Patents by Inventor Yong-Ho Lee

Yong-Ho Lee 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).

  • Low-field nuclear magnetic resonance device and low-field nuclear magnetic resonance method
    Patent number: 9903925
    Abstract: Provided are a low-field nuclear magnetic resonance device and a low-field nuclear magnetic resonance method. The low-field nuclear magnetic resonance device includes a dynamic nuclear polarization (DNP) amplification unit to amplify the nuclear polarization of hydrogen atoms of water using a DNP-possible substance (DNP substance) to provide the amplified nuclear polarization to a measurement target, a sensor unit to measure a magnetic resonance signal of the measurement target using a SQUID sensor or an optically-pumped atomic magnetometer, and a measurement field coil to apply a measurement field to the measurement target. The DNP amplification unit is separated from the measurement target, the sensor unit, and the measurement field coil.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: February 27, 2018
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Ki Woong Kim, Seong-Joo Lee, Chan Seok Kang, Seong-min Hwang, Yong-Ho Lee
  • Method for preparing hybrid supported metallocene catalyst
    Patent number: 9902789
    Abstract: The present invention relates to a method for preparing a hybrid supported metallocene catalyst. More specifically, the present invention relates to a method for preparing a hybrid supported metallocene catalyst by using two or more different types of metallocene compounds. One type of the metallocene compounds shows a high polymerization activity even when it is supported, and thus the catalyst has an excellent activity and can be utilized in the polymerization of olefinic polymers having ultra-high molecular weight. Based on the hybrid supported metallocene catalyst obtained according to the preparation method of the present invention, an olefinic polymer having high molecular weight and the desired physical property can be prepared.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: February 27, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Dae Sik Hong, Heon Yong Kwon, Eun Kyoung Song, Yong Ho Lee, Kyung Jin Cho, Ki Soo Lee, Yi Young Choi
  • METHOD FOR PREPARING POLYOLEFIN
    Publication number: 20180037676
    Abstract: The present invention provides a method for preparing a polyolefin having a broad molecular weight distribution. More specifically, the present invention provides a method for preparing a polyolefin having a broad molecular weight distribution and an ultra-high molecular weight in which an organometallic complex containing a specific Ti—Al complex structure is used as a molecular weight controller (i.e., molecular weight enhance) in the polymerization of an olefin monomer, thereby enabling both solution polymerization and slurry polymerization, particularly enabling the molecular weight distribution to be more readily and effectively controlled.
    Type: Application
    Filed: June 10, 2016
    Publication date: February 8, 2018
    Inventors: Eun Kyoung SONG, Yong Ho LEE, Kyung Jin CHO, Yi Young CHOI, Ki Soo LEE, Heon Yong KWON, Young Suk YOU
  • CATALYST COMPOSITION AND METHOD OF PREPARING POLYOLEFIN USING THE SAME
    Publication number: 20180030166
    Abstract: Provided are a catalyst composition and a method of oligomerizing olefins using the same. When the catalyst composition according to the present invention is used, oligomerization and copolymerization of olefin monomers may be performed in a single reactor at the same time with high efficiency without a separate process of preparing alpha-olefin. Therefore, costs for preparing or purchasing comonomers which are expensive raw materials may be reduced, thereby reducing the production cost of a final product. Contents of SCB (short chain branch) and LCB (long chain branch) in the polyolefin may be increased without separate feeding of comonomers, thereby producing high-quality linear low-density polyethylene.
    Type: Application
    Filed: December 11, 2015
    Publication date: February 1, 2018
    Inventors: Jin Young PARK, Yong Ho LEE, Seung Mi LEE, Ki Soo LEE, Eun Ji SHIN, Seok Pil SA, Seul Ki IM
  • METHOD FOR OLEFIN OLIGOMERIZATION
    Publication number: 20180009727
    Abstract: The present invention relates to a method for olefin oligomerization and comprising i) injecting an olefin monomer and a solvent into a continuous stirred tank reactor (CSTR); ii) injecting an oligomerization catalyst system comprising a ligand compound, a transition metal compound, and a co-catalyst into the continuous stirred tank reactor; and iii) performing a multimerization reaction of the olefin monomer, wherein a ratio of the flowing rates of the olefin monomer and the solvent is from 1:1 to 2:1. In the method for olefin oligomerization according to the present invention, high linear alpha-olefin selectivity may be attained even with a small amount of a solvent used by controlling reaction conditions during the multimerization reaction of olefin by a continuous reaction using a continuous stirred tank reactor.
    Type: Application
    Filed: February 5, 2016
    Publication date: January 11, 2018
    Inventors: Yoon Ki HONG, Yong Ho LEE, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seok Pil SA, Seul Ki IM
  • LIGAND COMPOUND, CATALYST SYSTEM FOR OLIGOMERIZATION, AND METHOD FOR OLEFIN OLIGOMERIZATION USING THE SAME (As Amended)
    Publication number: 20170369515
    Abstract: The present disclosure relates to a ligand compound, a catalyst system for oligomerization, and a method for olefin oligomerization using the same. The catalyst system for oligomerization using the ligand compound according to the present disclosure has excellent catalytic activity, exhibits high selectivity to 1-hexene and 1-octene, and greatly reduces the production of the by-products, thereby enabling efficient preparation of alpha-olefin.
    Type: Application
    Filed: January 26, 2016
    Publication date: December 28, 2017
    Inventors: Eun Ji SHIN, Yong Ho LEE, Jin Young PARK, Seok Pil SA, Ki Soo LEE, Seul Ki IM
  • Ligand compound, metallocene compound, and method for preparation of olefin-based polymer using the same
    Patent number: 9850326
    Abstract: The present invention relates to a novel ligand compound, a metallocene compound, and a method for preparing an olefin-based polymer using the same. The metallocene compound according to the present invention and a catalyst composition comprising the same have excellent polymerization activity, and yet, have excellent comonomer insertion capability, and thus, can be used to prepare olefin-based polymer having wide molecular weight distribution and the resulting excellent processability.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: December 26, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Bog Ki Hong, Yong Ho Lee, Chang Woan Han, Yi Young Choi, Ki Soo Lee
  • Ligand compound, catalyst system for olefin oligomerization, and olefin oligomerization method using the same
    Patent number: 9827561
    Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for olefin oligomerization using the same. The present ligand compound is a compound having a certain new structure and enables provision of a catalyst system for olefin oligomerization that can oligomerize ethylene with higher catalytic activity.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Seok Pil Sa, Yong Ho Lee, Ki Soo Lee, Eun Ji Shin
  • Metallocene compounds, catalyst compositions comprising the same, and method for preparing olefin polymers using the same
    Patent number: 9828403
    Abstract: The present invention relates to a transition metal compound that may exhibit high activity in olefin polymerization, and easily control the properties of synthesized olefin polymer such as a chemical structure, molecular weight distribution, a mechanical property, and the like, a catalyst composition comprising the same, and a method for olefin polymerization using the catalyst composition.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Min Lee, Ki Soo Lee, Heon Yong Kwon, Dae Sik Hong, Se Young Kim, Yong Ho Lee, Eun Young Shin, Sung Ho Park, Min Seok Cho, Kyung Jin Cho, Jin Young Park
  • Low-temperature cooling apparatus and superconducting quantum interference device sensor module
    Patent number: 9829546
    Abstract: Provided are a low-temperature cooling apparatus and a superconducting quantum interference device (SQUID) sensor module. The low-temperature cooling apparatus includes an outer container; an inner container disposed inside the outer container, the inner container including a neck portion having a first diameter and a body portion having a second diameter greater than the first diameter; an insert inserted into the neck portion of the inner container; and a plurality of SQUID sensor modules inserted into the body portion of the inner container. Each of the SQUID sensor modules is in the form of a fan-shaped pillar and is fixedly coupled with an inner bottom plate of the inner container.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: November 28, 2017
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Kwon-Kyu Yu, Yong-Ho Lee, Hyukchan Kwon, Jin-Mok Kim, Kiwoong Kim, Sang-Kil Lee
  • PARASITIC ELEMENT CONTROL METHOD AND APPARATUS FOR SINGLE RADIO FREQUENCY (RF) CHAIN-BASED ANTENNA ARRAY
    Publication number: 20170338555
    Abstract: Parasitic element control apparatus and method for a single radio frequency (RF) chain-based antenna array. The apparatus includes an arranger configured to arrange antenna elements, each including a single active element and a plurality of parasitic elements, and generate an antenna structure, a designer configured to design a control parameter for controlling the parasitic elements based on the antenna structure, and an adjuster configured to adjust the parasitic elements based on the control parameter.
    Type: Application
    Filed: May 12, 2017
    Publication date: November 23, 2017
    Inventors: Yong Ho LEE, Jung Hoon OH, Jung Nam LEE
  • Apparatus and method for indirectly cooling superconducting quantum interference device
    Patent number: 9823312
    Abstract: An apparatus and a method for indirectly cooling a superconducting quantum interference device (SQUID) are provided. The apparatus includes an outer container extending in a vertical direction; a metallic inner container inserted into the outer container to store a liquid coolant, the metal inner container including a top plate; a SQUID sensor module disposed between a bottom surface of the outer container and a bottom surface of the inner container; a heat transfer pillar adapted to cool the SQUID sensor module, the heat transfer pillar having one end connected to the bottom surface of the inner container and the other end directly or indirectly connected to the SQUID sensor module; a magnetic shield part formed of a superconductor covering a top surface of the SQUID sensor module; and a heat conduction plate being in thermal contact with the other end of the heat transfer pillar.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: November 21, 2017
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Kwon-Kyu Yu, Yong-Ho Lee, Kiwoong Kim, Hyukchan Kwon, Jin-Mok Kim, Sang-Kil Lee
  • LIGAND COMPOUND, ORGANIC CHROMIUM COMPOUND, CATALYST SYSTEM FOR OLIGOMERIZATION OF OLEFINS, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20170312738
    Abstract: The present invention relates to a ligand compound, a catalyst system for oligomerization of olefins including the ligand compound and the organic chromium compound, and a method for oligomerizing olefins using the same. The catalyst system for olefin oligomerization according to the present invention invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thereby enabling more efficient production of alpha-olefins.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 2, 2017
    Inventors: Yong Ho LEE, Eun Ji SHIN, Jin Young PARK, Seok Pil SA, Ki Soo LEE
  • DEACTIVATOR AND METHOD FOR DECREASING BY-PRODUCTS IN OLEFIN OLIGOMERIZATION USING THE SAME
    Publication number: 20170305811
    Abstract: The method for oligomerizing olefin according to the present disclosure is a method for oligomerizing olefin using an oligomerization catalyst system and includes deteriorating the activity of the oligomerization catalyst system by injecting a deactivator in a latter part of a multimerization reaction of olefin. The deactivator may include an additive for polymer containing at least one functional group selected from the group consisting of a hydroxyl group, an amine group and an amide group. According to the oligomerizing method, the isomer of 1-hexene and/or 1-octene and alpha-olefins with C10 to C40 may be decreased via the restraint of the additional side reaction of a product. Since the deactivator is an additive for enhancing the physical properties of a polymer, a separating process thereof is not required, thereby improving economic feasibility and productivity.
    Type: Application
    Filed: February 2, 2016
    Publication date: October 26, 2017
    Inventors: Eun Ji SHIN, Yong Ho LEE, Seul Ki IM, Ki Soo LEE, Jin Young PARK, Seok Pil SA
  • METHOD FOR OLIGOMERIZING OLEFIN (AS AMENDED)
    Publication number: 20170267603
    Abstract: The present specification relates to an olefin oligomerization method and specifically to an olefin oligomerization method comprising the step of subjecting an olefin to a multimerization reaction by controlling a reaction temperature such that the weight ratio of 1-hexene to 1-octene within a product comprising 1-hexene and 1-octene has a predetermined value, in the presence of an oligomerization catalyst system comprising a ligand compound, a transition metal compound, and a cocatalyst, wherein the predetermined value for the weight ratio of 1-hexene to 1-octene within the product is selected in a range of 1:0.5 to 1:7. By the method, 1-hexene and 1-octene can be produced in a desired ratio.
    Type: Application
    Filed: February 2, 2016
    Publication date: September 21, 2017
    Inventors: Seul Ki IM, Yong Ho LEE, Eun Ji SHIN, Jin Young PARK, Seok Pil SA, Ki Soo LEE
  • LIGAND COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20170260305
    Abstract: The present invention relates to a compound represented by the chemical formula 1, a catalyst system for olefin oligomerization comprising the same, and a method for oligomerizign olefins using the same, and the catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity as well as high selectivity for 1-hexene or 1-octene, thereby enabling more efficient preparation of alpha-olefins.
    Type: Application
    Filed: September 1, 2016
    Publication date: September 14, 2017
    Inventors: Yong Ho LEE, Seul Ki IM, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seok Pil SA, Yoon Ki HONG
  • Object discrimination method using ultra-low magnetic field nuclear magnetic resonance and an object discrimination apparatus of the same
    Patent number: 9759793
    Abstract: Provided are an object discrimination method and an object discrimination apparatus using an ultra-low magnetic field nuclear magnetic resonance (NMR). The method includes measuring the respective spin-lattice relaxation times at a plurality of strengths of prepolarization magnetic fields with respect to a measurement target and classifying the measurement target using the spin-lattice relaxation times.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: September 12, 2017
    Assignee: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE
    Inventors: Kiwoong Kim, Chan-Seok Kang, Seong-Joo Lee, Yong-ho Lee, Kwon-Kyu Yu
  • Ligand compound, organic chromium compound, catalyst system for ethylene oligomerization, preparation method thereof, and ethylene oligomerization method using the same
    Patent number: 9731282
    Abstract: The present invention relates to a ligand compound, an organic chromium compound, a catalyst system for ethylene oligomerization, a preparation method thereof, and an ethylene oligomerization method using the same. The catalyst system for ethylene oligomerization according to the present invention is used to prepare a low-density polyethylene in one reactor by using a small amount of comonomers such as alpha-olefin or by using only ethylene without comonomers, because it maintains high catalytic activity and high alpha-olefin selectivity even though supported on a support.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: August 15, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Min-Seok Cho, Yong-Ho Lee, Seok-Pil Sa, Heon-Yong Kwon, Kyung-Jin Cho, Se-Young Kim, Sung-Min Lee, Ki-Soo Lee, Kyoung-Chan Lim
  • Metallocene compound, a catalyst composition comprising the same, and a method of preparing an olefinic polymer by using the same
    Patent number: 9725472
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition including the same, and a method of preparing an olefinic polymer by using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used for producing olefinic polymers, have outstanding polymerizing ability, and can produce olefinic polymers of ultra high molecular weight. In particular, when the metallocene compound according to the present invention is employed, an olefinic polymer of ultra high molecular weight can be obtained because it shows high polymerization activity even when it is supported on a carrier and maintains high activity even in the presence of hydrogen because of its low hydrogen reactivity.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: August 8, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Eun Kyoung Song, Kyung Jin Cho, Ki Soo Lee, Se Young Kim, Sung Min Lee, Hyuck Ju Kwon, Yi Young Choi, Heon Yong Kwon, Min Seok Cho, Dae Sik Hong
  • Metallocene compound, a catalyst composition comprising the same, and a method of preparing an olefinic polymer by using the same
    Patent number: 9725533
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition including the same, and a method of preparing an olefinic polymer by using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used for producing olefinic polymers, have outstanding polymerizing ability, and can produce olefinic polymers of ultra high molecular weight. In particular, when the metallocene compound according to the present invention is employed, an olefinic polymer of ultra high molecular weight can be obtained because it shows high polymerization activity even when it is supported on a carrier and maintains high activity even in the presence of hydrogen because of its low hydrogen reactivity.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: August 8, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Eun Kyoung Song, Kyung Jin Cho, Ki Soo Lee, Se Young Kim, Sung Min Lee, Hyuck Ju Kwon, Yi Young Choi, Heon Yong Kwon, Min Seok Cho, Dae Sik Hong