Patents by Inventor Cheol Yoo

Cheol 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: 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: 20240000751
    Abstract: The present invention relates to a stable oral formulation comprising 1-(3-cyano-1-isopropyl-indol-5-yl)pyrazol-4-carboxylic acid or a pharmaceutically acceptable salt thereof as an API. The stable oral formulation according to the present invention has the characteristics of maintaining stability even if it does not comprise a stabilizer as an excipient, and does not comprise a stabilizer but has increased API content, and thus the convenience of administration can be increased.
    Type: Application
    Filed: November 30, 2021
    Publication date: January 4, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Seok Cheol YOO, Sun LEE, Duck Il YUN, Junghong PARK, Hyun Ji SUN
  • Publication number: 20230414601
    Abstract: The present invention relates to an injectable pharmaceutical composition containing a caspase inhibitor, and a preparation method therefor, and, more specifically, to an injectable pharmaceutical composition, and a preparation method therefor, the composition comprising: as an active ingredient, (R)-N-((2S,3S)-2-(fluoromethyl)-2-hydroxy-5-oxotetrahydrofuran-3-yl)-5-isopropyl-3-(isoquinolin-1-yl)-4,5-dihydroisoxazole-5-carboxamide, which is a caspase inhibitor, or a pharmaceutically acceptable salt or isomer thereof; and, as a biocompatible polymer, microspheres containing poly(lactide-co-glycolide).
    Type: Application
    Filed: November 29, 2021
    Publication date: December 28, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seok Cheol YOO, Sung Won KIM, Jung Gyu PARK, Sei Hyun CHOI, Hee Dong PARK, Jae Uk BAEK
  • Publication number: 20230420693
    Abstract: A single-atom catalyst structure comprises: a three-dimensional ordered mesoporous carbon structure; and a single-atom catalyst doped inside the three-dimensional ordered mesoporous carbon structure, wherein the single-atom catalyst may comprise transition metal, nitrogen, and carbon. In an alternative implementation, a single-atom catalyst structure comprises: a three-dimensional ordered mesoporous carbon structure; and a single-atom catalyst doped inside the three-dimensional ordered mesoporous carbon structure, wherein the single-atom catalyst includes transition metal, nitrogen, and carbon.
    Type: Application
    Filed: August 15, 2023
    Publication date: December 28, 2023
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Won Cheol Yoo, Hee Soo Kim, In Cheol Heo
  • Patent number: 11397041
    Abstract: A refrigerator and a method for controlling the same. The refrigerator includes a main body; a first storage chamber and a second storage chamber provided in the main body; a first evaporator provided in the first storage chamber, configured to generate cool air; a second evaporator provided in the second storage chamber, configured to generate the cool air; a switching valve configured to supply a refrigerant to at least one of the first evaporator or the second evaporator; and a controller configured to generate a control signal for controlling the switching valve so that the refrigerant supplied to at least one of the first evaporator or the second evaporator is distributed according to a predetermined reference, and lower the temperature of the first storage chamber and the second storage chamber to a predetermined temperature based on the generated control signal.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: July 26, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Do-Hyung Kim, Su-Cheol Yoo, Jung Woo Yoo, Kook Jeong Seo, Chang-Hern Lee, Ha-Jin Jeong
  • Patent number: 11338560
    Abstract: Provided is a functional fabric including a base fabric layer; and an insulation flexible sheet attached to at least one surface of the base fabric layer. The insulation flexible sheet includes a first flexible base; and an insulation coating layer attached to at least one surface of the base. The insulation flexible sheet may additionally include a second flexible base on the insulation coating layer. Accordingly, the functional fabric may have effective insulation properties by using silica particles having pores in a small amount used, and may have excellent strength due to the strength of the silica particles. In addition, Manufacturing methods of an insulation flexible sheet and a functional fabric are provided.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: May 24, 2022
    Assignee: SUKGYUNG AT CO., LTD.
    Inventors: Hyung Sup Lim, Young Cheol Yoo, O Sung Kwon
  • Publication number: 20220082311
    Abstract: A refrigerator includes a main body having a storage compartment formed therein, and a cooling module forming a machine compartment in which a compressor is disposed and detachably mounted to the main body. The cooling module includes a module body forming the machine compartment, a condenser of an L shape disposed on one side of the compressor and including a first part corresponding to a portion of a rear surface of the machine compartment and a second part corresponding to one side of the machine compartment. The condenser is vertically mounted on a base plate disposed below the module body. A module cover is provided to cover the rear of the machine compartment, and a suction flow path includes first and second suction flow paths.
    Type: Application
    Filed: December 18, 2019
    Publication date: March 17, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung Woo YOO, Ju Young KIM, Kook Jeong SEO, Su-Cheol YOO, Won-Jae YOON
  • Publication number: 20220018590
    Abstract: An aspect of the present disclosure is to provide a refrigerator that enables a refrigerating chamber evaporator to replace an existing accumulator and defrost heater by improving a structure of the refrigerating chamber evaporator and a control method. The refrigerator in which a compressor, a condenser, a throttle, a freezing chamber evaporator, and a refrigerating chamber evaporator are connected through a refrigerant passage to form a refrigeration cycle. The refrigerating chamber evaporator may be provided between the freezing chamber evaporator and the compressor. A straight passage of a certain length may be formed at a refrigerant inlet side of the refrigerating chamber evaporator. A curved passage having a plurality of curved sections may be formed at a refrigerant outlet side of the refrigerating chamber evaporator.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 20, 2022
    Inventors: Do-Hyung KIM, Jung Woo YOO, Su-Cheol YOO
  • Patent number: 11082094
    Abstract: An electronic device according to various exemplary embodiments may include a housing; a first antenna module configured to be disposed in a first end portion in the housing and to include a first antenna and a first amplifier circuitry to output a signal corresponding to the first antenna, a second antenna module configured to be disposed in a second end portion in the housing and to include a second antenna and a second amplifier circuitry to output a signal corresponding to the second antenna, and a transceiver configured to include a first port connected to the first antenna through the first amplifier circuitry and a second port connected to the second antenna through the second amplifier circuitry.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 3, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyang-Bok Lee, Man-Seob Kim, Tae-Lee Lee, Yong-Jun Park, Sung-Cheol Yoo, Hoon-Sang Yoo, Jung-Min Park, Byoung-Ryoul Song, Joon Heo, Jung-Hoon Park, Dong-Il Son
  • Publication number: 20210024358
    Abstract: A particle with a yolk-shell structure including a shell including carbon; and a care including silicon (Si) provided inside the shell, wherein at least a part of the shell is spaced apart from the core, and the particle with the yolk-shell structure has a micropore volume of 0.15 cm3/g or less, and a method for preparing the same.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 28, 2021
    Applicants: LG Chem, Ltd., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Jonghyun CHAE, Won Cheol YOO, Min Seo KIM, Jangbae KIM, Min Seok KANG
  • Publication number: 20200393179
    Abstract: A refrigerator and a method for controlling the same. The refrigerator includes a main body; a first storage chamber and a second storage chamber provided in the main body; a first evaporator provided in the first storage chamber, configured to generate cool air; a second evaporator provided in the second storage chamber, configured to generate the cool air; a switching valve configured to supply a refrigerant to at least one of the first evaporator or the second evaporator; and a controller configured to generate a control signal for controlling the switching valve so that the refrigerant supplied to at least one of the first evaporator or the second evaporator is distributed according to a predetermined reference, and lower the temperature of the first storage chamber and the second storage chamber to a predetermined temperature based on the generated control signal.
    Type: Application
    Filed: August 8, 2018
    Publication date: December 17, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Do-Hyung KIM, Su-Cheol YOO, Jung Woo YOO, Kook Jeong SEO, Chang-Hern LEE, Ha-Jin JEONG
  • Patent number: 10825962
    Abstract: A light emitting device can include a light emitting structure including a p-GaN based semiconductor layer, an active layer having multiple quantum wells, and an n-GaN based semiconductor layer; a p-electrode and an n-electrode electrically connecting with the light emitting structure, respectively, wherein the n-electrode has a plurality of layers; a first passivation layer including a first portion contacting a portion of the n-electrode, a second portion vertically overlapped with the p-electrode, and a third portion that extends outside of outermost side surfaces of the light emitting structure; a phosphor layer disposed on a top surface of the light emitting structure; and a second passivation layer including a first portion disposed between the phosphor layer and the top surface of the light emitting structure, and a second portion disposed on the outermost side surfaces of the light emitting structure, in which the phosphor layer includes a pattern to bond a wire with a p-pad on a portion of the p-elec
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: November 3, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Myung Cheol Yoo
  • Patent number: 10760526
    Abstract: Provided is a piston for an internal combustion engine. The piston includes a body including, at an upper part of the body, a crown including a combustion chamber where fuel is burnt and including, at a lower part of the body, a piston pin boss into which a piston pin is inserted and a skirt corresponding to a cylinder wall, and a cooling channel including a refrigerant channel, a refrigerant inlet provided at a side of the refrigerant channel, and a refrigerant outlet provided at the other side of the refrigerant channel, wherein a cross section of the cooling channel has an overall elliptic shape to reduce stress occurring at an upper side of the cooling channel when the fuel is burnt in the internal combustion engine, and at least one of arcs of the ellipse is configured as a first elliptical arc of a quadratic curve.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: September 1, 2020
    Assignee: DONG YANG PISTON CO., LTD.
    Inventors: Jun Kui Yang, Kwan Ho Ryu, Sang Hyuk Jun, Woo Seok Shim, In Cheol Yoo, Jang Ik Park
  • Patent number: 10671586
    Abstract: A system and method, including determining, by a processor, distinction bit positions for index keys of a database index; determining, by the processor, concatenation of the bits of the index keys; and generating a record of the concatenation. Other systems and methods include collecting, by a processor, index keys of a database index in parallel, wherein data pages of a target table are evenly distributed to a plurality of processor cores; scanning, by each of the cores the data pages to extract compressed keys and corresponding record identifiers; sorting, by a plurality of the processor cores, pairs of the compressed key and corresponding record identifier in accordance with a parallel sorting algorithm; generating an index tree in a bottom-up fashion; and storing a record of the generated index tree.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: June 2, 2020
    Assignee: SAP SE
    Inventors: Yong Sik Kwon, Kunsoo Park, Cheol Yoo
  • Patent number: 10644200
    Abstract: A vertical topology light emitting device can include a conductive support structure; an adhesion layer disposed on the conductive support structure; a p-type contact disposed on the adhesion layer; a GaN-based semiconductor structure disposed on the p-type contact, in which the GaN-based semiconductor structure includes an n-type GaN-based layer, a p-type GaN-based layer, and an active layer between the n-type GaN-based layer and the p-type GaN-based layer, in which the n-type GaN-based layer has an etched flat surface, and the GaN-based semiconductor structure includes a bottom surface proximate to the conductive support structure, a top surface opposite to the bottom surface, and a side surface between the top surface and the bottom surface; an interface layer on the GaN-based semiconductor structure; and a contact pad disposed on the interface layer, in which the interface layer includes a portion which directly contacts the etched flat surface of the n-type GaN-based layer, and a first thickness of the c
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: May 5, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Myung Cheol Yoo
  • Patent number: 10600933
    Abstract: A light-emitting device can include a conductive support structure comprising a metal; a GaN-based semiconductor structure disposed on the conductive support structure, the GaN-based semiconductor structure including a p-type GaN-based layer, a GaN-based active layer and an n-type GaN-based layer, in which the GaN-based semiconductor structure has a first surface, a side surface and a second surface, in which the first surface, relative to the second surface, is proximate to the conductive support structure, in which the second surface is opposite to the first surface, in which the conductive support structure is thicker than the p-type GaN-based semiconductor layer, and the conductive support structure is thicker than the n-type GaN-based semiconductor layer; a p-type electrode disposed on the conductive support structure; an n-type electrode disposed on the second surface of the GaN-based semiconductor structure; and a passivation layer disposed on the side surface and the second surface of the GaN-based se
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: March 24, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jong Lam Lee, In-kwon Jeong, Myung Cheol Yoo
  • Patent number: 10586829
    Abstract: Monolithic pixels are implemented by laterally disposed green, blue and red micro-LED sub-pixels separated by dielectric sidewalls. The green and blue sub-pixels are formed with nitride-based material layers while the red sub-pixel is formed with non-nitride-based material layers that yield an optically-efficient red sub-pixel that is intensity-balanced with the green and blue sub-pixels.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: March 10, 2020
    Inventor: Myung Cheol Yoo
  • Patent number: 10553744
    Abstract: A light emitting device can include a substrate including first and second surfaces, the substrate having a thickness of less than 350 micrometers; a reflective layer on the second surface of the substrate; a light emitting structure on the first surface of the substrate and including first and second semiconductor layers with an active layer therebetween, the second semiconductor layer includes an aluminum-gallium-nitride layer, and the active layer includes aluminum and indium and has a multiple quantum well layer; a transparent conductive layer disposed on the second semiconductor layer and including an indium-tin-oxide; a first electrode on the first semiconductor layer and including multiple layers; a second electrode on the transparent conductive layer and including multiple layers; first and second pads on the first and second electrodes, respectively, in which the second pad includes the same material as the first pad and has a thickness of more than 500 nanometers.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: February 4, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Myung Cheol Yoo
  • Publication number: 20200006598
    Abstract: A vertical topology light emitting device can include a conductive support structure; an adhesion layer disposed on the conductive support structure; a p-type contact disposed on the adhesion layer; a GaN-based semiconductor structure disposed on the p-type contact, in which the GaN-based semiconductor structure includes an n-type GaN-based layer, a p-type GaN-based layer, and an active layer between the n-type GaN-based layer and the p-type GaN-based layer, in which the n-type GaN-based layer has an etched flat surface, and the GaN-based semiconductor structure includes a bottom surface proximate to the conductive support structure, a top surface opposite to the bottom surface, and a side surface between the top surface and the bottom surface; an interface layer on the GaN-based semiconductor structure; and a contact pad disposed on the interface layer, in which the interface layer includes a portion which directly contacts the etched flat surface of the n-type GaN-based layer, and a first thickness of the c
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Applicant: LG INNOTEK CO., LTD.
    Inventor: Myung Cheol YOO
  • Publication number: 20200006593
    Abstract: A light-emitting device can include a conductive support structure comprising a metal; a GaN-based semiconductor structure disposed on the conductive support structure, the GaN-based semiconductor structure including a p-type GaN-based layer, a GaN-based active layer and an n-type GaN-based layer, in which the GaN-based semiconductor structure has a first surface, a side surface and a second surface, in which the first surface, relative to the second surface, is proximate to the conductive support structure, in which the second surface is opposite to the first surface, in which the conductive support structure is thicker than the p-type GaN-based semiconductor layer, and the conductive support structure is thicker than the n-type GaN-based semiconductor layer; a p-type electrode disposed on the conductive support structure; an n-type electrode disposed on the second surface of the GaN-based semiconductor structure; and a passivation layer disposed on the side surface and the second surface of the GaN-based se
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Jong Lam LEE, ln-kwon JEONG, Myung Cheol YOO