Patents by Inventor Jeong-Soo Choi

Jeong-Soo 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: 11944958
    Abstract: Disclosed herein are a catalyst for hydrocracking reaction of high molecular weight components in bio-oil, a method for preparing the same and a method for bio-oil upgrading using the same. The catalyst includes a zeolite carrier; and at least one metal selected from the group consisting of nickel (Ni), ruthenium (Ru) and cerium (Ce) supported on the carrier. The catalyst promotes the hydrocracking of high molecular weight compounds contained in the bio-oil, but also inhibits the polymerization reaction of the decomposed product, thereby more effectively enhancing the hydrocracking reaction of the bio-oil.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: April 2, 2024
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chunjae Yoo, Jeong-Myeong Ha, Dong Jin Suh, Jae Wook Choi, Young Hyun Yoon, Kyeongsu Kim, Chang Soo Kim, Kwang Ho Kim, Thi Lien Do
  • Patent number: 11939173
    Abstract: A transportation head for a microchip transfer device capable of minimizing mechanical and chemical damage to a microchip, a microchip transfer device having same, and a transfer method thereby, and the transportation head includes a head body having a pickup area and a dummy area; a first protruding pin disposed in the pickup area of the head body; and a liquid droplet attached to the first protruding pin.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: March 26, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dahl-Young Khang, Sung-Hwan Hwang, Jia Lee, Sung-Soo Yoon, Su Seok Choi, Kiseok Chang, Jeong Min Moon, Soon Shin Jung, Sungpil Ryu, Jihwan Jung
  • Patent number: 11937462
    Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jeong-Mook Choi, Nack-Youn Jung, Hee-Jin Kim, Hak-Min Lee, Myung-O Joo, Sung-Soo Park
  • Publication number: 20240082095
    Abstract: Disclosed is an exoskeleton-type rehabilitation robot system, including: a body part provided on a chair in which a user sits and provided with a robot arm capable of moving left or right based on the user seated on the chair; a conversion part configured to convert a position of the robot arm with respect to the body part; a driving part configured to articulate the robot arm with respect to the body part; and a controller configured to detect a change in a position of the robot arm and control a left or right driving mode of the driving part according to the position of the robot arm. In accordance with such a configuration, the exoskeleton-type rehabilitation robot system of the present invention is provided integrally with a chair, thereby having excellent space utilization. In addition, the user's initial preparation for rehabilitation training is simple, which can improve efficiency.
    Type: Application
    Filed: December 27, 2021
    Publication date: March 14, 2024
    Applicant: HEXARHUMANCAR CO., LTD
    Inventors: Chang Soo HAN, Ho Jun KIM, Su Hyun PARK, Young Hoon JI, Jeong Ho CHO, Byung Gab RYU, Jeong Gyu PARK, Dong Eun CHOI
  • Patent number: 10365524
    Abstract: A liquid crystal display in which the common voltage line is disposed directly on or directly under the common electrode directly contacts the common electrode such that a signal delay of the common voltage line may be reduced and simultaneously a reduction in the aperture ratio of the liquid crystal display may be prevented.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: July 30, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Hoon Kim, Joo Seok Yeom, Kyu Wan Ryu, Jeong Soo Choi
  • Publication number: 20180059495
    Abstract: A liquid crystal display in which the common voltage line is disposed directly on or directly under the common electrode directly contacts the common electrode such that a signal delay of the common voltage line may be reduced and simultaneously a reduction in the aperture ratio of the liquid crystal display may be prevented.
    Type: Application
    Filed: November 6, 2017
    Publication date: March 1, 2018
    Inventors: Sung-Hoon KIM, Joo Seok YEOM, Kyu Wan RYU, Jeong Soo CHOI
  • Patent number: 9835915
    Abstract: A liquid crystal display in which the common voltage line is disposed directly on or directly under the common electrode directly contacts the common electrode such that a signal delay of the common voltage line may be reduced and simultaneously a reduction in the aperture ratio of the liquid crystal display may be prevented.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: December 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Hoon Kim, Joo Seok Yeom, Kyu Wan Ryu, Jeong Soo Choi
  • Patent number: 9551906
    Abstract: A liquid crystal display is provided. A liquid crystal display includes: a first substrate; a thin film transistor disposed on the first substrate; and a first electrode disposed on the thin film transistor and connected to an output terminal of the thin film transistor, wherein the first electrode includes a first region and a second region each including a plurality of minute branches separated from each other by open parts, portions of at least two minute branches among the plurality of minute branches are connected to form a plurality of minute plate branches, and wherein the minute plate branch has a wider width than a minute branch.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: January 24, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Il Tae, Sung Hoon Kim, Hyun-Ho Kang, Yong Woo Hyung, Jang-Il Kim, Eun-Kil Park, Jeong Soo Choi, Bo Yeong Kim, Jae-Jin Song
  • Publication number: 20150234240
    Abstract: A liquid crystal display is provided. A liquid crystal display includes: a first substrate; a thin film transistor disposed on the first substrate; and a first electrode disposed on the thin film transistor and connected to an output terminal of the thin film transistor, wherein the first electrode includes a first region and a second region each including a plurality of minute branches separated from each other by open parts, portions of at least two minute branches among the plurality of minute branches are connected to form a plurality of minute plate branches, and wherein the minute plate branch has a wider width than a minute branch.
    Type: Application
    Filed: May 1, 2015
    Publication date: August 20, 2015
    Inventors: Chang Il TAE, Sung Hoon KIM, Hyun-Ho KANG, Yong Woo HYUNG, Jang-Il KIM, Eun-Kil PARK, Jeong Soo CHOI, Bo Yeong KIM, Jae-Jin SONG
  • Patent number: 9046713
    Abstract: A liquid crystal display is provided. A liquid crystal display includes: a first substrate; a thin film transistor disposed on the first substrate; and a first electrode disposed on the thin film transistor and connected to an output terminal of the thin film transistor, wherein the first electrode includes a first region and a second region each including a plurality of minute branches separated from each other by open parts, portions of at least two minute branches among the plurality of minute branches are connected to form a plurality of minute plate branches, and wherein the minute plate branch has a wider width than a minute branch.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: June 2, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Il Tae, Sung Hoon Kim, Hyun-Ho Kang, Yong Woo Hyung, Jang-Il Kim, Eun-Kil Park, Jeong Soo Choi, Bo Yeong Kim, Jae-Jin Song
  • Patent number: 8789440
    Abstract: This disclosure relates to a face robot which is operated similarly to the motion of a human head and a multi-joint manipulator which supports a robot's face, and more particularly, to a structure which may compensate an influence caused by the gravity and exerted on rotation parts rotating about its axes. A manipulator with a weight compensation mechanism of the disclosure is provided, the manipulator having rotation parts connected to a plurality of axes rotating about their axes, the manipulator including: a weight compensation mechanism that supports wires connected to the rotation parts receiving gravity in a rotation state by a spring and compensates an influence of gravity exerted on the rotation parts.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: July 29, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Seung Jong Kim, Chang Hyun Cho, Jeong Soo Choi, Kyung Geune Oh, Chan Yul Jung
  • Patent number: 8582061
    Abstract: An optical film assembly includes a first polarization plate disposed below a liquid crystal layer and having a first absorption axis, a second polarization plate disposed above the liquid crystal layer and having a second absorption axis, an A-plate disposed between the first polarization plate and the second polarization plate, and a negative C-plate disposed between the first polarization plate and the second polarization plate. A thickness-direction phase retardation value of the negative C-plate is equal to or less than a value acquired by subtracting about 75 nanometers from a thickness-direction phase retardation value of the liquid crystal layer and the thickness-direction phase retardation value of the negative C-plate is equal to or greater than a value acquired by subtracting about 275 nanometers from the thickness-direction phase retardation value of the liquid crystal layer.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: November 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwa-Sung Woo, Seung-Ju Lee, Hee-Wook Do, Jeong-Soo Choi, Hee-Seop Kim, Joo-Seok Yeom, Hyang-Yul Kim, Joo-Nyung Jang, Sung-Woon Kim, Cheol Shin, Dong-Chul Shin
  • Publication number: 20130194536
    Abstract: A liquid crystal display is provided. A liquid crystal display includes: a first substrate; a thin film transistor disposed on the first substrate; and a first electrode disposed on the thin film transistor and connected to an output terminal of the thin film transistor, wherein the first electrode includes a first region and a second region each including a plurality of minute branches separated from each other by open parts, portions of at least two minute branches among the plurality of minute branches are connected to form a plurality of minute plate branches, and wherein the minute plate branch has a wider width than a minute branch.
    Type: Application
    Filed: August 17, 2012
    Publication date: August 1, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chang II TAE, Sung Hoon KIM, Hyun-Ho KANG, Yong Woo HYUNG, Jang-Il KIM, Eun-Kil PARK, Jeong Soo CHOI, Bo Yeong KIM, Jae-Jin SONG
  • Publication number: 20130077008
    Abstract: A liquid crystal display in which the common voltage line is disposed directly on or directly under the common electrode directly contacts the common electrode such that a signal delay of the common voltage line may be reduced and simultaneously a reduction in the aperture ratio of the liquid crystal display may be prevented.
    Type: Application
    Filed: July 25, 2012
    Publication date: March 28, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sung-Hoon Kim, Joo Seok Yeom, Kyu Wan Ryu, Jeong Soo Choi
  • Publication number: 20130061709
    Abstract: This disclosure relates to a face robot which is operated similarly to the motion of a human head and a multi-joint manipulator which supports a robot's face, and more particularly, to a structure which may compensate an influence caused by the gravity and exerted on rotation parts rotating about its axes. A manipulator with a weight compensation mechanism of the disclosure is provided, the manipulator having rotation parts connected to a plurality of axes rotating about their axes, the manipulator including: a weight compensation mechanism that supports wires connected to the rotation parts receiving gravity in a rotation state by a spring and compensates an influence of gravity exerted on the rotation parts.
    Type: Application
    Filed: December 8, 2011
    Publication date: March 14, 2013
    Inventors: Seung Jong KIM, Chang Hyun CHO, Jeong Soo CHOI, Kyung Geune OH, Chan Yul JUNG
  • Publication number: 20100328593
    Abstract: An optical film assembly includes a first polarization plate disposed below a liquid crystal layer and having a first absorption axis, a second polarization plate disposed above the liquid crystal layer and having a second absorption axis, an A-plate disposed between the first polarization plate and the second polarization plate, and a negative C-plate disposed between the first polarization plate and the second polarization plate. A thickness-direction phase retardation value of the negative C-plate is equal to or less than a value acquired by subtracting about 75 nanometers from a thickness-direction phase retardation value of the liquid crystal layer and the thickness-direction phase retardation value of the negative C-plate is equal to or greater than a value acquired by subtracting about 275 nanometers from the thickness-direction phase retardation value of the liquid crystal layer.
    Type: Application
    Filed: December 7, 2009
    Publication date: December 30, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hwa-Sung WOO, Seung-Ju LEE, Hee-Wook DO, Jeong-Soo CHOI, Hee-Seop KIM, Joo-Seok YEOM, Hyang-Yul KIM, Joo-Nyung JANG, Sung-Woon KIM, Cheol SHIN, Dong-Chul SHIN
  • Patent number: 6747092
    Abstract: The present invention discloses aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer and polyvinylchloride blend containing the same. Aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer according to the present invention is formed by self-condensation polymerization of monomer having one carboxy functional group and two hydroxy functional groups. Since such aliphatic polyester having highly branched structure has superior compatibility with polyvinylchloride and never flows out contrary to the conventional liquid plasticizer having low molecular weight of phthalate, etc., the problems such as the disturbance of endocrine system of human body and the destruction of ecosystem due to the efflux of plasticizer is not caused and since the same has superior efficiency of plasticization, it is possible to give polyvinylchloride sufficient flexibility.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 8, 2004
    Assignee: Ecotech Co., Ltd.
    Inventors: Seung-Yeop Kwak, Jeong-Soo Choi
  • Patent number: 6570507
    Abstract: Methods and systems are provided for a remote-controllable electronic appliance and a remote controller. A unique call identification code is assigned to each remote controller. The remote-controllable electronic appliance may then call a remote controller based on the unique call identification code. The call identification code may continuously varied after a predetermined period of time. The call identification code may be reset based on a request by the remote controller. Power consumption by the remote controller may also be conserved based on detecting the call identification code.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: May 27, 2003
    Assignee: LG Electronics Inc.
    Inventors: Jae-Kyung Lee, Jeong-Soo Choi
  • Publication number: 20020111406
    Abstract: The present invention discloses aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer and polyvinylchloride blend containing the same. Aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer according to the present invention is formed by self-condensation polymerization of monomer having one carboxy functional group and two hydroxy functional groups. Since such aliphatic polyester having highly branched structure has superior compatibility with polyvinylchloride and never flows out contrary to the conventional liquid plasticizer having low molecular weight of phthalate, etc., the problems such as the disturbance of endocrine system of human body and the destruction of ecosystem due to the efflux of plasticizer is not caused and since the same has superior efficiency of plasticization, it is possible to give polyvinylchloride sufficient flexibility.
    Type: Application
    Filed: December 4, 2001
    Publication date: August 15, 2002
    Inventors: Seung-Yeop Kwak, Jeong-Soo Choi