed to fill spaces between the conductive lines; a hole having sidewalls that extends in the vertical direction through the conductive lines of the first to Nth layers and the insulating layer therebetween; a variable resistance layer disposed on the sidewalls of the hole; and a conductive pillar disposed to fill the hole in which the variable resistance layer is formed.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: August 15, 2023
    Assignee: SK hynix Inc.
    Inventors: Jae-Hyun Han, Hyang-Keun Yoo, Se-Ho Lee
  • Patent number: 11702032
    Abstract: A vehicular belt tactile apparatus is provided. The apparatus includes a buckle, a belt configured to be fastened to the buckle and at least one air pouch disposed at a portion of the belt that contacts the body of an occupant when the belt is fastened to the buckle. An air controller generates a control signal when the belt is fastened to the buckle. The buckle includes an air supply unit that is configured to inject air into the at least one air pouch through the belt or to discharge air from the at least one air pouch in response to the control signal.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: July 18, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Jin Mo Lee, Jung Keun Yoo, Joong Kwan Kim, Kaang Dok Yee
  • Patent number: RE49754
    Abstract: A movement structure for a drawer of a refrigerator is provided that allows a storage box to be automatically withdrawn from or inserted into a main body of the refrigerator. The structure may include a rolling mechanism that rolls along a guide mechanism coupled to the storage box to facilitate and guide the movement of the storage box and maintain alignment relative to the main body of the refrigerator. A drive motor may provide a rotational force to the rolling mechanism to automate the movement of the storage box.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: December 12, 2023
    Assignee: LG Electronics Inc.
    Inventors: Myung Keun Yoo, Yong Hwan Eom, Ok Sun Yu, Hyoun Jeong Shin