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).

  • Magnetoencephalography measuring apparatus
    Patent number: 10426363
    Abstract: A magnetoencephalography (MEG) measuring apparatus and an MEG measuring method. The MEG measuring apparatus includes a superconducting helmet having an inward brim, a sensor-equipped helmet disposed inside the superconducting helmet, a pick-up coil disposed inside the sensor-equipped helmet, and a superconducting quantum interference device (SQUID) sensor mounted on the sensor-equipped helmet and connected to the pick-up coil.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: October 1, 2019
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Kwon-Kyu Yu, Yong-Ho Lee, Kiwoong Kim, Jin-Mok Kim, Hyukchan Kwon, Sang-Kil Lee
  • Deactivator and method for decreasing by-products in olefin oligomerization using the same
    Patent number: 10413893
    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: Grant
    Filed: February 2, 2016
    Date of Patent: September 17, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Eun Ji Shin, Yong Ho Lee, Seul Ki Im, Ki Soo Lee, Jin Young Park, Seok Pil Sa
  • Ligand compound, organic chromium compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same thereof
    Patent number: 10392451
    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: Grant
    Filed: December 21, 2015
    Date of Patent: August 27, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Seok Pil Sa, Yong Ho Lee, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seul Ki Im
  • Olefin-based polymer with excellent processability
    Patent number: 10344102
    Abstract: Provided is an olefin-based polymer with excellent processability. The olefin-based polymer according to the present invention has a high molecular weight and a broad molecular weight distribution to show excellent processability and improved mechanical properties, thereby being usefully applied according to the intended use.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: July 9, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Joong Soo Kim, Yu Taek Sung, Ki Soo Lee, Dae Sik Hong, Ki Heon Song, Eun Kyoung Song, Heon Yong Kwon, Yong Ho Lee, Dong Hoon Jeong, Soon Ho Sun, Sun Mi Kim
  • Ligand compound, catalyst system for oligomerization, and method for olefin oligomerization using the same
    Patent number: 10344044
    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: Grant
    Filed: January 26, 2016
    Date of Patent: July 9, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Eun Ji Shin, Yong Ho Lee, Jin Young Park, Seok Pil Sa, Ki Soo Lee, Seul Ki Im
  • Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
    Patent number: 10287373
    Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The ligand compound according to the present invention has a structure in which a substituent is substituted in the trans form, and thereby when used for olefin oligomerization, the activity of the catalyst used and the selectivity of 1-hexene and 1-octene can be increased.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 14, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jin Young Park, Yong Ho Lee, Eun Ji Shin, Seok Pil Sa, Ki Soo Lee, Seul Ki Im, Yoon Ki Hong
  • LIGAND COMPOUND, ORGANIC CHROMIUM COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFIN USING SAME
    Publication number: 20190077816
    Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization and a method for oligomerizing an olefin using same. The catalyst system for olefin oligomerization according to the present invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thus enabling more efficient preparation of alpha-olefins.
    Type: Application
    Filed: November 25, 2016
    Publication date: March 14, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Seul Ki Im, Yong Ho Lee, Ki Soo Lee, Eun Ji Shin, Jin Young Park, Seok Pil Sa, Yoon Ki Hong
  • Catalyst system for olefin oligomerization reaction, and method for olefin oligomerization using the same
    Patent number: 10207963
    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: Grant
    Filed: December 24, 2015
    Date of Patent: February 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jin Young Park, Yong Ho Lee, Ki Soo Lee, Eun Ji Shin, Seok Pil Sa, Seul Ki Im
  • Hybrid supported catalyst system and method of preparing polyolefin using the same
    Patent number: 10189920
    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: Grant
    Filed: January 27, 2016
    Date of Patent: January 29, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Seung Mi Lee, Yong Ho Lee, Jin Young Park, Ki Soo Lee, Eun Ji Shin, Seok Pil Sa
  • 1-octene composition
    Patent number: 10179752
    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: March 30, 2018
    Date of Patent: January 15, 2019
    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
  • Method for oligomerization of olefins
    Patent number: 10173948
    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: Grant
    Filed: August 16, 2016
    Date of Patent: January 8, 2019
    Assignee: LG Chem, Ltd.
    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 OLIGOMERIZATION CATALYST SYSTEM AND OLIGOMERIZATION CATALYST SYSTEM PREPARED THEREBY
    Publication number: 20180339289
    Abstract: The present invention relates to a method for preparing an oligomerization catalyst system and the method comprises preparing a catalyst composition by mixing a PNP-based ligand compound and a transition metal compound, and mixing and activating a co-catalyst and the catalyst composition at a temperature from ?40 to 80° C. The oligomerization catalyst system prepared by the method may maintain the activity thereof during an oligomerization reaction at a high temperature, and the reaction temperature of oligomerization may be easily controlled. Various merits in processing may be obtained.
    Type: Application
    Filed: February 2, 2016
    Publication date: November 29, 2018
    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
    Patent number: 10131723
    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: Grant
    Filed: September 1, 2016
    Date of Patent: November 20, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Yong Ho Lee, Seul Ki Im, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seok Pil Sa, Yoon Ki Hong
  • LIGAND COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20180327528
    Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The ligand compound according to the present invention has a structure in which a substituent is substituted in the trans form, and thereby when used for olefin oligomerization, the activity of the catalyst used and the selectivity of 1-hexene and 1-octene can be increased.
    Type: Application
    Filed: October 21, 2016
    Publication date: November 15, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jin Young Park, Yong Ho Lee, Eun Ji Shin, Seok Pil Sa, Ki Soo Lee, Seul Ki Im, Yoon Ki Hong
  • MEDICAL IMAGING APPARATUS AND METHOD OF GENERATING MEDICAL IMAGE
    Publication number: 20180303462
    Abstract: A medical imaging apparatus and a method of generating a medical image that are capable of generating a Doppler image by using a Doppler effect as well as an ultrasound image are disclosed. The method of generating a medical image includes: acquiring received signals; acquiring an ultrasound image and displaying the acquired ultrasound image; acquiring a Doppler signal corresponding to a sample volume that is set on the ultrasound image, based on the received signals; generating a Doppler image based on the Doppler signal and displaying the generated Doppler image; receiving a user input for moving a location of the sample volume; and suspending, if the user input is received, the displaying of the Doppler image and updating the ultrasound image.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 25, 2018
    Applicant: SAMSUNG MEDISON CO., LTD.
    Inventors: Su-myeong LEE, Yong-ho LEE
  • 1-octene composition
    Patent number: 10099971
    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: March 30, 2018
    Date of Patent: October 16, 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
  • Method for preparing olefin oligomers in the presence of a halogenated organic solvent and a catalyst comprising two diphosphino amine compounds
    Patent number: 10087123
    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: October 2, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Eun Ji Shin, Yong Ho Lee, Seok Pil Sa, Ki Soo Lee, Jin Young Park
  • Shielding apparatus, shielding method and demagnetizing for measuring magnetic field
    Patent number: 10060990
    Abstract: The present invention relates to a shield apparatus and a shield method for measuring a subtle magnetic field. More specifically, the present invention relates to a shield apparatus having a precise magnetic sensor therein, for shielding an external magnetic field in a subtle magnetic field measurement apparatus including a magnetic field generation apparatus for exciting a sample, the shield apparatus for measuring a subtle magnetic field, including: a shield wall provided with a high-conductivity metal layer of high conductivity being partitioned into a plurality of segments and having a high-frequency shield property and a closed high-permeability soft magnetic layer spaced apart from the high-conductivity metal layer by a predetermined distance, so as to seal a measurement space.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 28, 2018
    Assignee: Korea Research Institute of Standards and Science
    Inventors: Ki Woong Kim, Yong Ho Lee, Kwon Kyu Yu, Seong-Joo Lee
  • OLEFIN-BASED POLYMER WITH EXCELLENT PROCESSABILITY
    Publication number: 20180223009
    Abstract: Provided is an olefin-based polymer with excellent processability. The olefin-based polymer according to the present invention has a high molecular weight and a broad molecular weight distribution to show excellent processability and improved mechanical properties, thereby being usefully applied according to the intended use.
    Type: Application
    Filed: September 4, 2015
    Publication date: August 9, 2018
    Inventors: Joong Soo KIM, Yu Taek SUNG, Ki Soo LEE, Dae Sik HONG, Ki Heon SONG, Eun Kyoung SONG, Heon Yong KWON, Yong Ho LEE, Dong Hoon JEONG, Soon Ho SUN, Sun Mi KIM
  • 1-OCTENE COMPOSITION
    Publication number: 20180222816
    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