Patents by Inventor Kwang-Jin Lee

Kwang-Jin 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).

  • Publication number: 20210032391
    Abstract: A core-shell copolymer, a method of making the same, and a thermoplastic resin composition including the same are disclosed herein. In some embodiments, a core-shell copolymer includes a core and a shell surrounding the core, the core includes a conjugated diene-based monomer-derived repeating unit and a phosphate-based cross-linking agent-derived cross-linking part represented by Formula 1, and the shell includes a first alkyl (meth)acrylate monomer-derived repeating unit, a second alkyl (meth)acrylate monomer-derived repeating unit, and a sulfonate-based ionic monomer-derived repeating unit represented by Formula 2. The core is 68 parts to 92 parts and the shell is 8 parts to 32 parts, based on 100 parts of the core-shell copolymer, the core has a swell index of 2.7 to 10.9, the shell includes 1 wt % to 16 wt % of the sulfonate-based ionic monomer-derived repeating unit, and the shell has a weight average molecular weight of 105,000 g/mol to 645,000 g/mol.
    Type: Application
    Filed: October 11, 2019
    Publication date: February 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Jin Lee, Yoon Ho Kim, Sang Il Nam, Kyung Bok Sun, Chang No Lee, Sang Hoon Han
  • Patent number: 10889660
    Abstract: A core-shell copolymer includes a core including an emulsifying initiator-derived layer derived from an emulsifying initiator, and a core forming monomer-derived repeating unit, bound to the emulsifying initiator-derived layer; and a shell including a shell forming monomer-derived repeating unit, wherein the emulsifying initiator comprising a surfactant part, an initiator part, and a vinyl monomer-derived repeating unit, the surfactant part including an organic acid-based monomer-derived repeating unit, and the initiator part including a peroxide-based monomer-derived repeating unit, wherein the emulsifying initiator has a weight average molecular weight less than 250,000 g/mol.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: January 12, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Kwang Jin Lee, Yoon Ho Kim, Ki Hyun Yoo, Chang No Lee
  • Publication number: 20200339721
    Abstract: A method for preparing a core-shell copolymer includes polymerizing a core by polymerizing 70 to 90 parts by weight of a methyl (meth)acrylate monomer and 1 part to 20 parts by weight of a C2-C12 alkyl (meth)acrylate monomer, based on 100 parts by weight of the total content of the monomer; at a point when a polymerization conversion ratio is 70% to 90% in the polymerization of the core, polymerizing the core by adding and polymerizing 1 part to 10 parts by weight of the methyl (meth)acrylate monomer and 0.04 to 0.7 parts by weight of a polyfunctional acrylic cross-linking agent; and polymerizing a core-shell copolymer by adding and polymerizing 1 to 10 parts by weight of the methyl (meth)acrylate monomer and 1 to 10 parts by weight of an aromatic vinyl monomer in the presence of the core.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 29, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Chang No Lee, Yoon Ho Kim, Sang Il Nam, Kyung Bok Sun, Kwang Jin Lee
  • Patent number: 10787534
    Abstract: A method for preparing a core-shell copolymer includes: preparing a core by polymerizing a conjugated diene-based monomer and adding an initiator including two or more peroxide-based functional groups when a polymerization conversion rate is 95% or more and less than 100%; and preparing a core-shell copolymer by polymerizing an alkyl (meth)acrylate monomer in the presence of the core and a macro initiator having a weight average molecular weight of 4,000 g/mol to 50,000 g/mol, wherein the initiator is added in an amount of more than 0 parts by weight and less than 2.5 parts by weight based on 100 parts by weight of the conjugated diene-based monomer, and the macro initiator is added in an amount of more than 0 parts by weight and less than 3.5 parts by weight based on 100 parts by weight of the alkyl (meth)acrylate monomer.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: September 29, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sang Il Nam, Yoon Ho Kim, Kwang Jin Lee, Kyung Bok Sun, Chang No Lee
  • Publication number: 20200260956
    Abstract: A system for providing open application programming interface (API)-based medical information may not only allow examination subjects to easily measure their blood pressures and check their accurate analysis results, but also health-care services and manufacturers of electronic apparatuses or portable medical devices may easily call an open API without developing a special algorithm and special system for analyzing a measured bio signal and estimating medical information, thereby easily providing processed medical information to users.
    Type: Application
    Filed: November 2, 2018
    Publication date: August 20, 2020
    Inventors: Kwang Jin LEE, Dongrae CHO, Jongin KIM
  • Patent number: 10703839
    Abstract: Provided is a method for preparing an acrylic copolymer, and more specifically, provided are a method for preparing an acrylic copolymer including: i) adding and polymerizing 50 to 80 parts by weight of a methyl (meth)acrylate monomer and 10 to 49 parts by weight of a C2-C12 alkyl (meth)acrylate monomer, based on 100 parts by weight of a total monomer content, in a reactor (S1); and ii) adding and polymerizing 1 to 10 parts by weight of the methyl (meth)acrylate monomer, more than 0.01 part by weight to less than 1 part by weight of an acrylic cross-linking agent, and a surfactant, based on 100 parts by weight of the total monomer content, in which a polymerization conversion ratio of the polymerization in step (S1) is 70% to 90% (S2), an acrylic copolymer prepared therefrom, and a resin composition including the same.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: July 7, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Chang No Lee, Yoon Ho Kim, Kwang Jin Lee, Sang Il Nam, Kyung Bok Sun
  • Patent number: 10644069
    Abstract: A memory device includes a first word line extending in a first direction on a substrate, a first bit line extending in a second direction on the first word line, a first memory cell disposed between the first word line and the first bit line, a second word line extending in the first direction on the first bit line, a second bit line extending in the second direction on the second word line, a second memory cell disposed between the second word line and the second bit line, and a first bit line connection structure connected to the first bit line and the second bit line. The first bit line connection structure includes a first bit line contact connected to the first bit line and a second bit line contact, which is connected to the second bit line and vertically overlaps the first bit line contact.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: May 5, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-Hyun Jeong, Dae-Hwan Kang, Du-Eung Kim, Kwang-Jin Lee
  • Patent number: 10606511
    Abstract: A nonvolatile memory module including a plurality of memory chips, a spare chip, and a module controller may be provided. The plurality of memory chips may be disposed on a printed circuit board (PCB), and each of the plurality of memory chips may include a plurality of nonvolatile memory cells. The spare chip may be disposed on the PCB and includes a plurality of nonvolatile memory cells. The spare chip may perform different functions according to operation modes of the plurality of memory chips. The module controller may disposed on the PCB, and control operations of the plurality of memory chips and the spare chip.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: March 31, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kwang-Jin Lee
  • Publication number: 20190324679
    Abstract: A memory system is provided and includes memory chips and a memory controller. Each of the memory chips one or more first state output pins arranged therein. The memory controller has arranged therein a first state input pin connected in a wired-AND configuration to the one or more first state output pins arranged in the memory chips. The memory controller is configured to transmit a chip enable signal and/or an initially set function command to the memory chips. Each of the memory chips outputs a first state signal having one level from among three logic levels according to a first internal operation state of the memory chip to the one or more first state output pins of the memory chip based on the chip enable signal and/or the initially set function command.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-hoon WOO, Hak-sun KIM, Kwang-Jin LEE, Su-chang JEON
  • Patent number: 10374911
    Abstract: The present disclosure is related to device management in a machine to machine (M2M) network. Particularly, the present disclosure relates to performing an efficient device management based on correlations between M2M devices in the M2M network.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: August 6, 2019
    Assignee: KT CORPORATION
    Inventors: Hwi-Jung Ryu, Mi-Kyoung Kang, Yong Kwon, Sung-Ihk Yang, Kwang-Jin Lee, Sung-Kooc Lim, Yu-Jin Huh
  • Publication number: 20190233549
    Abstract: The present invention relates to an emulsifying initiator and, more specifically, provides: an emulsifying initiator comprising a surfactant part, an initiator part, and vinyl monomer-derived repeating unit, the surfactant part comprising an organic acid-based monomer-derived repeating unit, and the initiator part including a peroxide-based monomer-derived repeating unit; and a thermoplastic resin composition comprising the same.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Jin Lee, Yoon Ho Kim, Ki Hyun Yoo, Chang No Lee
  • Patent number: 10346087
    Abstract: An apparatus for outputting an internal state of a memory apparatus and a memory system using the apparatus are provided. The apparatus includes a state signal generating circuit that generates a first signal indicating an internal operation state of the memory apparatus, and a state signal output control circuit that receives the first signal and outputs a second signal to an output pad based on a chip enable signal or an initially set function command, or both. The first signal indicates one state from among two states and the second signal indicates one state from among three states.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: July 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-hoon Woo, Hak-sun Kim, Kwang-jin Lee, Su-chang Jeon
  • Publication number: 20190185605
    Abstract: A method for preparing a core-shell copolymer includes: preparing a core by polymerizing a conjugated diene-based monomer and adding an initiator including two or more peroxide-based functional groups when a polymerization conversion rate is 95% or more and less than 100%; and preparing a core-shell copolymer by polymerizing an alkyl (meth)acrylate monomer in the presence of the core and a macro initiator having a weight average molecular weight of 4,000 g/mol to 50,000 g/mol, wherein the initiator is added in an amount of more than 0 parts by weight and less than 2.5 parts by weight based on 100 parts by weight of the conjugated diene-based monomer, and the macro initiator is added in an amount of more than 0 parts by weight and less than 3.5 parts by weight based on 100 parts by weight of the alkyl (meth)acrylate monomer.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 20, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Sang Il Nam, Yoon Ho Kim, Kwang Jin Lee, Kyung Bok Sun, Chang No Lee
  • Publication number: 20190168165
    Abstract: Disclosed is a membrane bioreactor system capable of minimizing the energy consumption while guaranteeing excellent membrane cleaning effect. According to the membrane bioreactor system of the present invention, a filtration apparatus for solid-liquid separation is provided in an aerobic tank and a portion of fine bubbles supplied to increase the dissolved oxygen of wastewater introduced into the aerobic tank are used for cleaning the membrane of the filtration apparatus.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 6, 2019
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Kwang Jin LEE, Hyoung Mo YANG
  • Publication number: 20190168168
    Abstract: Disclosed are a superhydrophobic microfiltration membrane capable of facilitating higher permeate flux without separation performance deterioration when performing a water treatment based on a membrane distillation method, a filtration module for membrane distillation comprising the same, and a method for manufacturing the same. The superhydrophobic microfiltration membrane of the present invention comprises a porous member having a plurality of fine pores having an average pore size of 1 ?m to 100 ?m and has a pure water contact angle of 130° or more.
    Type: Application
    Filed: June 16, 2017
    Publication date: June 6, 2019
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Ji Yoon LEE, Kwang-Jin LEE
  • Publication number: 20190164601
    Abstract: A memory device includes a memory cell array including a plurality of memory cells, each of the plurality of memory cells having a switch element, and a data storage element connected to the switch element and containing a phase-change material; and a memory controller for obtaining first read voltages from the plurality of memory cells, inputting a first write current to the plurality of memory cells, and then, obtaining second read voltages from the plurality of memory cells, wherein the memory controller compares the first read voltage of a first memory cell of the plurality of memory cells to the second read voltage of the first memory cell to determine a state of the first memory cell.
    Type: Application
    Filed: July 13, 2018
    Publication date: May 30, 2019
    Inventors: Tae Hui NA, Mu Hui PARK, Kwang Jin LEE, Yong Jun LEE
  • Publication number: 20190140022
    Abstract: A memory device includes a first word line extending in a first direction on a substrate, a first bit line extending in a second direction on the first word line, a first memory cell disposed between the first word line and the first bit line, a second word line extending in the first direction on the first bit line, a second bit line extending in the second direction on the second word line, a second memory cell disposed between the second word line and the second bit line, and a first bit line connection structure connected to the first bit line and the second bit line. The first bit line connection structure includes a first bit line contact connected to the first bit line and a second bit line contact, which is connected to the second bit line and vertically overlaps the first bit line contact.
    Type: Application
    Filed: September 19, 2018
    Publication date: May 9, 2019
    Inventors: JI-HYUN JEONG, Dae-Hwan Kang, Du-Eung Kim, Kwang-Jin Lee
  • Publication number: 20190063684
    Abstract: According to the present invention, a ship including a gas re-vaporizing system including a re-vaporizing apparatus, which re-vaporizes liquefied gas through seawater supplied by a seawater supply apparatus, supplies a fluid inside a seawater storage tank, which maintains pressure of seawater flowing in a circulation connection line, to the circulation connection line, in order to implement the switch of an operation mode of the seawater supply apparatus from an open loop mode to a close loop mode non-stop.
    Type: Application
    Filed: March 17, 2017
    Publication date: February 28, 2019
    Inventors: Kwang Jin LEE, Sang Min PARK
  • Publication number: 20190016838
    Abstract: Provided is a method for preparing an acrylic copolymer, and more specifically, provided are a method for preparing an acrylic copolymer including: i) adding and polymerizing 50 to 80 parts by weight of a methyl (meth)acrylate monomer and 10 to 49 parts by weight of a C2-C12 alkyl (meth) acrylate monomer, based on 100 parts by weight of a total monomer content, in a reactor (S1); and ii) adding and polymerizing 1 to 10 parts by weight of the methyl (meth) acrylate monomer, more than 0.01 part by weight to less than 1 part by weight of an acrylic cross-linking agent, and a surfactant, based on 100 parts by weight of the total monomer content, in which a polymerization conversion ratio of the polymerization in step (S1) is 70% to 90% (S2), an acrylic copolymer prepared therefrom, and a resin composition including the same.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Chang No Lee, Yoon Ho Kim, Kwang Jin Lee, Sang Il Nam, Kyung Bok Sun
  • Patent number: 10150831
    Abstract: The present disclosure relates to an acrylic processing aid and a vinyl chloride resin composition including the same, and in particular, to a core-shell-structured acrylic processing aid preparing a core using a silicone-azo macroinitiator and preparing a shell using C12 to C18 alkyl methacrylate as a co-monomer, and a vinyl chloride resin composition including the same. The acrylic processing aid is used for sheet forming of the vinyl chloride resin, and facilitates manufacture of a high-quality vinyl chloride resin formed article having excellent transparency, adhesion resistance and heat stability, having no non-dispersed melt (fish-eye) production, and having significantly reduced air mark and flow mark occurrences.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: December 11, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Kwang Jin Lee, Geon Soo Kim, Yoon Ho Kim