Patents by Inventor Seung-Hwan Jung

Seung-Hwan Jung 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).

  • Publication number: 20240363328
    Abstract: Provided is a method and an apparatus for dry-cleaning an aluminum nitride (AlN) heater for semiconductor fabrication equipment, which may efficiently remove fluorine-containing contaminants generated on the AlN heater during semiconductor fabrication processes, and especially, may effectively and simultaneously remove organic, inorganic metallic, and inorganic contaminants. The method for dry-cleaning an AlN heater for semiconductor fabrication equipment includes steps of: determining a laser to be used for the AlN heater; determining laser control factors required for cleaning the AlN heater with respect to the laser to be used determined in the step of determining the laser to be used; and cleaning the AlN heater by laser irradiation based on the laser control factors determined in the step of determining the laser control factors.
    Type: Application
    Filed: April 16, 2024
    Publication date: October 31, 2024
    Applicant: WONIK QNC Corporation
    Inventors: Eun Young CHOI, Sang Hyun CHO, Seung Jin JUNG, Joo Hee JANG, So Young CHOI, Dong Ho SHIN, Jong Hwan MUN, Min Seob JUNG
  • Patent number: 12098892
    Abstract: In an embodiment a method for preparing a laminate includes forming a cured film by coating a source material composition including a polymer for a base layer and an inorganic particle for forming a pore, obtaining a porous base layer having a spherical pore derived from the inorganic particle by removing the inorganic particle from the cured film through an etching process and forming a coating layer, which has a repeated pattern, on a surface of the porous base layer.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: September 24, 2024
    Assignees: Hyundai Motor Company, Kia Corporation, Seoul National University R&DB Foundation
    Inventors: Min Jae Lee, Byung Wook Kim, Seung Hwan Ko, Jin Woo Lee, Yeong Ju Jung
  • Publication number: 20240306697
    Abstract: A tobacco material includes a core including a first tobacco mixture, and a shell surrounding at least a portion of the core and including a second tobacco mixture, wherein the first tobacco mixture includes first tobacco particles and a flavor substance, the second tobacco mixture includes second tobacco particles, and the shell has a surface roughness (Ra) of about 5.0 to about 10.0.
    Type: Application
    Filed: March 31, 2022
    Publication date: September 19, 2024
    Applicant: KT&G CORPORATION
    Inventors: Seok Su JANG, Sun Hwan JUNG, Hyeon Tae KIM, Jun Won SHIN, Dae Nam HAN, Yong Hwan KIM, Sung Wook YOON, Seung Won LEE
  • Publication number: 20240304826
    Abstract: A highly durable electrolyte membrane using cerium oxide supported with an alloy catalyst that is a hydrogen-oxygen reaction catalyst for improving chemical durability of an electrolyte membrane increases durability of a membrane-electrode assembly including the same and decreases the manufacturing cost thereof.
    Type: Application
    Filed: November 20, 2023
    Publication date: September 12, 2024
    Inventors: In Yu Park, Jong Kil Oh, Woo Chul Jung, Seung Hyun Kim, Dong Hwan Oh
  • Publication number: 20240287223
    Abstract: A ligand compound represented by the following Formula 1, which shows high catalyst activity and high selectivity to 1-hexene and 1-octene, and may perform ethylene oligomerization with excellent efficiency, an organochromium compound, a catalyst composition comprising the organochromium compound and a method for oligomerizing ethylene using the same, are described: wherein all the variables are described herein.
    Type: Application
    Filed: March 3, 2023
    Publication date: August 29, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Seok Pil Sa, Seok Sun Kim, Tae Hee Kim, Seung Hwan Jung, Eun Ji Shin, Yeon Ho Cho, Won Taeck Lim, Hee Jeong Kim
  • Patent number: 12037477
    Abstract: Provided is a near-infrared ray absorbing article. A near-infrared ray absorbing article of the present invention is capable of preventing a decrease in visible transmittance and near-infrared absorption due to the interaction between a plurality of organic materials forming light-absorbing layers. In addition, the near-infrared ray absorbing article of the present invention has the advantage of being able to be thinner. In addition, the near-infrared ray absorbing article of the present invention has the advantage of excellent mechanical properties such as strength and heat resistance.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: July 16, 2024
    Assignee: LMS CO., LTD.
    Inventors: Sung Hwan Moon, Seung Man Han, Seon Ho Yang, Tae Kwang Park, Joon Ho Jung, Bo Chul Kang, Hee Kyeong Kim, Seong Don Hwang, Seong Yong Yoon, Ho Seong Na, Ji Tae Kim
  • Patent number: 11795183
    Abstract: A transition metal compound having a novel structure is disclosed herein. The transition metal compound can have improved structural stability by forming a stable coordination site of a transition metal through controlling a bond angle formed by the amido group of a phenylene bridge, a cyclopentadienyl ring, and a transition metal. The transition metal compound has excellent copolymerization properties and may produce an olefin polymer having a high molecular weight in a ultra low density region.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: October 24, 2023
    Inventors: Young Shil Do, A Rim Kim, Yun Jin Lee, Ki Soo Lee, Choong Hoon Lee, Seung Hwan Jung
  • Patent number: 11773578
    Abstract: A method for selecting a cleaning course includes one or more cleaning factors and any one of the one or more emotional factors, in which a cleaning weight of the one or more cleaning factors is preset for each of the one or more emotional factors.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 3, 2023
    Assignee: COWAY CO., LTD.
    Inventors: Seung Hwan Jung, Ga Young Kim
  • Patent number: 11718737
    Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups to show excellent physical properties, and a method for preparing the same.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: August 8, 2023
    Inventors: Jung Ho Jun, Seung Hwan Jung, Jin Sam Gong, Rae Keun Gwak, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
  • Patent number: 11718693
    Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, having minimized number of unsaturated functional groups, and having uniform crystallinity, thereby showing excellent physical properties, and a method for preparing the same.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: August 8, 2023
    Inventors: Rae Keun Gwak, Seung Hwan Jung, Jin Sam Gong, Jung Ho Jun, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
  • Patent number: 11618759
    Abstract: The present invention provides a novel ligand compound, a transition metal compound and a catalyst composition including the same.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: April 4, 2023
    Inventors: Ki Won Han, A Rim Kim, Seung Hwan Jung
  • Patent number: 11505631
    Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, and minimized number of unsaturated functional groups, and in which a comonomer is uniformly present to show excellent physical properties, and a method for preparing the same.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: November 22, 2022
    Inventors: Jin Sam Gong, Seung Hwan Jung, Jung Ho Jun, Rae Keun Gwak, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
  • Publication number: 20220364347
    Abstract: A method for selecting a cleaning course is provided. The method for selecting a cleaning course according to an embodiment of the present disclosure is a method for selecting a cleaning course including one or more cleaning factors and any one of the one or more emotional factors, in which a cleaning weight of the one or more cleaning factors is preset for each of the one or more emotional factors.
    Type: Application
    Filed: September 9, 2019
    Publication date: November 17, 2022
    Applicant: COWAY CO., LTD.
    Inventors: Seung Hwan JUNG, Ga Young KIM
  • Publication number: 20220275113
    Abstract: The present invention relates to a method for purifying a polyalkylaluminoxane-containing solution using a hydroxy group-containing compound, a method for producing a catalyst composition using the method, a catalyst composition produced by the production method, and a method for producing an olefin polymer using the catalyst composition.
    Type: Application
    Filed: September 29, 2020
    Publication date: September 1, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Yoon Hee Cho, Ue Ryung Seo, Seung Hyo Kim, Seung Hwan Jung, A Rim Kim, Ki Won Han, Hyo Jung Han
  • Publication number: 20220144773
    Abstract: The present invention provides a novel ligand compound, a transition metal compound and a catalyst composition including the same.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Ki Won Han, A Rim Kim, Seung Hwan Jung
  • Patent number: 11274113
    Abstract: The present invention provides a novel ligand compound, a transition metal compound and a catalyst composition including the same.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: March 15, 2022
    Inventors: Ki Won Han, A Rim Kim, Seung Hwan Jung
  • Publication number: 20220024951
    Abstract: A novel transition metal compound and a catalyst composition including same are disclosed herein. In some embodiments, the transition metal compound is represented by formula 1 disclosed herein. In some embodiments, the catalyst composition comprises the transition metal compound represented by formula 1. The catalyst composition may be useful for preparing an olefin-based polymer having a high molecular weight in a low density region, and may be useful for preparing an olefin-based polymer having a low melting index (MI) in high temperature conditions and a high molecular weight.
    Type: Application
    Filed: November 22, 2019
    Publication date: January 27, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jae Kwon Jang, Seung Hyo Kim, Seung Hwan Jung, A Rim Kim
  • Patent number: 11225495
    Abstract: A transition metal compound represented by Chemical Formula 1 and a method for preparing the same, catalyst compositions including the same, and olefin-based polymers prepared from the same are disclosed herein. The transition metal catalyst has excellent structural stability together with excellent catalytic activity and can exhibit excellent copolymerizability even at a high temperature. In an embodiment, an olefin-based polymer prepared using a catalyst composition including the transition metal compound has a density of 0.91 g/cc or less.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: January 18, 2022
    Inventors: Young Shil Do, Jin Sam Gong, Eun Jung Lee, Choong Hoon Lee, Seung Hwan Jung, Yoon Hee Cho, Hyo Jung Han
  • Publication number: 20210340164
    Abstract: A transition metal compound having a novel structure is disclosed herein. The transition metal compound can have improved structural stability by forming a stable coordination site of a transition metal through controlling a bond angle formed by the amido group of a phenylene bridge, a cyclopentadienyl ring, and a transition metal. The transition metal compound has excellent copolymerization properties and may produce an olefin polymer having a high molecular weight in a ultra low density region.
    Type: Application
    Filed: December 10, 2019
    Publication date: November 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Young Shil Do, A Rim Kim, Yun Jin Lee, Ki Soo Lee, Choong Hoon Lee, Seung Hwan Jung
  • Patent number: 11059917
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density. In addition, an olefin polymer which is polymerized using the catalyst composition including the transition metal compound may be used for the manufacture of a product having low melt index (MI) and high molecular weight.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: July 13, 2021
    Inventors: Dong Eun Kim, Yun Jin Lee, Jung Ho Jun, Seung Hwan Jung, Jin Sam Gong, Choong Hoon Lee