Patents by Inventor Ki-Soo Lee

Ki-Soo Lee 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).

  • Method for oligomerization of olefins
    Patent number: 10173948
    Abstract: The present disclosure relates to a method for oligomerization of olefins. The method for oligomerization of olefins according to the present disclosure not only provides excellent catalytic activity and stable process operation, but also exhibits high selectivity to 1-hexene or 1-octene by using a catalyst system including an activity modifier.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: January 8, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Seul Ki Im, Yong Ho Lee, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seok Pil Sa, Yoon Ki Hong
  • Ethylene/alpha-olefin copolymers having excellent processability
    Patent number: 10155830
    Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having excellent processability. The ethylene/alpha-olefin copolymer according to the present invention has low complex viscosity at high shear rate and has excellent processability, and thus it could be applied to the processing of a large diameter pipe, a complex pipe or the like.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: December 18, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Joong Soo Kim, Soon Ho Sun, Oh Joo Kwon, Yi Young Choi, Ki Soo Lee
  • Secondary battery including polymer material layer and method of manufacturing the same, having a case seamlessly formed as a single body
    Patent number: 10147917
    Abstract: A secondary battery and a method of manufacturing the same are disclosed. In one aspect, the method includes preparing an electrode assembly comprising a positive electrode plate, a negative electrode plate, and a separator interposed therebetween. The method also includes freezing the electrode assembly after the electrode assembly is filled with an electrolyte solution, dipping the frozen electrode assembly in a liquid polymer material, retrieving the dipped electrode assembly from the liquid polymer material, and curing an external surface of the electrode assembly.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: December 4, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jee-Won Kang, Byong-Gon Lee, Ki-Soo Lee, Jake Kim, Maeng-Eun Lee, Jee-Hoon Han, Seon-Hong Lee, Jong-Man Kim, Young-Woong Kwon, Hee-Sung Choi
  • METHOD FOR PREPARING OLIGOMERIZATION CATALYST SYSTEM AND OLIGOMERIZATION CATALYST SYSTEM PREPARED THEREBY
    Publication number: 20180339289
    Abstract: The present invention relates to a method for preparing an oligomerization catalyst system and the method comprises preparing a catalyst composition by mixing a PNP-based ligand compound and a transition metal compound, and mixing and activating a co-catalyst and the catalyst composition at a temperature from ?40 to 80° C. The oligomerization catalyst system prepared by the method may maintain the activity thereof during an oligomerization reaction at a high temperature, and the reaction temperature of oligomerization may be easily controlled. Various merits in processing may be obtained.
    Type: Application
    Filed: February 2, 2016
    Publication date: November 29, 2018
    Inventors: Seul Ki IM, Yong Ho LEE, Eun Ji SHIN, Jin Young PARK, Seok Pil SA, Ki Soo LEE
  • Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
    Patent number: 10131723
    Abstract: The present invention relates to a compound represented by the chemical formula 1, a catalyst system for olefin oligomerization comprising the same, and a method for oligomerizign olefins using the same, and the catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity as well as high selectivity for 1-hexene or 1-octene, thereby enabling more efficient preparation of alpha-olefins.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: November 20, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Yong Ho Lee, Seul Ki Im, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seok Pil Sa, Yoon Ki Hong
  • LIGAND COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20180327528
    Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The ligand compound according to the present invention has a structure in which a substituent is substituted in the trans form, and thereby when used for olefin oligomerization, the activity of the catalyst used and the selectivity of 1-hexene and 1-octene can be increased.
    Type: Application
    Filed: October 21, 2016
    Publication date: November 15, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jin Young Park, Yong Ho Lee, Eun Ji Shin, Seok Pil Sa, Ki Soo Lee, Seul Ki Im, Yoon Ki Hong
  • 1-octene composition
    Patent number: 10099971
    Abstract: The present invention relates to a 1-octene composition. The 1-octene composition according to the present invention is prepared by ethylene oligomerization and comprises a high content of 1-octene and monomers useful for copolymerization of 1-octene at the same time.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 16, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Seok Pil Sa, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seul Ki Im, Yoon Ki Hong
  • METALLOCENE SUPPORTED CATALYST AND METHOD FOR PREPARING POLYOLEFIN USING THE SAME
    Publication number: 20180282442
    Abstract: The present invention provides a metallocene supported catalyst that can prepare a polyolefin having excellent transparency even when processed into a film, as well as excellent processibility and mechanical properties, with high catalytic activity, and a method for preparing a polyolefin using the same.
    Type: Application
    Filed: December 22, 2016
    Publication date: October 4, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Young Suk You, Sung Ho Park, Ki Soo Lee, Heon Yong Kwon, Dae Sik Hong, Eun Young Shin, Hyun Jee Kwon, Jin Young Lee
  • Method for preparing olefin oligomers in the presence of a halogenated organic solvent and a catalyst comprising two diphosphino amine compounds
    Patent number: 10087123
    Abstract: The present invention relates to a process for preparing an olefin oligomer including a step of contacting an olefin monomer with a composite catalyst in the presence of a halogenated organic solvent, wherein the composite catalyst includes: a transition metal compound; a cocatalyst; and an organic ligand including a diphosphonoamine compound in which two or more diphosphonoamines are combined via a polyvalent functional group.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: October 2, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Eun Ji Shin, Yong Ho Lee, Seok Pil Sa, Ki Soo Lee, Jin Young Park
  • METALLOCENE-SUPPORTED CATALYST AND METHOD OF PREPARING POLYOLEFIN USING THE SAME
    Publication number: 20180265605
    Abstract: Provided are a novel metallocene-supported catalyst and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure may be used in the preparation of polyolefins, it may have excellent activity and excellent reactivity with comonomers, and it may prepare olefinic polymers having a high molecular weight and a low molecular weight.
    Type: Application
    Filed: December 14, 2015
    Publication date: September 20, 2018
    Inventors: Eun Young SHIN, Heon Yong KWON, Se Young KIM, Hyun Jee KWON, Dae Sik HONG, Sung Min LEE, Ki Soo LEE
  • OLEFIN POLYMER AND PREPARATION METHOD THEREOF
    Publication number: 20180251584
    Abstract: The present invention relates to an olefin polymer and a preparation method thereof. The olefin polymer exhibits excellent mechanical strength and high processability, and thus is expected to be utilized as a material for various products. Particularly, the olefin polymer can be stably produced into films by a melt-blowing process and thus is expected to be usefully used as a material for products prepared by a melt-blowing process.
    Type: Application
    Filed: February 22, 2017
    Publication date: September 6, 2018
    Inventors: Sol CHO, Sung Hyun PARK, Oh Joo KWON, Ki Soo LEE, Heon Yong KWON, Dae Sik HONG, Myung Han LEE, Hyun Jee KWON
  • METHOD FOR PREPARING SUPPORTED HYBRID METALLOCENE CATALYST, AND SUPPORTED HYBRID METALLOCENE CATALYST USING THE SAME
    Publication number: 20180251580
    Abstract: The present disclosure provides a method for preparing a supported hybrid metallocene catalyst which can be used to prepare a polyolefin, a supported hybrid metallocene catalyst prepared by using the method, and a method for preparing a polyolefin using the supported hybrid metallocene catalyst.
    Type: Application
    Filed: November 24, 2016
    Publication date: September 6, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Heon Yong Kwon, Eun Young Shin, Hyun Jee Kwon, Ki Soo Lee, Dae Sik Hong, Se Young Kim, Sung Min Lee
  • METHOD FOR PREPARING LONG FIBER-REINFORCING OLEFIN POLYMER AND LONG FIBER
    Publication number: 20180237560
    Abstract: The present invention provides a method for preparing an olefin polymer which can exhibit excellent isotacticity in a high yield and thus is suitable for use in reinforcing a long fiber, and a long fiber comprising an olefin polymer produced according to the above preparation method.
    Type: Application
    Filed: November 30, 2016
    Publication date: August 23, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Kyung Seop Noh, Ki Soo Lee, Sang Jin Jeon, Sang Eun An, Ji Ho Choi, Jae Youp Cheong, Hee Kwang Park, Sang Hoon Lee
  • OLEFIN-BASED POLYMER WITH EXCELLENT PROCESSABILITY
    Publication number: 20180223009
    Abstract: Provided is an olefin-based polymer with excellent processability. The olefin-based polymer according to the present invention has a high molecular weight and a broad molecular weight distribution to show excellent processability and improved mechanical properties, thereby being usefully applied according to the intended use.
    Type: Application
    Filed: September 4, 2015
    Publication date: August 9, 2018
    Inventors: Joong Soo KIM, Yu Taek SUNG, Ki Soo LEE, Dae Sik HONG, Ki Heon SONG, Eun Kyoung SONG, Heon Yong KWON, Yong Ho LEE, Dong Hoon JEONG, Soon Ho SUN, Sun Mi KIM
  • 1-OCTENE COMPOSITION
    Publication number: 20180222815
    Abstract: The present invention relates to a 1-octene composition. The 1-octene composition according to the present invention is prepared by ethylene oligomerization and comprises a high content of 1-octene and monomers useful for copolymerization of 1-octene at the same time.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: Yong Ho LEE, Seok Pil SA, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seul Ki IM, Yoon Ki HONG
  • 1-OCTENE COMPOSITION
    Publication number: 20180222816
    Abstract: The present invention relates to a 1-octene composition. The 1-octene composition according to the present invention is prepared by ethylene oligomerization and comprises a high content of 1-octene and monomers useful for copolymerization of 1-octene at the same time.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: Yong Ho LEE, Seok Pil SA, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seul Ki IM, Yoon Ki HONG
  • Method for preparing olefin oligomers in the presence of a halogenated organic solvent and a catalyst comprising two diphosphino amine compounds
    Patent number: 10035738
    Abstract: The present invention relates to a process for preparing an olefin oligomer including a step of contacting an olefin monomer with a composite catalyst in the presence of a halogenated organic solvent, wherein the composite catalyst includes: a transition metal compound; a cocatalyst; and an organic ligand including a diphosphonoamine compound in which two or more diphosphonoamines are combined via a polyvalent functional group.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: July 31, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Eun Ji Shin, Yong Ho Lee, Seok Pil Sa, Ki Soo Lee, Jin Young Park
  • AN ETHYLENE-1-HEXENE-1-BUTENE TERPOLYMER AND A FILM INCLUDING THE SAME (As Amended)
    Publication number: 20180208693
    Abstract: The present invention relates to ethylene-1-hexene-1-butene terpolymer and a film including the same. The ethylene-1-hexene-1-butene terpolymer according to the present invention has an optimized range of density and melt index and includes 1-hexene and 1-butene as comonomers, and can provide a polymer showing excellent properties by regulating the content ratio of the comonomers in a certain range. Therefore, the film prepared by using the same can be usefully used because it has excellent stickiness, processibility, and falling dart impact strength which are especially suitable for stretch films.
    Type: Application
    Filed: July 17, 2015
    Publication date: July 26, 2018
    Inventors: Yu Taek SUNG, Heon Yong KWON, Dae Sik HONG, Seung Mi LEE, Ki Soo LEE, Dong Hoon JEONG, Eun Young SHIN, Chang-Hwan JANG
  • ETHYLENE/ALPHA-OLEFIN COPOLYMERS HAVING EXCELLENT PROCESSABILITY
    Publication number: 20180194883
    Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having excellent processability. The ethylene/alpha-olefin copolymer according to the present invention has low complex viscosity at high shear rate and has excellent processability, and thus it could be applied to the processing of a large diameter pipe, a complex pipe or the like.
    Type: Application
    Filed: December 7, 2015
    Publication date: July 12, 2018
    Applicant: LG CHEM, Ltd.
    Inventors: Joong Soo KIM, Soon Ho SUN, Oh Joo KWON, Yi Young CHOI, Ki Soo LEE
  • Positive active material for rechargeable lithium battery, method of preparing same, and rechargeable lithium battery including same
    Patent number: 10020502
    Abstract: A positive active material for a rechargeable lithium battery includes a lithium intercalation compound; and lithium titanium oxide represented by Chemical Formula 1 on the surface of the lithium intercalation compound surface. Li4-xMxTiyO12-z.??Chemical Formula 1 In the Chemical Formula 1, 0<x?3, 1?y?5, ?0.3?z?0.3, and M is an element selected from Mg, Al, Ga, La, Tb, Gd, Ce, Pr, Nd, Sm, Ba, Sr, Ca, and combinations thereof.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 10, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Hyun Shim, Ki-Soo Lee, Ho Kim, Jae-Han Lee, Se-Hee Lee, Hyeon-Ah Ju, Joo-Han Song, Yoon-Hee Lee