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).

  • 1-OCTENE COMPOSITION
    Publication number: 20180222815
    Abstract: The present invention relates to a 1-octene composition. The 1-octene composition according to the present invention is prepared by ethylene oligomerization and comprises a high content of 1-octene and monomers useful for copolymerization of 1-octene at the same time.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: Yong Ho LEE, Seok Pil SA, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seul Ki IM, Yoon Ki HONG
  • Method for preparing olefin oligomers in the presence of a halogenated organic solvent and a catalyst comprising two diphosphino amine compounds
    Patent number: 10035738
    Abstract: The present invention relates to a process for preparing an olefin oligomer including a step of contacting an olefin monomer with a composite catalyst in the presence of a halogenated organic solvent, wherein the composite catalyst includes: a transition metal compound; a cocatalyst; and an organic ligand including a diphosphonoamine compound in which two or more diphosphonoamines are combined via a polyvalent functional group.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: July 31, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Eun Ji Shin, Yong Ho Lee, Seok Pil Sa, Ki Soo Lee, Jin Young Park
  • Ultra-low-field nuclear-magnetic-resonance direct myocardial electrical activity detection method and ultra-low-field nuclear-magnetic-resonance device
    Patent number: 10028674
    Abstract: Provided are ultra-low-field nuclear-magnetic-resonance myocardial electrical activity detection method and an ultra-low-field nuclear-magnetic-resonance device. The ultra-low-field nuclear-magnetic-resonance device includes magnetic shielding room; a high-sensitivity magnetic field sensor disposed adjacent to a measurement target disposed inside the magnetic shielding room; and a bias magnetic field generating coil for providing an external measurement bias magnetic field, corresponding to a proton magnetic resonance frequency (nuclear magnetic resonance frequency) corresponding to a frequency of periodic myocardial activity of a lesion desired to be measured, to the measurement target. The high-sensitivity magnetic field sensor measures a magnetic resonance signal generated from the measurement target.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: July 24, 2018
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Kiwoong Kim, Yong-Ho Lee, Jin-Mok Kim, Hyukchan Kwon, Kwon Kyu Yu
  • Metallocene compound, catalyst composition including the same, and method of preparing olefin-based polymer using the same
    Patent number: 9994653
    Abstract: Provided are a novel metallocene compound, a catalyst composition including the same, and a method of preparing an olefin-based polymer using the same. The metallocene compound according to the present invention or the catalyst composition including the same may be used for the preparation of an olefin-based polymer, may have excellent polymerization ability, and may produce an olefin-based polymer having a high molecular weight. In particular, when the metallocene compound according to the present invention is employed, an olefin-based polymer having a high molecular weight may be polymerized because the metallocene compound shows high polymerization activity even when it is supported on a support and maintains high activity even in the presence of hydrogen because of its low hydrogen reactivity.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: June 12, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Kyung Jin Cho, Jin Young Park, Ki Soo Lee, Min Seok Cho, Se Young Kim, Sung Min Lee, Chang Woan Han
  • Metallocene compound, catalyst composition including the same, and method of preparing polyolefin using the same
    Patent number: 9994652
    Abstract: Provided are a novel metallocene compound, a catalyst composition including the same, and a method of preparing a polyolefin using the same. The metallocene compound according to the present invention and the catalyst composition including the same may be used for the preparation of a polyolefin, may have excellent polymerization ability, and may produce a polyolefin having an ultra-high molecular weight. In particular, when the metallocene compound according to the present invention is employed, an olefin-based polymer having an ultra-high molecular weight may be polymerized because the metallocene compound shows high polymerization activity even when it is supported on a support.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: June 12, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Jin Young Park, Yong Ho Lee, Kyung Jin Cho, Ki Soo Lee, Bog Ki Hong, Min Seok Cho, Dae Hwan Kim, Se Young Kim, Sung Min Lee, Chang Woan Han, Sung Ho Park
  • METHOD FOR OLIGOMERIZATION OF OLEFINS (AMENDED)
    Publication number: 20180155254
    Abstract: The present disclosure relates to a method for oligomerization of olefins. The method for oligomerization of olefins according to the present disclosure not only provides excellent catalytic activity and stable process operation, but also exhibits high selectivity to 1-hexene or 1-octene by using a catalyst system including an activity modifier.
    Type: Application
    Filed: August 16, 2016
    Publication date: June 7, 2018
    Inventors: Seul Ki IM, Yong Ho LEE, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seok Pil SA, Yoon Ki HONG
  • Method for preparing polyolefin and polyolefin prepared thereby
    Patent number: 9988469
    Abstract: The present invention relates to a method for preparing polyolefin that can easily and effectively prepare polyolefin having high molecular weight and various molecular weight distributions, which was difficult to prepare using the existing metallocene catalyst, and polyolefin prepared thereby. The method for preparing polyolefin comprises the step of polymerizing olefin monomers, in the presence of a metallocene supported catalyst wherein a metallocene compound having a specific chemical structure is supported in a carrier, and hydrogen gas.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: June 5, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Eun Kyoung Song, Heon Yong Kwon, Hyuck Ju Kwon, Yong Ho Lee, Yi Young Choi, Dae Sik Hong, Ki Soo Lee, Kyung Jin Cho
  • Method of preparing polyolefin, and polyolefin prepared thereby
    Patent number: 9975969
    Abstract: A method of preparing a polyolefin, wherein the method is used to more effectively prepare a polyolefin which has a high molecular weight and multimodal molecular weight distribution, thereby being preferably used for blow-molding or the like, and a polyolefin prepared thereby, are provided.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 22, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Kyung Jin Cho, Yong Ho Lee, Ki Soo Lee, Min Seok Cho, Se Young Kim, Sung Min Lee, Jin Young Park
  • 1-octene composition
    Patent number: 9969659
    Abstract: The present invention relates to a 1-octene composition. The 1-octene composition according to the present invention is prepared by ethylene oligomerization and comprises a high content of 1-octene and monomers useful for copolymerization of 1-octene at the same time.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: May 15, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Seok Pil Sa, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seul Ki Im, Yoon Ki Hong
  • CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION AND METHOD FOR OLEFIN OLIGOMERIZATION USING THE SAME
    Publication number: 20180127333
    Abstract: The present invention relates to a catalyst system for olefin oligomerization and a method for olefin oligomerization, and more specifically, a catalyst system for olefin oligomerization and a method for olefin oligomerization that have more improved supporting efficiency due to a ligand compound capable of functioning as a tether to a support, and thus, exhibit high activity in the olefin oligomerization even with smaller amounts of catalyst composition and cocatalyst, thus enabling more efficient preparation of alpha-olefins.
    Type: Application
    Filed: January 11, 2016
    Publication date: May 10, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Yong Ho LEE, Eun Ji SHIN, Jin Young PARK, Ki Soo LEE, Seok Pil SA, Seul Ki IM
  • Transition metal compound, catalyst composition comprising the same, and method of preparing polyolefin
    Patent number: 9963527
    Abstract: The present invention relates to a novel transition metal compound, a catalyst composition comprising the transition metal compound, and a method of preparing polyolefin using the catalyst composition.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: May 8, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Bog Ki Hong, Yong Ho Lee, Chang Woan Han, Yi Young Choi, Ki Soo Lee
  • CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION REACTION, AND METHOD FOR OLEFIN OLIGOMERIZATION USING THE SAME
    Publication number: 20180094085
    Abstract: Provided are a catalyst system for olefin oligomerization reaction and a method for olefin oligomerization, and more particularly, a catalyst system for olefin oligomerization reaction and a method for olefin oligomerization, which enable more efficient preparation of alpha-olefin, because a catalytic active ingredient is supported on a support, thereby exhibiting high activity in olefin oligomerization reaction even by using smaller amounts of a catalyst composition and a cocatalyst.
    Type: Application
    Filed: December 24, 2015
    Publication date: April 5, 2018
    Inventors: Jin Young PARK, Yong Ho LEE, Ki Soo LEE, Eun Ji SHIN, Seok Pil SA, Seul Ki IM
  • LIGAND COMPOUND, ORGANIC CHROMIUM COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20180086860
    Abstract: The present invention relates to a ligand compound, catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The catalyst system for olefin oligomerization according to the present invention exhibit selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thus enabling more efficient preparation of alpha-olefins.
    Type: Application
    Filed: December 21, 2015
    Publication date: March 29, 2018
    Inventors: Seok Pil SA, Yong Ho LEE, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seul Ki IM
  • Hybrid supported metallocene catalyst
    Patent number: 9926395
    Abstract: The present invention relates to a hybrid supported metallocene catalyst. More specifically, the present invention relates to a hybrid supported metallocene catalyst using two or more different types or more of metallocene compounds, among which 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 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: March 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
  • Biomagnetic resonance device and measuring method therefor
    Patent number: 9921280
    Abstract: Provided are an ultra-low-field nuclear magnetic resonance device and an ultra-low-field nuclear magnetic resonance measuring method. The method includes applying a first measurement bias magnetic field corresponding to an excitation frequency of a coherent biomagnetic field generated in association with the electrophysiological activity of human body organs, applying a second measurement bias magnetic field having the same direction as the first measurement bias magnetic field and having a different magnitude than the first measurement bias magnetic field, and measuring a magnetic resonance signal generated in the human body by using magnetic field measuring means.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: March 20, 2018
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Kiwoong Kim, Yong-ho Lee, Seong-Joo Lee, Kwon-Kyu Yu
  • HYBRID SUPPORTED CATALYST SYSTEM AND METHOD OF PREPARING POLYOLEFIN USING THE SAME
    Publication number: 20180072827
    Abstract: Provided are a hybrid supported catalyst system and a method of preparing a polyolefin using the same. The hybrid supported catalyst system according to the present invention may be used to perform oligomerization and copolymerization of olefin monomers 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.
    Type: Application
    Filed: January 27, 2016
    Publication date: March 15, 2018
    Inventors: Seung Mi LEE, Yong Ho LEE, Jin Young PARK, Ki Soo LEE, Eun Ji SHIN, Seok Pil SA
  • 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
  • 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
  • Apparatus and method for canceling magnetic fields
    Patent number: 9903927
    Abstract: Provided are an apparatus and a method for canceling magnetic fields. The apparatus includes a magnetic field canceling coil disposed adjacent to an inner wall of a magnetic shield room to surround the entire inner space or a portion of an inner space of the magnetic shield room; and a magnetic field canceling coil driver to supply current to the magnetic field canceling coil. The magnetic field canceling coil cancels a prepolarization magnetic field established on the wall of the magnetic shield room by a prepolarization coil disposed in the center of the magnetic shield room to minimize magnetic interference caused by the magnetic shield room.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 27, 2018
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Seong-min Hwang, Kiwoong Kim, Jin Mok Kim, Yong-Ho Lee, Chan Seok Kang, Kwon Kyu Yu, Seong-Joo Lee
  • 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