Patents by Inventor Wan-Jae Myeong

Wan-Jae Myeong 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).

  • Patent number: 11987659
    Abstract: Provided are a hydrogenation reaction catalyst and a preparation method therefor, and more particularly, to a hydrogenation reaction catalyst including sulfur as a promoter, thereby selectively hydrogenating an olefin by changing a relative hydrogenation rate of the olefin and an aromatic group during a hydrogenation reaction of an unsaturated hydrocarbon compound containing an aromatic group, and a preparation method therefor.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 21, 2024
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Bong Sik Jeon, Wan Jae Myeong, Woo Jin Park, Eui Geun Jung
  • Patent number: 11969711
    Abstract: The present invention relates to a carbon-based precious metal-transition metal composite catalyst and a preparation method therefor, and more particularly, to a catalyst synthesis method in which, when preparing a high-content precious metal-transition metal composite catalyst, a catalyst having uniform particles and composition can be prepared, and cyclohexane dimethanol (CHDM) is efficiently produced by the hydrogenation reaction of cyclohexane dicarboxylic acid (CHDA) in an aqueous solution.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: April 30, 2024
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Jeong Kwon Kim, Sun Woo Yook, Bong Sik Jeon, Wan Jae Myeong
  • Patent number: 11925920
    Abstract: The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 12, 2024
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Eung Gyu Kim, Won Yong Kim, Jeong Hwan Chun, Young Jin Cho, Joung Woo Han, Hyo Suk Kim, Wan Jae Myeong, Ki Taeg Jung
  • Patent number: 11912653
    Abstract: Provided are a noble metal-transition metal complex catalyst supported on a carbon-coated silica-alumina support and a preparation method therefor, the catalyst being capable of obtaining a fast reaction rate and catalyst stability, as compared to a conventional catalyst, when cyclohexane dimethanol (CHDM) production is carried out by a cyclohexane dicarboxylic acid (CHDA) hydrogenation reaction in an aqueous solution by using a carbon-coated supported catalyst.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: February 27, 2024
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Jeong Kwon Kim, Wan Jae Myeong, Sun Woo Yook, Bong Sik Jeon
  • Patent number: 11878286
    Abstract: The present invention relates to a catalyst for a hydrocarbon resin hydrogenation reaction and a preparation method for the same, wherein the catalyst is a nickel powder catalyst including nickel (Ni), copper (Cu), and sulfur (S), and more particularly, a nickel-based catalyst for a hydrogenation reaction, which is added to a hydrogenation reaction in order to improve the color of the hydrocarbon resin. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction, includes 40-80 parts by weight of nickel, 0.01-5 parts by weight of copper, 1-10 parts by weight of sulfur, and 10-60 parts by weight of a silica support based on 100 parts by weight of the entire dried catalyst including a support. Therefore, the catalyst can improve the quality of hydrocarbon resin. Furthermore, the catalyst can provide colorless, odorless, and transparent water-white hydrocarbon resin with improved thermal stability by removing unsaturated bonds in the hydrocarbon resin.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: January 23, 2024
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Woo Jin Park, Yong Hee Lee, Bong Sik Jeon, Eui Geun Jung, Wan Jae Myeong
  • Patent number: 11517880
    Abstract: Provided are a carbon-based noble metal-transition metal composite catalyst enabling high selective conversion of a carboxylic acid functional group into an alcohol functional group by pre-treating a carbon carrier including a predetermined ratio or more of mesopores, and a production method therefor.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: December 6, 2022
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Sun Woo Yook, Jeong Kwon Kim, Wan Jae Myeong, Bong Sik Jeon
  • Patent number: 11391684
    Abstract: The present disclosure relates to a method for measuring aromatic contents in a hydrocarbon solution. More specifically, it relates to a measurement method capable of quickly and accurately checking aromatic contents in a compound, particularly in a hydrocarbon, in a solution state without a high-temperature drying process.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 19, 2022
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Yong Hee Lee, Wan Jae Myeong, Woo Jin Park, Bong Sik Jeon, Eui Geun Jung
  • Publication number: 20220072518
    Abstract: The present invention relates to a method for regenerating a dicarboxylic acid or carboxylic acid hydrogenation catalyst, and more particularly, to a method for regenerating a hydrogenation catalyst to be used in a reaction of converting a dicarboxylic acid group into a diol group. The present invention provides an effect of regenerating a catalyst deactivated by the deposition of esters to be produced in a reaction of converting a dicarboxylic acid group into a diol group.
    Type: Application
    Filed: December 30, 2019
    Publication date: March 10, 2022
    Inventors: Sun Woo YOOK, Jeong Kwon KIM, Bong Sik JEON, Wan Jae MYEONG
  • Publication number: 20220062868
    Abstract: The present invention relates to a carbon-based precious metal-transition metal composite catalyst and a preparation method therefor, and more particularly, to a catalyst synthesis method in which, when preparing a high-content precious metal-transition metal composite catalyst, a catalyst having uniform particles and composition can be prepared, and cyclohexane dimethanol (CHDM) is efficiently produced by the hydrogenation reaction of cyclohexane dicarboxylic acid (CHDA) in an aqueous solution.
    Type: Application
    Filed: December 10, 2019
    Publication date: March 3, 2022
    Inventors: Jeong Kwon KIM, Sun Woo YOOK, Bong Sik JEON, Wan Jae MYEONG
  • Publication number: 20220023842
    Abstract: The present invention relates to a catalyst for a hydrocarbon resin hydrogenation reaction and a preparation method for the same, wherein the catalyst is a nickel powder catalyst including nickel (Ni), copper (Cu), and sulfur (S), and more particularly, a nickel-based catalyst for a hydrogenation reaction, which is added to a hydrogenation reaction in order to improve the color of the hydrocarbon resin. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction, includes 40-80 parts by weight of nickel, 0.01-5 parts by weight of copper, 1-10 parts by weight of sulfur, and 10-60 parts by weight of a silica support based on 100 parts by weight of the entire dried catalyst including a support. Therefore, the catalyst can improve the quality of hydrocarbon resin. Furthermore, the catalyst can provide colorless, odorless, and transparent water-white hydrocarbon resin with improved thermal stability by removing unsaturated bonds in the hydrocarbon resin.
    Type: Application
    Filed: October 28, 2019
    Publication date: January 27, 2022
    Inventors: Woo Jin PARK, Yong Hee LEE, Bong Sik JEON, Eui Geun JUNG, Wan Jae MYEONG
  • Publication number: 20220001360
    Abstract: The present invention can facilitate the reduction of nickel by using copper as an accelerator when a hydrogenation catalyst including nickel is produced by using a deposition-precipitation (DP) method. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction that includes 40-80 parts by weight of nickel as a catalyst active component, 0.01-5 parts by weight of copper as an accelerator, and 10-30 parts by weight of a silica support based on 100 parts by weight of the entire catalyst. Therefore, although a high content of nickel is supported, the catalyst has a small crystal size of an activated metal and a high degree of dispersion and provides excellent hydrogenation activity.
    Type: Application
    Filed: October 29, 2019
    Publication date: January 6, 2022
    Inventors: Bong Sik JEON, Yong Hee LEE, Woo Jin PARk, Eui Geun JUNG, Wan Jae MYEONG, Joung Woo HAN
  • Publication number: 20210060534
    Abstract: Provided are a carbon-based noble metal-transition metal composite catalyst enabling high selective conversion of a carboxylic acid functional group into an alcohol functional group by pre-treating a carbon carrier including a predetermined ratio or more of mesopores, and a production method therefor.
    Type: Application
    Filed: December 27, 2018
    Publication date: March 4, 2021
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Sun Woo YOOK, Jeong Kwon KIM, Wan Jae MYEONG, Bong Sik JEON
  • Publication number: 20210061742
    Abstract: Provided are a noble metal-transition metal complex catalyst supported on a carbon-coated silica-alumina support and a preparation method therefor, the catalyst being capable of obtaining a fast reaction rate and catalyst stability, as compared to a conventional catalyst, when cyclohexane dimethanol (CHDM) production is carried out by a cyclohexane dicarboxylic acid (CHDA) hydrogenation reaction in an aqueous solution by using a carbon-coated supported catalyst.
    Type: Application
    Filed: December 26, 2018
    Publication date: March 4, 2021
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Jeong Kwon KIM, Wan Jae MYEONG, Sun Woo YOOK, Bong Sik JEON
  • Publication number: 20210002403
    Abstract: Provided are a hydrogenation reaction catalyst and a preparation method therefor, and more particularly, to a hydrogenation reaction catalyst including sulfur as a promoter, thereby selectively hydrogenating an olefin by changing a relative hydrogenation rate of the olefin and an aromatic group during a hydrogenation reaction of an unsaturated hydrocarbon compound containing an aromatic group, and a preparation method therefor.
    Type: Application
    Filed: December 20, 2018
    Publication date: January 7, 2021
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Bong Sik JEON, Wan Jae MYEONG, Woo Jin PARK, Eui Geun JUNG
  • Publication number: 20200371053
    Abstract: The present disclosure relates to a method for measuring aromatic contents in a hydrocarbon solution. More specifically, it relates to a measurement method capable of quickly and accurately checking aromatic contents in a compound, particularly in a hydrocarbon, in a solution state without a high-temperature drying process.
    Type: Application
    Filed: November 29, 2018
    Publication date: November 26, 2020
    Inventors: Yong Hee LEE, Wan Jae MYEONG, Woo Jin PARK, Bong Sik JEON, Eui Geun JUNG
  • Publication number: 20200316564
    Abstract: The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.
    Type: Application
    Filed: October 16, 2018
    Publication date: October 8, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Eung Gyu KIM, Won Yong KIM, Jeong Hwan CHUN, Young Jin CHO, Joung Woo HAN, Hyo Suk KIM, Wan Jae MYEONG, Ki Taeg JUNG
  • Patent number: 9861712
    Abstract: Provided are a preparation method of iron oxide-based paramagnetic or pseudo-paramagnetic nanoparticles, iron oxide-based nanoparticles prepared by the same, and a T1 contrast agent including the same. More particularly, the disclosure describes a method for preparation of iron oxide nanoparticles having a extremely small and uniform size of 4 nm or less based on thermal decomposition of iron oleate complex, iron oxide-based paramagnetic or pseudo-paramagnetic nanoparticles prepared by the same, and a T1 contrast agent including iron oxide-based paramagnetic or pseudo-paramagnetic nanoparticles.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: January 9, 2018
    Assignee: Hanwha Chemical Corporation
    Inventors: Taeg Hwan Hyeon, Byung Hyo Kim, No Hyun Lee, Eung Gyu Kim, Bong Sik Jeon, Eun Byul Kwon, Ju Young Park, Wan Jae Myeong
  • Patent number: 9771275
    Abstract: The present invention relates to a method for preparing uniform metal oxide nanoparticles. According to the preparation method of the present invention, it is possible to maintain the temperature and pressure inside the reactor in a stable and constant manner by removing water generated in the reaction step for forming metal oxide nanoparticles. Thus, the uniformity of nanoparticles formed is increased, and the reproducibility between batches can be increased even in a repeated process and and a large-scale reaction. Therefore, the preparation method of the present invention can be used to synthesize uniform nanoparticles reproducibly in large quantities.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: September 26, 2017
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Ju Young Park, Eung Gyu Kim, Wan Jae Myeong, Bong Sik Jeon, Eun Byul Kwon
  • Patent number: 9757482
    Abstract: Provided are iron oxide nanocapsules for an MRI contrast agent having high contrast, in which a plurality of iron oxide nanoparticles having a hydrophobic ligand attached thereto are encapsulated in an encapsulation material including a biodegradable polymer and a surfactant, and which satisfy Relations 1, 2, 3, 4 and 5 below. Also a method of manufacturing the iron oxide nanocapsules is provided. 5?100*D?(IO)/C?(IO)??[Relation 1] 2.5?100*D?(Cap)/C?(Cap)??[Relation 2] 0.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 12, 2017
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Bong-Sik Jeon, Eung Gyu Kim, Eun Byul Kwon, Ju Young Park, Wan Jae Myeong
  • Publication number: 20160303163
    Abstract: Provided are a pharmaceutical composition including iron oxide nanoparticles for preventing or treating iron deficiency and iron deficiency anemia accompanied thereby, and a preparation method thereof.
    Type: Application
    Filed: December 23, 2014
    Publication date: October 20, 2016
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Bong Sik JEON, Eun Byul KWON, Eung Gyu KIM, Wan Jae MYEONG, Ju Young PARK