Patents by Inventor Taek Kyu Han

Taek Kyu Han 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).

  • Selective oligomerization reaction process of ethylene
    Patent number: 10399912
    Abstract: The present invention relates to a commercial reaction process for the selective oligomerization reaction of ethylene, and a method for efficiently removing reaction heat to be generated in a reaction and regulating the temperature of the reactor and, more specifically, to an oligomerization reaction process of ethylene by circulating a liquid mixture in the reactor, separating unreacted ethylene from this circulation flow by an apparatus for separating unreacted ethylene from the circulation flow, and then cooling the remaining mixture and reintroducing it to the reactor, thereby removing the reaction heat in the reactor and allowing temperature control.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: September 3, 2019
    Inventor: Taek Kyu Han
  • Ethylene tetramerization catalyst system and method for preparing 1-octene using the same
    Patent number: 10131590
    Abstract: Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: November 20, 2018
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Taek Kyu Han, Myung Ahn Ok, Sung Seok Chae, Sang Ook Kang, Jae Ho Jung
  • SELECTIVE OLIGOMERIZATION REACTION PROCESS OF ETHYLENE
    Publication number: 20180237360
    Abstract: The present invention relates to a commercial reaction process for the selective oligomerization reaction of ethylene, and a method for efficiently removing reaction heat to be generated in a reaction and regulating the temperature of the reactor and, more specifically, to an oligomerization reaction process of ethylene by circulating a liquid mixture in the reactor, separating unreacted ethylene from this circulation flow by an apparatus for separating unreacted ethylene from the circulation flow, and then cooling the remaining mixture and reintroducing it to the reactor, thereby removing the reaction heat in the reactor and allowing temperature control.
    Type: Application
    Filed: September 16, 2015
    Publication date: August 23, 2018
    Inventor: Taek Kyu HAN
  • ETHYLENE TETRAMERIZATION CATALYST SYSTEM AND METHOD FOR PREPARING 1-OCTENE USING THE SAME
    Publication number: 20180016206
    Abstract: Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).
    Type: Application
    Filed: October 4, 2017
    Publication date: January 18, 2018
    Inventors: Taek Kyu HAN, Myung Ahn OK, Sung Seok CHAE, Sang Ook KANG, Jae Ho JUNG
  • Ethylene tetramerization catalyst systems and method for preparing 1-octene using the same
    Patent number: 9802874
    Abstract: Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: October 31, 2017
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Taek Kyu Han, Myung Ahn Ok, Sung Seok Chae, Sang Ook Kang, Jae Ho Jung
  • ETHYLENE TETRAMERIZATION CATALYST SYSTEMS AND METHOD FOR PREPARING 1-OCTENE USING THE SAME
    Publication number: 20140081064
    Abstract: Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).
    Type: Application
    Filed: November 21, 2013
    Publication date: March 20, 2014
    Applicant: SK INNOVATION CO., LTD. & SK GLOBAL CHEMICAL CO. LTD.
    Inventors: TAEK KYU HAN, MYUNG AHN OK, SUNG SEOK CHAE, SANG OOK KANG, JAE HO JUNG
  • Ethylene tetramerization catalyst systems and method for preparing 1-octene using the same
    Patent number: 8609924
    Abstract: Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: December 17, 2013
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Taek Kyu Han, Myung Ahn Ok, Sung Seok Chae, Sang Ook Kang, Jae Ho Jung
  • Ethylene oligomerization catalyst systems having enhanced selectivity
    Patent number: 8309779
    Abstract: Disclosed herein is a catalyst system for selective oligomerization of ethylene, which comprises a P—C—C—P frame-work ligand, which is (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4), and a chromium-based metal compound. Also disclosed is a method of greatly enhancing the activity and selectivity of oligomerization, such as trimerization or tetramerization, using a ligand having a specific steric arrangement structure.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: November 13, 2012
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Taek Kyu Han, Sung Seok Chae, Sang Ook Kang, Kyung Ryang Wee, Sung Kwan Kim
  • ETHEYENE OLIGOMERIZA CATALYST SYSTEMS HAVING ENEHANCED SELECTIVITY
    Publication number: 20100145124
    Abstract: Disclosed herein is a catalyst system for selective oligomerization of ethylene, which comprises a P—C—C—P frame-work ligand, which is (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4), and a chromium-based metal compound. Also disclosed is a method of greatly enhancing the activity and selectivity of oligomerization, such as trimerization or tetramerization, using a ligand having a specific steric arrangement structure.
    Type: Application
    Filed: December 24, 2007
    Publication date: June 10, 2010
    Inventors: Taek Kyu Han, Sung Seok Chae, San Ook Kang, Kyung Ryang Wee, Sung Kwan Kim
  • ETHYLENE TETRAMERIZATION CATALYST SYSTEMS AND METHOD FOR PREPARING 1-OCTENE USING THE SAME
    Publication number: 20100137669
    Abstract: Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).
    Type: Application
    Filed: January 17, 2008
    Publication date: June 3, 2010
    Inventors: Taek Kyu Han, Myung Ahn Ok, Sung Seok Chae, Sang Ook Kang, Jae Ho Jung
  • Poly (phenylenevinylene) derivatives substituted with spirobifluorenyl group(s) and electroluminescent devices prepared using the same
    Publication number: 20020061419
    Abstract: Disclosed is an organic electroluminescent polymer represented by the following Formula 1: 1
    Type: Application
    Filed: October 4, 2001
    Publication date: May 23, 2002
    Inventors: Tae-Woo Woo, Hong You, Taek-Kyu Han, Dong-Jin Joo, Soon-Ki Kwon, Yun-Hi Kim, Dong-Cheol Shin, Sang-Yun Jung