Patents by Inventor Dong-Hyun Ko

Dong-Hyun Ko 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).

  • CATALYST SYSTEM FOR OXIDATIVE DEHYDROGENATION, REACTOR FOR OXIDATIVE DEHYDROGENATION INCLUDING CATALYST SYSTEM, AND METHOD OF PERFORMING OXIDATIVE DEHYDROGENATION USING REACTOR
    Publication number: 20190201876
    Abstract: Provided is a catalyst system for oxidative dehydrogenation, a reactor for oxidative dehydrogenation including the catalyst system, and a method of performing oxidative dehydrogenation using the reactor. In the catalyst system, a fixed-bed reactor is filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more), wherein each stage of the n-stage structure satisfies Equations 1 and 2 as claimed so that the concentration of an active ingredient included in the catalyst gradually increases in the direction in which reactants are fed into the reactor. Heat generated inside the reactor may be effectively controlled during oxidative dehydrogenation, thereby improving conversion rate, selectivity, and yield. In addition, catalyst deterioration may be reduced, thereby improving long-term stability of the catalyst.
    Type: Application
    Filed: April 12, 2018
    Publication date: July 4, 2019
    Inventors: Myungji SUH, Dong Hyun KO, Jun Han KANG, Hyunseok NAM, Sang Jin HAN, Seongmin KIM
  • CATALYST FOR OXIDATIVE DEHYDROGENATION AND METHOD OF PREPARING THE SAME
    Publication number: 20190184388
    Abstract: The present invention relates to a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, the present invention provides a catalyst for oxidative dehydrogenation allowing oxidative dehydrogenation reactivity to be secured while increasing a first pass yield, and a method of preparing the catalyst.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 20, 2019
    Inventors: Sun Hwan HWANG, Dong Hyun KO, Kyong Yong CHA, Dae Heung CHOI, Myung Ji SUH, Ye Seul HWANG, Jun Kyu HAN, Seong Min KIM, Jun Han KANG, Joo Hyuck LEE, Hyun Seok NAM, Sang Jin HAN
  • Method of preparing multicomponent composite metal oxide catalyst
    Patent number: 10315969
    Abstract: Provided are a method of preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst, and a multicomponent bismuth-molybdenum composite metal oxide catalyst prepared thereby. According to the preparation method, since the almost same structure as that of a typical quaternary bismuth-molybdenum catalyst may be obtained by performing two-step co-precipitation, i.e., primary and secondary co-precipitation, of metal components constituting the catalyst, the reduction of catalytic activity due to the deformation of the structure of the catalyst may be suppressed.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: June 11, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Ye Seul Hwang, Dong Hyun Ko, Kyong Yong Cha, Dae Heung Choi, Myung Ji Suh, Jun Han Kang, Joo Hyuck Lee, Hyun Seok Nam, Jun Kyu Han, Sang Jin Han
  • Catalyst composition containing phosphorous-based ligand and method for hydroformylation using same
    Patent number: 10300472
    Abstract: The present invention relates to a catalyst composition including a phosphorous-based ligand, and a hydroformylation method using the catalyst composition. More particularly, the present invention relates to a catalyst composition, which includes two different kinds of monocoordinated phosphine ligands and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, a catalyst composition lowering a selection ratio of normal aldehyde to iso aldehyde (n/i ratio), which are generated during hydroformylation of an olefinic compound, and exhibiting superior catalytic activity and stability, and a method of hydroformylating an olefinic compound using the catalyst composition are provided.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: May 28, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Min Ji Choi, Mi Young Kim, Sung Shik Eom, Dong Hyun Ko, Da Won Jung, Tae Yun Kim
  • BUTADIENE PREPARATION METHOD PROVIDING EXCELLENT CATALYST REPRODUCIBILITY
    Publication number: 20190144362
    Abstract: A method of preparing butadiene that includes supplying butene, oxygen, nitrogen, and steam into a reactor filled with a metal oxide catalyst, and performing an oxidative dehydrogenation reaction at a temperature of 300 to 450° C. as a reaction step; after the reaction step, maintaining supplying the butene, oxygen, nitrogen, and steam within a range within which the flow rate change of the butene, oxygen, nitrogen, and steam is less than ±40%, or stopping supplying the butene, and cooling the reactor to a temperature range of 200° C. or lower and higher than 70° C. as a first cooling step; and after the first cooling step, stopping supplying the butene, oxygen, nitrogen, and steam or stopping at least supplying the butene, and cooling the reactor to a temperature of 70° C. or lower as a second cooling step.
    Type: Application
    Filed: September 21, 2017
    Publication date: May 16, 2019
    Inventors: Myung Ji SUH, Dong Hyun KO, Jun Han KANG, Kyong Yong CHA, Ye Seul HWANG, Jun Kyu HAN, Sang Jin HAN
  • FERRITE CATALYST FOR OXIDATIVE DEHYDROGENATION, METHOD OF PREPARING FERRITE CATALYST, AND METHOD OF PREPARING BUTADIENE USING FERRITE CATALYST
    Publication number: 20190134612
    Abstract: A ferrite catalyst for oxidative dehydrogenation and a method of preparing the same. The ferrite catalyst is prepared using an epoxide-based sol-gel method, wherein a step of burning includes a first burning step, in which burning is performed at a temperature of 70 to 200° C.; and a second burning step, in which burning is performed after the temperature is raised from a temperature in the range of greater than 200° C. to 250° C. to a temperature in the range of 600 to 900° C.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 9, 2019
    Inventors: Sun Hwan HWANG, Dong Hyun KO, Jun Han KANG, Kyong Yong CHA, Joo Hyuck LEE, Hyun Seok NAM, Dae Heung CHOI, Myung Ji SUH, Ye Seul HWANG, Jun Kyu HAN, Sang Jin HAN, Seong Min KIM
  • CATALYST COMPOSITION FOR HYDROFORMYLATION AND HYDROFORMYLATION METHOD USING THE SAME
    Publication number: 20190111416
    Abstract: The present invention relates to a catalyst composition for hydroformylation and a hydroformylation method using the same, and more particularly to a catalyst composition for hydroformylation including a phosphoramidite ligand and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, provided are a catalyst composition for hydroformylation which increases productivity and provides superior catalytic activity and stability while lowering an n/i ratio in generated aldehyde upon hydroformylation of an olefinic compound, and a method of hydroformylating an olefinic compound using the catalyst composition. [Representative Figure ] FIG.
    Type: Application
    Filed: August 26, 2016
    Publication date: April 18, 2019
    Inventors: Tae Yun KIM, Sung Shik EOM, Da Won JUNG, Dong Hyun KO, Mi Young KIM, Min Ji CHOI
  • Complementary metal oxide silicon transceiver having integrated power amplifier
    Patent number: 10256781
    Abstract: A complementary metal oxide silicon transceiver having an integrated power amplifier is provided. The complementary metal oxide silicon transceiver having the integrated power amplifier is capable of controlling an output power according to a communication environment to solve the following problem that with the increment of an output level of a power amplifier, performance is decreased when noises flow into other blocks of a transceiver with power and thus are inputted to the power amplifier.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: April 9, 2019
    Assignee: FCI INC.
    Inventors: Dong Hyun Ko, Min Chul Kang, Myung Woon Hwang
  • CATALYST FOR OXIDATIVE DEHYDROGENATION AND METHOD OF PREPARING THE SAME
    Publication number: 20180333702
    Abstract: The present invention relates to a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, the present invention provides a catalyst for oxidative dehydrogenation having a porous structure which may easily control heat generation due to high-temperature and high-pressure reaction conditions and side reaction due to the porous structure and thus exhibits superior product selectivity, and a method of preparing the catalyst.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 22, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Myung Ji SUH, Yoon Jae MIN, Dong Hyun KO, Kyong Yong CHA, Se Won BAEK, Jun Kyu HAN
  • CATALYST FOR OXIDATIVE DEHYDROGENATION AND METHOD OF PREPARING THE SAME
    Publication number: 20180290126
    Abstract: Disclosed are a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, a catalyst for oxidative dehydrogenation of butene having a high butene conversion rate and superior side reaction inhibition effect and thus having high reactivity and high selectivity for a product by preparing metal oxide nanoparticles and then fixing the prepared metal oxide nanoparticles to a support, and a method of preparing the same are provided.
    Type: Application
    Filed: May 18, 2017
    Publication date: October 11, 2018
    Inventors: Seongmin KIM, Dong Hyun KO, Kyong Yong CHA, Dae Heung CHOI, Myung Ji SUH, Jun Kyu HAN, Sun Hwan HWANG, Jun Han KANG, Joo Hyuck LEE, Hyun Seok NAM, Ye Seul HWANG, Sang Jin HAN
  • HYDROFORMYLATION CATALYST, COMPOSITION INCLUDING HYDROFORMYLATION CATALYST, AND METHOD OF PREPARING ALDEHYDE USING HYDROFORMYLATION CATALYST (As Amended)
    Publication number: 20180290132
    Abstract: A hydroformylation catalyst having excellent catalytic activity and stability, a composition including the hydroformylation catalyst, and a method of preparing an aldehyde using the hydroformylation catalyst, wherein, when hydroformylation of an olefin compound is performed in the presence of the hydroformylation catalyst to prepare an aldehyde, the normal/iso (n/i) ratio of the prepared aldehyde is lowered, and synthesis gas yield is increased.
    Type: Application
    Filed: July 4, 2017
    Publication date: October 11, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Mi Young KIM, Sung Shik EOM, Dong Hyun KO, Da Won JUNG, Tae Yun KIM, MIn Ji CHOI
  • Apparatus for preparing glycol and method of preparing the same
    Patent number: 10093603
    Abstract: The present disclosure relates to an apparatus for generating glycol and a method thereof. More particularly, the present disclosure relates to an apparatus for generating glycol including (a) an aldol reactor; (b) an extractor for extracting an aldol product, unsaturated aldehyde, using an organic solvent that is not mixed with water; (c) a distillation column for removing a raw material from a solution extract that is discharged from the extractor; (d) a hydrogenation reactor for hydrogenating a solution extract that is discharged from the distillation column; and (e) a divided-wall distillation column for isolating glycol from a hydrogenated solution product that is discharged from the hydrogenation reactor, wherein the hydrogenation reactor is a fixed-bed catalytic reactor that is filled with a copper-based catalyst, and a method of preparing the same.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: October 9, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung Shik Eom, Da Won Jung, Tae Yun Kim, Jung Uk Choi, Dong Hyun Ko, Mi Young Kim, Min Ji Choi
  • CATALYST COMPOSITION CONTAINING PHOSPHOROUS-BASED LIGAND AND METHOD FOR HYDROFORMYLATION USING SAME
    Publication number: 20180272326
    Abstract: The present invention relates to a catalyst composition including a phosphorous-based ligand, and a hydroformylation method using the catalyst composition. More particularly, the present invention relates to a catalyst composition, which includes two different kinds of monocoordinated phosphine ligands and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, a catalyst composition lowering a selection ratio of normal aldehyde to iso aldehyde (n/i ratio), which are generated during hydroformylation of an olefinic compound, and exhibiting superior catalytic activity and stability, and a method of hydroformylating an olefinic compound using the catalyst composition are provided.
    Type: Application
    Filed: October 4, 2016
    Publication date: September 27, 2018
    Inventors: Min Ji CHOI, Mi Young Kim, Sung Shik Eom, Dong Hyun Ko, Da Won Jung, Tae Yun Kim
  • METHOD OF PREPARING ZINC FERRITE CATALYST
    Publication number: 20180229221
    Abstract: The present disclosure relates to a method of preparing a zinc ferrite catalyst. More particularly, the present invention relates to a method of preparing a zinc ferrite catalyst comprising a) a step of dissolving a zinc precursor and an iron (III) precursor in water to prepare an aqueous metal precursor solution; b) a step of precipitating a solid catalyst precursor while vaporizing water in the aqueous metal precursor solution; and c) a step of firing the precipitated solid catalyst precursor to prepare a zinc ferrite catalyst. In accordance with the present disclosure, the method of preparing a zinc ferrite catalyst can be simply carried out without a pH adjustment step and can secure reproducibility.
    Type: Application
    Filed: March 16, 2017
    Publication date: August 16, 2018
    Inventors: Ye Seul HWANG, Dong Hyun KO, Kyong Yong CHA, Dae Heung CHOI
  • Amino-phenyl-sulfonyl-acetate derivatives and use thereof
    Patent number: 10047041
    Abstract: The present invention relates to a novel amino-phenyl-sulfonyl-acetate derivative or a pharmaceutically acceptable salt thereof; and a pharmaceutical composition for preventing or treating diabetes comprising the same as an active ingredient.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: August 14, 2018
    Assignee: CJ HEALTHCARE CORPORATION
    Inventors: Jae Ho Yoo, Seung Chan Kim, Soo Yeon Jung, Hyoung Rok Bak, Young Mee Chung, Sung Jun Kim, Sook Kyung Park, Seog Beom Song, Shin-Young Ryu, Mi Young Yoon, Dong Hyun Ko, Sun Young Park, Chi Hye Park, Nak Hyun Choi
  • FERRITE-BASED CATALYST COMPOSITE, METHOD OF PREPARING THE SAME, AND METHOD OF PREPARING BUTADIENE USING THE SAME
    Publication number: 20180214854
    Abstract: The present invention relates to a ferrite-based catalyst composite, a method of preparing the same, and a method of preparing butadiene using the same. More particularly, the present invention provides a ferrite-based catalyst composite having a shape that allows effective dispersion of excess heat generated in a butadiene production process and prevention of catalyst damage and side reaction occurrence by reducing direct exposure of a catalyst to heat, a method of preparing the ferrite-based catalyst composite, and a method of preparing butadiene capable of lowering the temperature of a hot spot and reducing generation of Cox by allowing active sites of a catalyst to have a broad temperature gradient (profile) during oxidative dehydrogenation using the ferrite-based catalyst composite, and thus, providing improved process efficiency.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 2, 2018
    Inventors: Dae Heung CHOI, Dong Hyun KO, Kyong Yong CHA, Myung Ji SUH, Ye Seul HWANG, Sun Hwan HWANG, Seong Min KIM, Jun Han KANG, Joo Hyuck LEE, Hyun Seok NAM, Sang Jin HAN, Jun Kyu HAN
  • METHOD OF PREPARING CATALYST FOR OXIDATIVE DEHYDROGENATION
    Publication number: 20180207621
    Abstract: The present invention relates to a method of preparing a catalyst for oxidative dehydrogenation. More particularly, the present invention provides a method of preparing a catalyst for oxidative dehydrogenation providing superior selectivity and yield for a conjugated diene according to oxidative dehydrogenation by constantly maintaining pH of a coprecipitation solution using a drip-type double precipitation method to adjust an ?-iron oxide content in a catalyst in a predetermined range.
    Type: Application
    Filed: March 15, 2017
    Publication date: July 26, 2018
    Inventors: Jun Kyu HAN, Dong Hyun KO, Kyong Yong CHA, Myung Ji SUH, Sun Hwan HWANG, Seong Min KIM
  • COMPLEMENTARY METAL OXIDE SILICON TRANSCEIVER HAVING INTEGRATED POWER AMPLIFIER
    Publication number: 20180212574
    Abstract: A complementary metal oxide silicon transceiver having an integrated power amplifier is provided. The complementary metal oxide silicon transceiver having the integrated power amplifier is capable of controlling an output power according to a communication environment to solve the following problem that with the increment of an output level of a power amplifier, performance is decreased when noises flow into other blocks of a transceiver with power and thus are inputted to the power amplifier.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 26, 2018
    Inventors: Dong Hyun KO, Min Chul KANG, Myung Woon HWANG
  • CATALYST FOR COATING SURFACE OF POROUS MATERIAL AND METHOD OF TREATING SURFACE OF POROUS MATERIAL
    Publication number: 20180186711
    Abstract: The present invention relates to a catalyst for coating a surface of a porous material and a method of treating the surface of the porous material. More particularly, when the catalyst for coating a surface of a porous material and the method of treating the surface of the porous material of the present invention are used for butadiene synthesis reaction under high gas space velocity and high pressure conditions, heat generation may be easily controlled and differential pressure may be effectively alleviated, thereby providing improved reactant conversion rate and product selectivity.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 5, 2018
    Inventors: Myung Ji SUH, Jun Han KANG, Dong Hyun KO, Seong Min KIM, Hyun Seok NAM, Joo Hyuck LEE, Kyong Yong CHA, Dae Heung CHOI, Sang Jin HAN, Jun Kyu HAN, Sun Hwan HWANG, Ye Seul HWANG
  • CATALYST FOR OXIDATIVE DEHYDROGENATION AND METHOD OF PREPARING THE SAME
    Publication number: 20180133698
    Abstract: The present invention relates to a method of preparing a catalyst for oxidative dehydrogenation. More particularly, the method of preparing a catalyst for oxidative dehydrogenation includes a first step of preparing an aqueous iron-metal precursor solution by dissolving a trivalent cation iron (Fe) precursor and a divalent cation metal (A) precursor in distilled water; a second step of obtaining a slurry of an iron-metal oxide by reacting the aqueous iron-metal precursor solution with ammonia water in a coprecipitation bath to form an iron-metal oxide (step b) and then filtering the iron-metal oxide; and a third step of heating the iron-metal oxide slurry. In accordance with the present invention, a metal oxide catalyst, as a catalyst for oxidative dehydrogenation, having a high spinel phase structure proportion may be economically prepared by a simple process.
    Type: Application
    Filed: March 7, 2017
    Publication date: May 17, 2018
    Inventors: Kyong Yong CHA, Myung Ji SUH, Dong Hyun KO, Dae Heung CHOI, Ye Seul HWANG, Jun Kyu HAN, Sun Hwan HWANG, Seong Min KIM