Patents by Inventor Sang-Mi Lee

Sang-Mi 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).

  • Patent number: 10815314
    Abstract: The present invention relates to a modified conjugated diene-based polymer containing a functional group derived from a tertiary amine compound represented by Formula 1, a method of preparing the same, and a tertiary amine compound represented by Formula 1.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: October 27, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sang Mi Lee, Hae Sung Sohn, Heung Yeal Choi, No Ma Kim
  • Publication number: 20200235369
    Abstract: An embodiment of the present invention relates to a secondary battery, wherein a technical problem to be solved is to provide a secondary battery which has low resistance and can output high power without loss of capacity, and can prevent deformation or cracking of an electrode assembly. To this end, the present invention provides a secondary battery comprising: a cylindrical can; an electrode assembly which is received in the cylindrical can and includes multiple first tabs extending in a first direction which is a longitudinal direction of the cylindrical can, and multiple second tabs extending in a second direction opposite to the first direction; a cap assembly for sealing the cylindrical can; a first current collecting structure which electrically connects the multiple first tabs to the cap assembly while being insulated from the cylindrical can; and a second current collecting structure for electrically connecting the multiple second tabs to the cylindrical can.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 23, 2020
    Inventors: Hyun Ki JEONG, Ho Jae LEE, Jung Hyun PARK, June Hyoung PARK, Nobuyuki OYAGI, Sang Mi LEE, Won Ik LEE, Ye Ji CHA
  • Patent number: 10711160
    Abstract: A slurry composition for polishing a metal layer and a method for fabricating a semiconductor device using the same are provided. The slurry composition for polishing a metal layer includes polishing particles including a metal oxide, an oxidizer including hydrogen peroxide, and a first polishing regulator including at least one selected from a group consisting of phosphate, phosphite, hypophosphite, and metaphosphate, wherein a content of the oxidizer is 0.01 wt % to 0.09 wt % with respect to 100 wt % of the slurry composition for polishing the metal layer.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: July 14, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KCTECH Co., Ltd.
    Inventors: Seung Ho Park, Hyun Goo Kong, Jung Hun Kim, Sang Mi Lee, Woo In Lee, Hee Sook Cheon, Sang Kyun Kim, Hao Cui, Jong Hyuk Park, Il Young Yoon
  • Publication number: 20200181495
    Abstract: The present invention relates to a liquid crystal aligning agent composition for producing a liquid crystal alignment film having improved film strength together with liquid crystal alignment properties, a method for producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Application
    Filed: June 26, 2018
    Publication date: June 11, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sang Mi LEE, Hee HAN, Jung Ho JO, Sung Joon MIN, Hang Ah PARK, Soon Ho KWON, Jun Young YOON, Hyeong Seuk YUN, Seongku KIM, Hoonseo PARK
  • Patent number: 10676543
    Abstract: The present invention relates to a modified conjugated diene-based polymer, a method of preparing the same, and a rubber composition including the same, and more specifically provides a rubber composition which includes a repeating unit derived from a conjugated diene-based monomer having a trans-1,4 bond content of 80 wt % or more and a functional group derived from an alkoxysilane-based modifier, a method of preparing the same, and a rubber composition including the same.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: June 9, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyung Chang Seo, No Ma Kim, Sang Mi Lee, Yu Jin Kim
  • Publication number: 20200165522
    Abstract: A liquid crystal alignment agent composition for producing a liquid crystal alignment film having enhanced alignment property and stability and a high voltage holding ratio, a method of producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same, are provided.
    Type: Application
    Filed: October 10, 2018
    Publication date: May 28, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Seongku KIM, Sung Joon MIN, Hoonseo PARK, Hyeong Seuk YUN, Sang Mi LEE, Jung Ho JO
  • Publication number: 20200157382
    Abstract: The present invention relates to a slurry composition for polishing a tungsten barrier layer. A slurry composition for polishing a tungsten barrier layer according to an embodiment of the present invention comprises abrasive grains and a sulfur-containing amino acid, and can improve edge over erosion (EOE).
    Type: Application
    Filed: June 16, 2017
    Publication date: May 21, 2020
    Applicant: KCTECH CO.,LTD.
    Inventors: Han Teo PARK, Hyun Goo KONG, Sang Mi LEE
  • Publication number: 20200148794
    Abstract: The present invention relates to a modified conjugated diene-based polymer containing a functional group derived from a tertiary amine compound represented by Formula 1, a method of preparing the same, and a tertiary amine compound represented by Formula 1.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 14, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sang Mi Lee, Hae Sung Sohn, Heung Yeal Choi, No Ma Kim
  • Patent number: 10538601
    Abstract: The present invention provides an azasilane-based modifier of Formula 1, which may easily introduce a functional group having affinity with a filler into a conjugated diene-based polymer chain, a modified and conjugated diene-based polymer including the functional group derived from the azasilane-based modifier, a method for preparing the modified and conjugated diene-based polymer, a rubber composition including the modified and conjugated diene-based polymer, and a molded article and a tire manufactured from the rubber composition.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Ho Young Lee, No Ma Kim, Sang Mi Lee, Da Won Chai
  • Patent number: 10533062
    Abstract: The present invention provides a modified conjugated diene-based polymer which includes a functional group derived from a substituted styrene-based compound and a functional group derived from an aminosilane-based compound, a method for preparing the same, and a rubber composition including the same. The modified conjugated diene-based polymer includes the functional group derived from an aminosilane-based compound of Formula 1 and a functional group derived from a substituted styrene-based compound of Formula 2 at both terminals of a main chain, and thus, shows a high modification ratio. When applying the polymer in a rubber composition, excellent affinity with a filler may be shown, and as a result, agglomeration of a filler in the rubber composition may be prevented, and the dispersibility of the filler may be increased, thereby improving the processability of the rubber composition.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: January 14, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hae Sung Sohn, No Ma Kim, Jin Young Kim, Kyung Chang Seo, Sang Mi Lee
  • Publication number: 20200002478
    Abstract: The present invention relates to a polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent containing the same, a liquid crystal aligning film formed from the liquid crystal alignment agent, and a liquid crystal display device containing the liquid crystal aligning film.
    Type: Application
    Filed: May 14, 2018
    Publication date: January 2, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Kichul KOO, Jung Ho JO, Sung Joon MIN, Sang Mi LEE, Jun Young YOON, Hyeong Seuk YUN, Yoon Bin LIM
  • Publication number: 20200002614
    Abstract: The present invention provides a liquid crystal aligning agent composition that has excellent storage stability, can secure a high imidization rate, and can produce a liquid crystal alignment film having improved film strength together with liquid crystal alignment properties, a method for producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Application
    Filed: June 26, 2018
    Publication date: January 2, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sang Mi LEE, Jung Ho JO, Hang Ah PARK, Hyeong Seuk YUN, Jun Young YOON
  • Publication number: 20190390116
    Abstract: The present invention relates to a liquid crystal aligning agent composition capable of securing a high imidization rate under relatively mild curing conditions, minimizing side reactions and thus having excellent stability, a method for producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Application
    Filed: June 26, 2018
    Publication date: December 26, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Jung Ho JO, Hee HAN, Sung Joon MIN, Hang Ah PARK, Sang Mi LEE, Soon Ho KWON, Jun Young YOON, Hyeong Seuk YUN, Seongku KIM
  • Patent number: 10508157
    Abstract: The present invention relates to a rubber modifier, a conjugated diene-based polymer including a functional group derived from the modifier, and a method for preparing a modified and conjugated diene-based polymer using the modifier. The modifier is used as the modifier of a conjugated diene-based polymer and combined with a conjugated diene-based polymer chain to easily introduce a functional group having affinity with a filler. Accordingly, a modified and conjugated diene-based polymer prepared using a compound of the rubber modifier may have excellent affinity with a filler, and as a result, molded articles (for example, tires) manufactured from a rubber composition including the polymer may have excellent tensile strength, abrasion resistance, and wet traction.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 17, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sang Mi Lee, Jin Young Kim
  • Patent number: 10450453
    Abstract: The present disclosure relates to a thermoplastic graft copolymer resin, a method of preparing the same, and a thermoplastic resin composition including the same. More particularly, the present invention relates to a thermoplastic graft copolymer resin including a seed, an alkyl acrylate rubber core enclosing the seed, and a shell enclosing the rubber core, a method of preparing the same, and a thermoplastic resin composition including the same, wherein the thermoplastic graft copolymer resin has a gel content of 93% by weight or more and a swelling index of 6 to 14. In accordance with the present disclosure, a thermoplastic graft copolymer resin exhibiting excellent chemical resistance, heat resistance, and impact resistance, a method of preparing the same, and a thermoplastic resin composition including the same are provided.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 22, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Kang, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Chun Ho Park, Sang Mi Lee, Yeong Min Lee
  • Publication number: 20190256778
    Abstract: The present invention relates to a liquid crystal aligning agent composition for forming a liquid crystal alignment film exhibiting excellent alignment and electrical characteristics and simultaneously having excellent film strength, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Application
    Filed: August 9, 2018
    Publication date: August 22, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Seongku KIM, Hee HAN, Jung Ho JO, Sung Joon MIN, Sang Mi LEE, Soon Ho KWON, Jun Young YOON, Hyeong Seuk YUN, Hoonseo PARK
  • Publication number: 20190256635
    Abstract: The present invention relates to a method for preparing a modified conjugated diene-based polymer, and more particularly, provides a method for preparing a modified conjugated diene-based polymer including a step of polymerizing a conjugated diene-based monomer in the presence of an organometal compound in a hydrocarbon solvent to prepare an active polymer which is coupled with an organometal (S1); and a step of reacting or coupling the active polymer prepared in step (S1) with a modifier (S2), wherein step (S1) is continuously performed in two or more polymerization reactors, and a polymerization conversion ratio in a first reactor among the polymerization reactors is 50% or less.
    Type: Application
    Filed: December 7, 2017
    Publication date: August 22, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jin Young Kim, Jun Seok Ko, No Ma Kim, Yu Jin Kim, Ki Seok Son, Hae Sung Sohn, Ro Mi Lee, Sang Mi Lee, Tae Chul Lee, He Seung Lee
  • Patent number: 10364344
    Abstract: The present disclosure relates to a thermoplastic resin composition and a molded article manufactured from the same. More particularly, the present disclosure relates to a thermoplastic resin composition including 10 to 59% by weight of an acrylic graft copolymer resin (a) having a graft efficiency of 50 to 95%; 1 to 20% by weight of an acrylic graft copolymer resin (b) having a graft efficiency of 5 to 49%; and 21 to 89% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin (c), wherein a weight ratio of (a):(b) is 1:1 to 10:1, and a molded article manufactured from the same. In accordance with the present disclosure, a thermoplastic resin composition that exhibits glossy effect by injection molding and matte effect by extrusion molding while providing superior mechanical strength and thus is applicable to both glossy products and matte products, and a molded article manufactured from the same are provided.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 30, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Chun Ho Park, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang
  • Patent number: 10351699
    Abstract: The present disclosure relates to a thermoplastic resin composition providing superior low-gloss characteristic, weather resistance, and mechanical properties and an extruded article manufactured from the same. More particularly, the present invention relates to a thermoplastic resin composition including 40 to 70% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer as a matrix resin; 20 to 40% by weight of an acrylic graft copolymer (a) in which 46 to 95% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer is grafted to 5 to 54% by weight of a (meth)acrylate-based rubbery polymer having an average particle diameter of 0.05 to 1 ?m; 1 to 10% by weight of an acrylic graft copolymer (b) in which 5 to 45% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer is grafted to 55 to 95 % by weight of a (meth)acrylate-based rubbery polymer having an average particle diameter of 0.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 16, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Chun Ho Park, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang
  • Publication number: 20190153124
    Abstract: The present invention relates to a modified conjugated diene-based polymer, a method of preparing the same, and a rubber composition including the same, and more specifically provides a rubber composition which includes a repeating unit derived from a conjugated diene-based monomer having a trans-1,4 bond content of 80 wt % or more and a functional group derived from an alkoxysilane-based modifier, a method of preparing the same, and a rubber composition including the same.
    Type: Application
    Filed: July 5, 2017
    Publication date: May 23, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Kyung Chang Seo, No Ma Kim, Sang Mi Lee, Yu Jin Kim