Patents by Inventor Dong Kyu Choi

Dong Kyu 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).

  • Patent number: 11966622
    Abstract: A memory storage device that performs real-time monitoring is provided. The memory storage device comprises a memory controller, and a status indicating module/circuit, wherein the memory controller is configured to perform a first a second initialization operation, the first and second initialization operations performed in response to turning-on of the memory storage device, to generate a first status parameter regarding a status of the memory storage device in which the first initialization operation is performed, and to generate a second status parameter regarding the status of the memory storage device in which a second initialization operation is performed. The status indicating circuit includes a first transistor configured to operate on the basis of the first status parameter, a first resistor connected to the first transistor, a second transistor configured to operate on the basis of the second status parameter, and a second resistor connected to the second transistor.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: April 23, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Oh Huh, Jong Kyu Choi, Soo-Hyeong Kim, Dong Hee Kim, Young San Kang
  • Patent number: 11967269
    Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: April 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kyu Kang, Sung Hwan Kim, Soo Hee Oh, Dong Sun Lee, Sang Moo Choi
  • Publication number: 20240109397
    Abstract: A method for controlling an electric heater of a vehicular heating, ventilation, and air conditioning (HVAC) system includes turning on the electric heater; determining whether an ambient air temperature of a vehicle is higher than or equal to a threshold ambient air temperature, and a battery temperature is lower than or equal to a threshold battery temperature; determining whether battery efficiency is lower than or equal to threshold efficiency when the ambient air temperature of the vehicle is higher than or equal to the threshold ambient air temperature, and the battery temperature is lower than or equal to the threshold battery temperature; and turning off the electric heater when the battery efficiency is lower than or equal to the threshold efficiency, wherein the electric heater is configured to receive electric energy from the battery.
    Type: Application
    Filed: March 30, 2023
    Publication date: April 4, 2024
    Inventors: Dae Hyun Song, Chang Gi Ryu, Woo Jin Lee, Dong Ju Ko, Hyun Hun Choi, Chun Kyu Kwon, In Uk Ko
  • Publication number: 20240109828
    Abstract: A method of removing a metal substance in a petrochemical product including: supplying a petrochemical product stream to an incoming tank through a supply pipe, circulating the petrochemical product stream through an incoming tank circulation pipe, and removing a metal substance included in the petrochemical product stream using a magnetic filter; transporting the petrochemical product stream to an outgoing tank through an incoming tank discharge pipe which is branched from the incoming tank circulation pipe and connected to an outgoing tank; circulating the petrochemical product stream through an outgoing tank circulation pipe provided in the outgoing tank and removing the metal substance included in the petrochemical product stream using a magnetic filter; and transporting the petrochemical product stream to a branch pipe branched from the outgoing tank circulation pipe to remove the metal substance using an ion exchange resin filter.
    Type: Application
    Filed: August 12, 2021
    Publication date: April 4, 2024
    Inventors: Tae Woo Kim, Sung Kyu Lee, Byung Woo Choi, Hong Soo Joo, Dong Ha Lee
  • Publication number: 20240003496
    Abstract: Disclosed is a method of discharging lubricant oil from a BOG reliquefaction system configured to reliquefy BOG by compressing the BOG by a compressor, cooling the compressed BOG through heat exchange with non-compressed BOG by a heat exchanger, and reducing a pressure of fluid cooled through heat exchange by a pressure reducer. In the lubricant oil discharge method, the compressor comprises at least one oil-lubrication type cylinder and it is determined that it is time to discharge condensed or solidified lubricant oil, if at least one of preset conditions is satisfied.
    Type: Application
    Filed: September 14, 2023
    Publication date: January 4, 2024
    Inventors: Joon Chae LEE, Dong Kyu CHOI, Won Jae CHOI, Sung Kak LYU, Jae Hyeoung JANG
  • Patent number: 11724781
    Abstract: A BOG reliquefaction system includes: a compressor; a heat exchanger cooling the BOG compressed by the compressor through heat exchange using BOG not compressed by the compressor; a pressure reducer disposed downstream of the heat exchanger and reducing a pressure of fluid cooled by the heat exchanger; and a combination of a first temperature sensor disposed upstream of a cold fluid channel of the heat exchanger and a fourth temperature sensor disposed downstream of a hot fluid channel of the heat exchanger, combination of a second temperature sensor disposed downstream of the cold fluid channel of the heat exchanger and a third temperature sensor disposed upstream of the hot fluid channel of the heat exchanger, or combination of a first pressure sensor disposed upstream of the hot fluid channel of the heat exchanger and a second pressure sensor disposed downstream of the hot fluid channel of the heat exchanger.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: August 15, 2023
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Joon Chae Lee, Dong Kyu Choi, Hyun Jun Shin
  • Patent number: 11724789
    Abstract: Disclosed herein is a BOG reliquefaction method for LNG ships. The BOG reliquefaction method for LNG ships includes: 1) compressing BOG; 2) cooling the BOG compressed in Step 1) through heat exchange between the compressed BOG and a refrigerant using a heat exchanger; 3) expanding the BOG cooled in Step 2); and 4) stably maintaining reliquefaction performance regardless of change in flow rate of the BOG compressed in Step 1) and supplied to the heat exchanger to be used as a reliquefaction target.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: August 15, 2023
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Hae Won Jung, Dong Eok Kang, Joon Chae Lee, Dong Kyu Choi
  • Publication number: 20230142654
    Abstract: The present invention relates to a method for preparing a biomaterial having selectively functionalized tyrosine, a biomaterial having selectively functionalized tyrosine, and a pharmaceutical composition containing the same as an active ingredient. The method for preparing a biomaterial to which a compound represented by formula 2 is coupled, of the present invention, allows the compound represented by formula 2 to be selectively coupled, in a high yield in a biomaterial, to tyrosine, which is present on the surface of an aqueous solution such that the coupling thereof to amino acids other than tyrosine does not occur and, when only one tyrosine is present, heterogeneous mixtures are not present and the inherent activity of the biomaterial is maintained, and thus the compound can be effectively used as a pharmaceutical composition containing a biomaterial drug as an active ingredient.
    Type: Application
    Filed: January 15, 2021
    Publication date: May 11, 2023
    Inventors: Chun Young IM, Sang Hyun MIN, Ji Hoon YU, Eun Bi KO, So Young KIM, Seungyeon LEE, Dong Kyu CHOI, Heejin LEE, Ga Young PARK, Doohyun LEE, Eunmi HONG, Hui-Jeon JEON, Young-Hoon PARK, Ye Ri HAN, Nam Hui KIM, Jun Woo KIM, Bae Jun OH, Jeong-Eun PARK, Chang Hoon SEO, Minsoo SONG, Seonggu RO, Dongkyu SHIN
  • Publication number: 20230010508
    Abstract: The present invention relates to a compound comprising an EZH2 inhibitor and an E3 ligase binder, and a pharmaceutical composition for preventing or treating EZH2-associated disease and a pharmaceutical composition for selective protein degradation containing the same as an active ingredient. Since the compound of the present invention can selectively degrade EZH2, it can be effectively used for the treatment of EZH2-related diseases and cancers, particularly, cancers in which EZH2 is overexpressed, and can be usefully used for the selective degradation of EZH2.
    Type: Application
    Filed: October 29, 2020
    Publication date: January 12, 2023
    Applicant: DAEGU-GYEONGBUK MEDICAL INNOVATION FOUNDATION
    Inventors: Ji-Hoon Yu, Chun Young lm, SoYoung Kim, Ye Ri Han, Doohyun Lee, Hui-Jeon Jeon, Sang-Hyun Min, Bae Jun Oh, Sang-Wook Park, Dong-Kyu Choi, Young-Kyu Kim, Sung Hwan Kim, Yuri Lee, Seungyeon Lee, Nam Hui Kim, Sang Bum Kim, Ju-Sik Min
  • Patent number: 11521140
    Abstract: A work object processing apparatus includes: a message thread processing unit configured to be displayed through a chat room of an Internet messenger associated with a message thread, to receive a work object including a work producer, a work processor, and work contents, and to process a work object operation on the message thread; and a work object processing unit configured to process a work object state of the work object changed, from among a plurality of work object states of the work object included in a work processing diagram, based on a work interaction between the work producer and the work processor.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: December 6, 2022
    Assignees: DELTA PDS CO., LTD.
    Inventors: Hyun Kyu Choi, Dong Kyu Choi, Jae Ho Choi
  • Patent number: 11473730
    Abstract: Disclosed is a BOG reliquefaction system. The BOG reliquefaction system includes: a compressor compressing BOG; a heat exchanger cooling the BOG compressed by the compressor through heat exchange using BOG discharged from a storage tank as a refrigerant; a bypass line through which the BOG is supplied to the compressor after bypassing the heat exchanger; a second valve disposed on a second supply line through which the BOG used as the refrigerant in the heat exchanger is supplied to the compressor, the second valve regulating a flow rate of fluid and opening/closing of the second supply line; and a pressure reducer disposed downstream of the heat exchanger and reducing a pressure of fluid cooled by the heat exchanger, wherein the compressor includes at least one oil-lubrication type cylinder and the bypass line is joined to the second supply line downstream of the second valve.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: October 18, 2022
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Joon Chae Lee, Dong Kyu Choi, Won Jae Choi, Hyun Jun Shin
  • Publication number: 20220313633
    Abstract: A composition according to an embodiment of the present disclosure includes a N-phenyl-methylsulfonamido-acetamide compound represented by Formula 1. The composition may inhibit osteoclast differentiation and/or formation and exhibit excellent prophylactic or therapeutic effects on various bone diseases including periodontitis and the like. A method for treating a bone disease caused by hyperdifferentiation of osteoclasts according to an embodiment of the present disclosure includes administering to a subject in need thereof the composition.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 6, 2022
    Inventors: Tae Hoon LEE, Sun Woo LEE, Eun Jin CHO, Sang Hyun MIN, Geun Joong KIM, Dong Kyu CHOI
  • Publication number: 20220274935
    Abstract: A composition according to an embodiment of the present disclosure includes a compound represented by Formula 1. The composition may inhibit osteoclast differentiation and/or formation and exhibit excellent prophylactic or therapeutic effects on various bone diseases including periodontitis and the like. A method for treating a bone disease caused by hyperdifferentiation of osteoclasts according to an embodiment of the present disclosure includes administering to a subject in need thereof the composition.
    Type: Application
    Filed: July 14, 2020
    Publication date: September 1, 2022
    Inventors: Tae Hoon LEE, Sun Woo LEE, Geun Joong KIM, Eun Jin CHO, Zhihao CHEN, Mina DING, Sang Hyun MIN, Dong Kyu CHOI
  • Patent number: 11325682
    Abstract: An apparatus for reliquefaction of boil-off gas for a vessel, comprises: a compression unit for compressing the boil-off gas discharged from the storage tank; and a heat exchanger for heat-exchanging the compressed boil-off gas compressed by the compression unit with the boil-off gas discharged from the storage tank; a first expansion means for dividing the boil-off gas passing through the heat exchanger into at least two flows including a first flow and a second flow, and expanding the divided first flow; a first intercooler for cooling the second flow remaining after the division of the first flow by using the first flow expanded by the expansion means as a refrigerant; and a receiver for receiving a second flow having passed through the first intercooler, in which a downstream pressure of the compression unit is controlled by a flow discharged from the receiver.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: May 10, 2022
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Seung Chul Lee, Seon Jin Kim, Dong Kyu Choi
  • Patent number: 11242123
    Abstract: A system for reliquefying a boil off gas generated in a storage tank includes a first compressor compressing a partial amount (hereinafter, referred to as ‘fluid a’) of boil off gas discharged from the storage tank, a second compressor compressing another partial amount (hereinafter, referred to as ‘fluid b’) of boil off gas discharged from the storage tank, a second expanding unit expanding a partial amount (hereinafter, referred to as ‘fluid c’) of a flow formed as the fluid a and the fluid b join, a heat-exchanger cooling another partial amount (hereinafter, referred to as ‘fluid d’) of the flow formed as the fluid a and the fluid b join, and a first expanding unit expanding the fluid d cooled by the heat-exchanger, wherein the heat-exchanger heat-exchanges the fluid d with the fluid c as a coolant expanded by the second expanding unit to cool the fluid d.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: February 8, 2022
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Hyun Jun Shin, Dong Kyu Choi, Young Sik Moon, Su Kyung An, Joon Chae Lee
  • Patent number: 11168837
    Abstract: Disclosed is a liquefied natural gas storage apparatus. The apparatus includes a heat insulated tank and liquefied natural gas contained in the tank. The tank has heat insulation sufficient to maintain liquefied natural gas therein such that most of the liquefied natural gas stays in liquid. The contained liquefied natural gas has a vapor pressure from about 0.3 bar to about 2 bar. The apparatus further includes a safety valve configured to release a part of liquefied natural gas contained in the tank when a vapor pressure of liquefied natural gas within the tank becomes higher than a cut-off pressure. The cut-off pressure is from about 0.3 bar to about 2 bar.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: November 9, 2021
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Jung Han Lee, Jung Ho Choi, Sung Kon Han, Dong Kyu Choi, Young Sik Moon
  • Publication number: 20210148513
    Abstract: Disclosed is a method of discharging lubricant oil from a BOG reliquefaction system configured to reliquefy BOG by compressing the BOG by a compressor, cooling the compressed BOG through heat exchange with non-compressed BOG by a heat exchanger, and reducing a pressure of fluid cooled through heat exchange by a pressure reducer. In the lubricant oil discharge method, the compressor comprises at least one oil-lubrication type cylinder and it is determined that it is time to discharge condensed or solidified lubricant oil, if at least one of preset conditions is satisfied.
    Type: Application
    Filed: August 3, 2017
    Publication date: May 20, 2021
    Inventors: Joon Chae LEE, Dong Kyu CHOI, Won Jae CHOI, Sung Kak LYU, Jae Hyeoung JANG
  • Publication number: 20210148514
    Abstract: Disclosed is a BOG reliquefaction system. The BOG reliquefaction system includes: a compressor compressing BOG; a heat exchanger cooling the BOG compressed by the compressor through heat exchange using BOG discharged from a storage tank as a refrigerant; a bypass line through which the BOG is supplied to the compressor after bypassing the heat exchanger; a second valve disposed on a second supply line through which the BOG used as the refrigerant in the heat exchanger is supplied to the compressor, the second valve regulating a flow rate of fluid and opening/closing of the second supply line; and a pressure reducer disposed downstream of the heat exchanger and reducing a pressure of fluid cooled by the heat exchanger, wherein the compressor includes at least one oil-lubrication type cylinder and the bypass line is joined to the second supply line downstream of the second valve.
    Type: Application
    Filed: August 3, 2017
    Publication date: May 20, 2021
    Inventors: Joon Chae LEE, Dong Kyu CHOI, Won Jae CHOI, Hyun Jun SHIN
  • Publication number: 20210049538
    Abstract: A work object processing apparatus includes: a message thread processing unit configured to be displayed through a chat room of an Internet messenger associated with a message thread, to receive a work object including a work producer, a work processor, and work contents, and to process a work object operation on the message thread; and a work object processing unit configured to process a work object state of the work object changed, from among a plurality of work object states of the work object included in a work processing diagram, based on a work interaction between the work producer and the work processor.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Applicants: DELTA PDS CO., LTD
    Inventors: Hyun Kyu CHOI, Dong Kyu CHOI, Jae Ho CHOI
  • Patent number: 10870647
    Abstract: The present invention relates to a novel imidazopyridine derivative, a method for preparing the same, and a pharmaceutical composition containing the same as an active ingredient for preventing or treating cancer. The novel imidazopyridine derivative according to the present invention, a stereoisomer thereof and a pharmaceutically acceptable salt thereof can effectively inhibit cancer-related kinases, are excellent in inhibiting proliferation of cancer cells in a cancer cell line, and effectively inhibit proliferation of cancer cells (cancer cell apoptosis) in a cancer cell heterograft model, and thus can be useful as a pharmaceutical composition containing the same as an active ingredient for preventing or treating cancer.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: December 22, 2020
    Assignee: DAEGU-GYEONGBUK MEDICAL INNOVATION FOUNDATION
    Inventors: Hwan Geun Choi, Jung Beom Son, Shinae Kim, Seungyeon Lee, Eunhwa Ko, Joongheui Cho, Seock Yong Kang, So Young Kim, Jin-Hee Park, Yi Kyung Ko, Hee Yoon Ryu, Nam Doo Kim, Hyunkyoung Kim, Younho Lee, Sun-Hwa Lee, Dayea Kim, Sun Joo Lee, Seongho Hong, Sang Hyun Min, Sungwoo Lee, Dong Kyu Choi, Jae Hyun Bae, Eunmi Hong, Tae-Ho Jang, Jaeyoung Song, Sangbum Kim, Suk Kyoon Yoon