Patents by Inventor Ji-yeon Kim

Ji-yeon Kim 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).

  • Dehydration catalyst for preparing N-substituted maleimide, preparation method thereof, and method of preparing N-substituted maleimide
    Patent number: 10464050
    Abstract: A dehydration catalyst for preparing N-substituted maleimide, which may minimize formation of by-products, is reusable because its activity is not reduced significantly even after being reused several times, and may maintain its reaction activity for a long time, a preparation method thereof, and a method of preparing N-substituted maleimide, are provided.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: November 5, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Ji Yeon Kim, Jun Seon Choi, Joo Young Cheon, Wang Rae Joe, Kyung Soo Kim
  • Method for preparing acrylic acid from glycerin
    Patent number: 10435347
    Abstract: The present invention relates to a method for preparing acrylic acid from glycerin. More specifically, the present invention provides a method which can improve the selectivity of acrolein by applying a specific catalyst composition and process conditions to minimize the generation of coke carbon of the catalyst, and can prepare acrylic acid with higher productivity for a longer duration of time because a dehydration reaction can be performed for a longer working period while maintaining catalyst activity at a high level during the reaction.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 8, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Kyung Soo Kim, Jun Seon Choi, Ji Yeon Kim, Joo Young Cheon, Wang Rae Joe, Hye Jeong Ok
  • GEL POLYMER ELECTROLYTE, ELECTROCHROMIC DEVICE COMPRISING THE SAME AND PRODUCTION METHOD THEREOF
    Publication number: 20190276607
    Abstract: The present application relates to a gel polymer electrolyte, a method for producing a gel polymer electrolyte, and an electrochromic device comprising the same. As the gel polymer electrolyte comprises a block copolymer, the present application can simultaneously satisfy high ionic conductivity, low turbidity and adhesiveness.
    Type: Application
    Filed: October 30, 2017
    Publication date: September 12, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Kyung Oh KIM, Sa Rah KIM, Ji Yeon KIM, Sung Soo YOON, Su Hee LEE, Su Jeong KIM, Jeong Ae YOON
  • Particle-based modeling method and apparatus
    Patent number: 10360319
    Abstract: A particle-based modeling method and apparatus may include searching for a second particle neighboring a first particle in a vector field at a current time, and updating a position of each of the first particle and the second particle in each vector field over time, based on correcting a velocity of each of the first particle and the second particle based on a variation satisfying an incompressible constraint condition for each of the first particle and the second particle.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: July 23, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nahyup Kang, Hyong Euk Lee, Ji Yeon Kim
  • ELECTROCHROMIC MODULE AND DRIVING METHOD FOR ELECTROCHROMIC DEVICE
    Publication number: 20190219883
    Abstract: An electrochromic module and a driving method for an electrochromic are provided. The electrochromic module has an electrochromic device provided so as to be colored or bleached depending on an applied drive voltage, a sensing part for sensing an external temperature of the electrochromic device, a control part for determining an application time of a voltage satisfying a particular Relation Equation depending on the sensed external temperature, and a power supply part for applying a voltage to the electrochromic device by the determined application time.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 18, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Ji Yeon KIM, Dong Hyun LEE, Jae Sung HAN, Su Hee LEE, Sa Rah KIM, Doo Hoon SONG
  • SYNTHESIS METHOD OF N-SUBSTITUTED MALEIMIDE USING SOLID ACID CATALYSTS
    Publication number: 20190152910
    Abstract: The present invention relates to a synthesis method of N-substituted maleimides using a non-homogeneous solid acid catalyst, and particularly, a synthesis method of N-substituted maleimides with high synthesis yield by using a zirconium(IV) hydrogen phosphate as a catalyst, by which, the loss of the catalyst is minimized, the separation and recovering processes of the catalyst are simplified, in case when the activity of the separated and recovered catalyst is decreased, the complete regeneration of the catalyst is possible via washing or firing, and solvents that could be used during a washing process of the catalyst are not limited.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 23, 2019
    Inventors: Joo Young CHEON, Jun Seon CHOI, Ji Yeon KIM, Wang Rae JOE, Kyung Soo KIM, Eung Seob YEOM, Won Kyun LEE
  • Method of preparing composition for forming positive electrode of lithium secondary battery, and positive electrode and lithium secondary battery manufactured by using the composition
    Patent number: 10290859
    Abstract: Provided are a method of preparing a composition for forming a positive electrode of a lithium secondary battery which includes preparing a first dispersed solution by primary dispersion of a conductive agent and a dispersant in a solvent, preparing a second dispersed solution by adding binder powder to the first dispersed solution and performing secondary dispersion, and adding and mixing a positive electrode active material to the second dispersed solution, and a positive electrode and a lithium secondary battery which are prepared by using the composition. A composition for forming a positive electrode of a lithium secondary battery, which has improved dispersibility, may be prepared by the above method, and internal resistance of the battery may be reduced and output characteristics may be improved when a positive electrode is prepared by using the composition.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 14, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Ji Yeon Kim, Taek Soo Lee, Jun Soo Park, Sang Hoon Choy
  • DEHYDRATION CATALYST FOR PREPARING N-SUBSTITUTED MALEIMIDE, PREPARATION METHOD THEREOF, AND METHOD OF PREPARING N-SUBSTITUTED MALEIMIDE
    Publication number: 20190118168
    Abstract: A dehydration catalyst for preparing N-substituted maleimide, which may minimize formation of by-products, is reusable because its activity is not reduced significantly even after being reused several times, and may maintain its reaction activity for a long time, a preparation method thereof, and a method of preparing N-substituted maleimide, are provided.
    Type: Application
    Filed: August 1, 2017
    Publication date: April 25, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Ji Yeon KIM, Jun Seon CHOI, Joo Young CHEON, Wang Rae JOE, Kyung Soo KIM
  • REAR LAMP APPARATUS OF VEHICLE
    Publication number: 20190113203
    Abstract: A rear lamp apparatus of a vehicle is provided. The rear lamp apparatus includes a light source configured to irradiate beams, a hologram lens configured to generate a specific image when the beams irradiated from the light source are incident thereto and a reflector disposed to position the beams of the light source incident thereto and reflect the beams irradiated from the light source to transmit the beams to the hologram lens. A shield is disposed between the light source and the hologram lens to block the beams irradiated from the light source to prevent the beams from being incident to the hologram lens. Accordingly, the rear lamp apparatus resolves distortion when a hologram image is formed and is advantageous in a layout by reducing a reproduction distance when a recording distance of the hologram image is increased..
    Type: Application
    Filed: December 4, 2017
    Publication date: April 18, 2019
    Inventors: Byoung Suk Ahn, Jik Soo Shin, Jung Wook Lim, Ki Hong Lee, Sung Wook Yoon, Ji Yeon Kim
  • Display device
    Patent number: 10261546
    Abstract: A display device, including: a display panel configured to display an image through a frontal surface thereof; and a window substrate disposed on the frontal surface of the display panel. The window substrate includes at least two sheets of base substrates. The display device may also include an ultraviolet blocking layer. The ultraviolet blocking layer may be disposed between the at least two base substrates.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: April 16, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ik Hyung Park, Ji Yeon Kim, Myung Hwan Kim, Dae Ho Yoon, Seong Jin Hwang
  • FORCE TOUCH SENSOR AND MANUFACTURING METHOD THEREOF
    Publication number: 20190095025
    Abstract: The present invention relates to a force touch sensor and a manufacturing method thereof. The force touch sensor according to the present invention includes a lower electrode layer bonded to a display, an upper electrode layer bonded to a polarizing plate, and a transparent dielectric layer bonded to the lower electrode layer and the upper electrode layer. According to the present invention, thin film characteristics and flexible characteristics may be improved, manufacturing costs and manufacturing time may be reduced, and manufacturing processes may be simplified and product yield may be improved by simplifying functional layers constituting the force touch sensor.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Inventors: Dong Ki Keum, Ji Yeon Kim, Gwang Yong Tak
  • Composition for anisotropic conductive film, anisotropic conductive film, and connection structure using the same
    Patent number: 10224303
    Abstract: An anisotropic conductive film composition, an anisotropic conductive film prepared using the same, and a connection structure using the same, the anisotropic conductive film including a binder resin; a curable alicyclic epoxy compound; a curable oxetane compound; a quaternary ammonium catalyst; and conductive particles, wherein the anisotropic conductive film has a heat quantity variation rate of about 15% or less, as measured by differential scanning calorimetry (DSC) and calculated by Equation 1: Heat quantity variation rate (%)=[(H0?H1)/H0]×100??Equation 1 wherein H0 is a DSC heat quantity of the anisotropic conductive film, as measured at 25° C. and a time point of 0 hr, and H1 is a DSC heat quantity of the anisotropic conductive film, as measured after being left at 40° C. for 24 hours.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Youn Jo Ko, Soon Young Kwon, Ji Yeon Kim, Ha Na Kim, Young Woo Park, Hyun Joo Seo, Gun Young Heo, Ja Young Hwang
  • IMIDAZOPYRIMIDINE AND IMIDAZOTRIAZINE DERIVATIVE, AND PHARMACEUTICAL COMPOSITION COMPRISING THE SAME
    Publication number: 20190031669
    Abstract: The present disclosure provides a compound of Chemical Formula (1) or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition comprising the same: wherein X, Z, R1 and R2 are as defined in the specification. The compound of Chemical Formula (1) or pharmaceutically acceptable salt thereof acts as a positive allosteric modulator of metabotropic glutamate receptor subtype 5 (mGluR5), thereby being useful in the prevention or treatment of disorder mediated by glutamate dysfunction and mGluR5.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Inventors: Chun Eung PARK, Young Koo JANG, Yong Je SHIN, Ji Yeon KIM, Seung Mo HAM, Yong Gil KIM, Hye Kyung MIN, Soo Bong CHA, Hyo Jun JUNG, Ju Young LEE, Seung Nam HAN, Jin Yong CHUNG, Eun Ju CHOI, Chan Mi JOUNG, Jong Sil PARK, Ji Won LEE, Nahm Ryune CHO, Eun Ju RYU, Cheol Young MAENG
  • Method and apparatus of diagnosing cardiac diseases based on modeling of cardiac motion
    Patent number: 10130332
    Abstract: A method and an apparatus for diagnosing cardiac diseases based on a cardiac motion modeling are provided. The method may include applying physical characteristics of a cardiac motion to a 3D heart shape model, deriving a boundary condition by fusing the 3D heart shape model to which the physical characteristics are applied and a plurality of cardiac ultrasound images according to a temporal change, obtained to acquire a dynamic image, and diagnosing the cardiac diseases using a result of modeling that models the cardiac motion of the user using the boundary condition.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: November 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji Yeon Kim, Hyong Euk Lee, Na Hyup Kang
  • LITHIUM SECONDARY BATTERY
    Publication number: 20180309161
    Abstract: The present disclosure relates to a lithium secondary battery which ensures reaction uniformity even though it uses a high-loading electrode, and thus has high capacity and improved cycle characteristics. The lithium secondary battery includes: an electrode assembly including a positive electrode, a negative electrode and a separator interposed between the positive electrode and the negative electrode; an electrolyte including a lithium salt and an organic solvent; and a battery casing receiving the electrode assembly and the electrolyte, wherein the positive electrode has a loading amount of 3.5 mAh/cm2 or more, the separator has an air permeability of 200-1200 sec/100 mL, and the electrolyte has a lithium ion conductivity of 11-20 mS/cm.
    Type: Application
    Filed: February 27, 2017
    Publication date: October 25, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Hyuk-Su Kim, Ji-Yeon Kim, Sung-Ryul Park
  • Imidazopyrimidine and imidazotriazine derivative, and pharmaceutical composition comprising the same
    Patent number: 10100057
    Abstract: The present disclosure provides a compound of Chemical Formula (1) or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition comprising the same: wherein X, Z, R1 and R2 are as defined in the specification. The compound of Chemical Formula (1) or pharmaceutically acceptable salt thereof acts as a positive allosteric modulator of metabotropic glutamate receptor subtype 5 (mGluR5), thereby being useful in the prevention or treatment of disorder mediated by glutamate dysfunction and mGluR5.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: October 16, 2018
    Assignee: SK BIOPHARMACEUTICALS CO., LTD.
    Inventors: Chun Eung Park, Young Koo Jang, Yong Je Shin, Ji Yeon Kim, Seung Mo Ham, Yong Gil Kim, Hye Kyung Min, Soo Bong Cha, Hyo Jun Jung, Ju Young Lee, Seung Nam Han, Jin Yong Chung, Eun Ju Choi, Chan Mi Joung, Jong Sil Park, Ji Won Lee, Nahm Ryune Cho, Eun Ju Ryu, Cheol Young Maeng
  • METHOD FOR PREPARING ACRYLIC ACID FROM GLYCERIN
    Publication number: 20180273460
    Abstract: The present invention relates to a method for preparing acrylic acid from glycerin. More specifically, the present invention provides a method which can improve the selectivity of acrolein by applying a specific catalyst composition and process conditions to minimize the generation of coke carbon of the catalyst, and can prepare acrylic acid with higher productivity for a longer duration of time because a dehydration reaction can be performed for a longer working period while maintaining catalyst activity at a high level during the reaction.
    Type: Application
    Filed: December 15, 2016
    Publication date: September 27, 2018
    Inventors: Kyung Soo KIM, Jun Seon CHOI, Ji Yeon KIM, Joo Young CHEON, Wang Rae JOE, Hye Jeong OK
  • CATALYST FOR DEHYDRATION OF GLYCERIN, PREPARATION METHOD THEREOF, AND PRODUCTION METHOD OF ACROLEIN USING THE CATALYST (AS AMENDED)
    Publication number: 20180257063
    Abstract: The present disclosure relates to a catalyst for dehydration of glycerin, a preparation method thereof, and a production method of acrolein using the catalyst. Particularly, the catalyst according to an embodiment of the present disclosure is used in a dehydration reaction of glycerin to exhibit high catalytic activity, a high yield, and high selectivity to acrolein and acrylic acid, and has a longer lifetime compared to the conventional catalysts due to a characteristic that coke carbon cannot be easily deposited on the surface of the catalyst.
    Type: Application
    Filed: December 15, 2016
    Publication date: September 13, 2018
    Inventors: Jun Seon CHOI, Ji Yeon KIM, Joo Young CHEON, Wang Rae JOE, Hye Jeong OK, Kyung Soo KIM
  • Transmittance-variable film and method for producing same
    Patent number: 10067399
    Abstract: The present invention relates to a transmittance-variable film and a method for producing the same, the film comprising: a transparent substrate; a wire electrode formed on the top of the transparent substrate; an insulating layer formed on the top of the wire electrode; a plurality of partition walls positioned on both sides of the wire electrode; a transparent electrode formed on the top of the plurality of partition walls; a cell configured to be surrounded by the plurality of partition walls, the insulating layer and the transparent electrode; and a charged particle fluid contained inside the cell, wherein the insulating layer is formed with a thickness of 0.4 to 1 ?m.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: September 4, 2018
    Assignee: LG Hausys, Ltd.
    Inventors: Ji-Won Lim, Min-Hee Lee, Ji-Yeon Kim, Dong-Eung Kim
  • Catalyst for glycerin dehydration, preparation method therefor, and acrolein preparation method using catalyst
    Patent number: 10046307
    Abstract: The present invention relates to: a catalyst for glycerin dehydration; a preparation method therefor; and an acrolein preparation method using the catalyst. According to one embodiment of the present invention, the catalyst is used in glycerin dehydration so as to exhibit high catalytic activity, a high yield and high acrolein selectivity, and has a characteristic in which carbon is not readily deposited, thereby having a long lifetime compared with that of a conventional catalyst.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 14, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Ji Yeon Kim, Jun Seon Choi, Joo Young Cheon, Wang Rae Joe, Hye Jeong Ok, Kyung Soo Kim