Patents by Inventor Do-Kyoung Kim

Do-Kyoung Kim 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: 20200385521
    Abstract: Provided are a method for producing a polyamide including an amide-based molecular weight controller and a polyamide produced thereby, wherein the amide-based molecular weight controller may easily control the molecular weight of the polyamide to have a narrow molecular weight distribution so as to prevent an increase in the molecular weight due to a basic intermediate produced in anionic polymerization and a side reaction generated under a high-temperature polymerization condition.
    Type: Application
    Filed: October 30, 2018
    Publication date: December 10, 2020
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Kyung Ho KWON, Seung Hoe DO, Jin Seo LEE, Dae Hak KIM, Kyoung Won YIM, Do Kyoung KIM, Hye Yeon LEE
  • Publication number: 20200385520
    Abstract: Provided are a method for producing a polyamide using an end-capping agent and a polyamide produced thereby, wherein the method is an eco-friendly process method without using a solvent as a catalyst and may prepare, by using an end-capping agent for suppressing side reaction, a polymer having a uniform molecular weight and a high conversion rate at a low temperature within a short polymerization time in comparison with a conventional polymerization method.
    Type: Application
    Filed: October 29, 2018
    Publication date: December 10, 2020
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Kyoung Won YIM, Seung Hoe DO, Jin Seo LEE, Hye Yeon LEE, Dae Hak KIM, Do Kyoung KIM, Kyung Ho KWON
  • Publication number: 20200277438
    Abstract: The present invention provides a method for producing a polyamide with controlled activator addition, and a polyamide produced thereby, the method allowing a polymerization conversion rate and a polydispersity index (PDI) to be enhanced by controlling the addition of an activator so as to prevent a gelation phenomenon that occurs during anionic polymerization.
    Type: Application
    Filed: October 29, 2018
    Publication date: September 3, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Hye Yeon LEE, Do Kyoung KIM, Seung Hoe DO, Jin Seo LEE, Kyung Ho KWON, Dae Hak KIM, Kyoung Won YIM
  • Publication number: 20200277439
    Abstract: The present invention relates to a method for producing a polyamide by coordinated anionic ring-opening polymerization and a polyamide produced thereby, wherein metal alkoxide as an initiator and metal hydride as a catalyst are added to enable polymerization having a narrow molecular weight distribution and uniform molecular weight within a short polymerization reaction time at a low temperature, without a separate vacuum process, as compared with an existing polymerization method.
    Type: Application
    Filed: October 29, 2018
    Publication date: September 3, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Hye Yeon LEE, Dae Hak KIM, Seung Hoe DO, Jin Seo LEE, Kyung Ho KWON, Kyoung Won YIM, Do Kyoung KIM
  • Publication number: 20200270397
    Abstract: Provided is a method for preparing a polyamide by an anionic polymerization reaction, wherein lactam, and based on 100 parts by weight of the entire lactam, 0.01 parts by weight to 20 parts by weight of an alkali metal as an initiator, 0.3 parts by weight to 10 parts by weight of a molecular weight controller, and 0.002 parts by weight to 1.0 part by weight of carbon dioxide as an activator may be included.
    Type: Application
    Filed: November 5, 2018
    Publication date: August 27, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Seung Hoe DO, Jin Seo LEE, Kyung Ho KWON, Do Kyoung KIM, Hye Yeon LEE, Kyoung Won YIM
  • Patent number: 10544374
    Abstract: A process for reducing haze in a heavy base oil includes: obtaining a first effluent oil by contacting a hydrocarbon feedstock with a first catalyst including a zeolite of the ZSM-12 family; and obtaining a second effluent oil by contacting the first effluent oil with a second catalyst including a zeolite of the ZSM-48 family. A hydroisomerization catalyst system having reduced haze includes: a first catalytic region having a first catalyst disposed therein, the first catalyst including a zeolite of the ZSM-12 family; and a second catalytic region having a second catalyst disposed therein, the second catalyst including a zeolite of the ZSM-48 family. The first catalytic region is disposed upstream of the second catalytic region.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: January 28, 2020
    Assignees: SK Innovation Co., Ltd., SK Lubricants Co., Ltd.
    Inventors: Do Kyoung Kim, Do Woan Kim, Seung Woo Lee, Yoon Kyung Lee, Seon Ju Lim
  • Patent number: 10406510
    Abstract: This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C—C hydrogenolysis activity.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: September 10, 2019
    Assignees: SK INNOVATION CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min Kee Choi, Ju Hwan Im, Do Woan Kim, Do Kyoung Kim, Tae Jin Kim, Seung Hoon Oh, Tae Hong Seok
  • Publication number: 20190083963
    Abstract: This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C-C hydrogenolysis activity.
    Type: Application
    Filed: October 26, 2018
    Publication date: March 21, 2019
    Inventors: Min Kee Choi, Ju Hwan Im, Do Woen Kim, Do Kyoung Kim, Tae Jin Kim, Seung Hoon Oh, Tae Hong Seok
  • Patent number: 10155219
    Abstract: This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C—C hydrogenolysis activity.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: December 18, 2018
    Assignees: SK INNOVATION CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min Kee Choi, Ju Hwan Im, Do Woan Kim, Do Kyoung Kim, Tae Jin Kim, Seung Hoon Oh, Tae Hong Seok
  • Publication number: 20170306251
    Abstract: A process for reducing haze in a heavy base oil includes: obtaining a first effluent oil by contacting a hydrocarbon feedstock with a first catalyst including a zeolite of the ZSM-12 family; and obtaining a second effluent oil by contacting the first effluent oil with a second catalyst including a zeolite of the ZSM-48 family. A hydroisomerization catalyst system having reduced haze includes: a first catalytic region having a first catalyst disposed therein, the first catalyst including a zeolite of the ZSM-12 family; and a second catalytic region having a second catalyst disposed therein, the second catalyst including a zeolite of the ZSM-48 family. The first catalytic region is disposed upstream of the second catalytic region.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 26, 2017
    Inventors: Do Kyoung Kim, Do Woan Kim, Seung Woo Lee, Yoon Kyung Lee, Seon Ju Lim
  • Publication number: 20160051971
    Abstract: This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C—C hydrogenolysis activity.
    Type: Application
    Filed: April 22, 2014
    Publication date: February 25, 2016
    Inventors: Min Kee CHOI, Ju Hwan IM, Do Woan KIM, Do Kyoung KIM, Tae Jin KIM, Seung Hoon OH, Tae Hong SEOK
  • Patent number: 8980082
    Abstract: Disclosed herein is a method of simultaneously removing sulfur and mercury from a hydrocarbon material, including: hydrotreating the hydrocarbon material containing sulfur and mercury in the presence of a catalyst including a metal supported with a carrier to convert sulfur into hydrogen sulfide, and adsorb mercury on a metal active site or a carrier of the catalyst in the form of mercury sulfide.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: March 17, 2015
    Assignees: SK Innovation Co., Ltd., SK Energy Co., Ltd.
    Inventors: Do Kyoung Kim, Do Woan Kim, Sang Il Lee, Seung Hoon Oh, Woo Kyung Kim, Han Seung Pan, Woo Young Kim, Kyung Soo Jun, Sun Choi
  • Publication number: 20130313165
    Abstract: Disclosed herein is a method of simultaneously removing sulfur and mercury from a hydrocarbon material, including: hydrotreating the hydrocarbon material containing sulfur and mercury in the presence of a catalyst including a metal supported with a carrier to convert sulfur into hydrogen sulfide, and adsorb mercury on a metal active site or a carrier of the catalyst in the form of mercury sulfide.
    Type: Application
    Filed: February 8, 2012
    Publication date: November 28, 2013
    Applicant: SK Innovation Co., Ltd.
    Inventors: Do Kyoung Kim, Do Woan Kim, Sang Il Lee, Seung Hoon Oh, Woo Kyung Kim, Han Seung Pan, Woo Young Kim, Kyung Soo Jun, Sun Choi
  • Patent number: 6627167
    Abstract: The present invention relates to a catalyst for automotive lean-burn engine comprising platinum impregnated on a zeolite support and a process for preparing the same. In accordance with the invention, the catalyst comprising a platinum-impregnated zeolite support can be prepared by sublimation, where the zeolite support effectively eliminates hydrocarbons from automotive exhaust gases by adsorption, and platinum as an active component of the catalyst exerts its catalytic activity through the direct decomposition of nitrogen oxides contained in automotive exhaust gases. Furthermore, the catalyst of the invention provides a widened temperature window for maximum catalytic activity and improved catalytic activity, compared to those of the conventional catalysts.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: September 30, 2003
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Seong-Ihl Woo, Do-Kyoung Kim, Do-Heui Kim
  • Publication number: 20020055431
    Abstract: The present invention relates to a catalyst for automotive lean-burn engine comprising platinum impregnated on a zeolite support and a process for preparing the same. In accordance with the invention, the catalyst comprising a platinum-impregnated zeolite support can be prepared by sublimation, where the zeolite support effectively eliminates hydrocarbons from automotive exhaust gases by adsorption, and platinum as an active component of the catalyst exerts its catalytic activity through the direct decomposition of nitrogen oxides contained in automotive exhaust gases. Furthermore, the catalyst of the invention provides a widened temperature window for maximum catalytic activity and improved catalytic activity, compared to those of the conventional catalysts.
    Type: Application
    Filed: January 8, 2001
    Publication date: May 9, 2002
    Inventors: Seong-Ihl Woo, Do-Kyoung Kim, Do-Heui Kim