Patents by Inventor Hyun-Min Kim

Hyun-Min 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).

  • Polyalkylene carbonate-based resin film
    Patent number: 10941261
    Abstract: The disclosed relates to a polyalkylene carbonate-based resin film. More specifically, the present disclosure relates to a polyalkylene carbonate resin-based film comprising a blend resin in which a polyalkylene carbonate resin and a polyketone resin are mixed in a specified amount, thereby ensuring both excellent tensile strength and tear strength without deteriorating elongation properties possessed by the polyalkylene carbonate resin.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: March 9, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Min Kim, Hyun Ju Cho, Sung-Kyoung Kim, Seung Young Park
  • Apparatus and method for forming pouch case for secondary battery
    Patent number: 10933575
    Abstract: An apparatus and method are provided for forming a pouch case with improved forming quality and minimized surface contact between the forming apparatus and the pouch case in the forming process to form a pouch cup. The apparatus includes a mold on which a pouch case with a plate shape can be placed, wherein the mold bulges upwards, a chamber open at bottom to the pouch case and the mold, the chamber having an inner space in which the mold can be received by lift-up of the mold or lift-down of the chamber, wherein the chamber is seated on an edge portion of the pouch case, and the chamber is equipped with a fluid input valve at top and a fluid output valve at bottom, and a fluid supply unit configured to supply a fluid via the fluid input valve to carry out pressure forming of the pouch case.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: March 2, 2021
    Inventors: Sei-Woon Oh, Sun-Hwak Woo, Soo-Ji Hwang, Hyun-Min Kim, Eun-Ju Lee
  • Poly(alkylene carbonate) resin composition, preparation method thereof, molded article formed therefrom, and preparation method of molded article using the same
    Patent number: 10865274
    Abstract: Provided are a poly(alkylene carbonate) resin composition having improved mechanical properties, heat resistance, and processability, a preparation method of the poly(alkylene carbonate) resin composition, a molded article formed by using the composition, and a preparation method of the molded article, in which the poly(alkylene carbonate) resin composition includes poly(alkylene carbonate) having a weight average molecular weight of 100,000 g/mol to 500,000 g/mol and polyamide having a melting point of 180° C. to 194° C. at a weight ratio of 95:5 to 75:25.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: December 15, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Kyoung Kim, Hyun Min Kim, Hyun Ju Cho, Seung Young Park
  • ELECTRODE ASSEMBLY AND SECONDARY LITHIUM BATTERY INCLUDING THE SAME
    Publication number: 20200388852
    Abstract: Disclosed are an electrode assembly, and a secondary lithium battery including the same. The electrode assembly is configured by alternately stacking two or more positive electrodes and one or more negative electrodes using a separator as a boundary therebetween, outermost positive electrodes are positioned on outermost opposite surfaces of the electrode assembly, respectively, each of the outermost positive electrodes includes a positive electrode current collector, a positive active material layer formed on one surface of the positive electrode current collector, and a non-reversible material coating layer formed on the other surface of the positive electrode current collector and including lithium oxide, and the non-reversible material coating layer is positioned on an outermost surface of the electrode assembly.
    Type: Application
    Filed: November 30, 2018
    Publication date: December 10, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jooyong SONG, In Chul KIM, Juri KIM, Hyun Min KIM
  • Secondary Battery
    Publication number: 20200358042
    Abstract: A secondary battery according to the present invention comprises an electrode assembly in which an electrode and a separator are alternately stacked and a battery case accommodating the electrode assembly therein, wherein the battery case comprises a stepped part that is disposed to be stepped, an outer surface of the battery case is sealed to allow a folded part to be seated on the outer surface of the stepped part, and the electrode assembly comprises a stepped protrusion that is stepped in a shape corresponding to an inner surface of the stepped part disposed on the battery case.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 12, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sei Woon Oh, Jung Ah Shim, Hyun Min Kim, Seong Yoon Lim
  • Economical method of preparing a resin composition including polyalkylene carbonate with improved thermal stability and processability
    Patent number: 10829635
    Abstract: The present disclosure relates to an economical method of preparing a resin composition including a polyalkylene carbonate with improved thermal stability and processability. More specifically, the method of preparing a resin composition includes the steps of polymerizing carbon dioxide and an epoxide compound in the presence of a zinc-based catalyst and a solvent, recovering monomers, removing the catalyst and recovering raw materials, solution-blending with a thermostable resin to improve the thermal stability and processability, and removing the solvent and byproducts from the reaction mixture by using an agitated flash drum and an extrusion or kneader-type devolatilizer.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: November 10, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jun Wye Lee, Seung Young Park, Jin Woo Lee, Hyun Ju Cho, Jung Min Sohn, Yoon Jung Kim, Bo Hyun Seong, Taek Jun Jung, Yun Ki Cho, Yong Hee An, Sung-Kyoung Kim, Hyun Min Kim
  • Electrode with improved adhesion property for lithium secondary battery, and manufacturing method thereof
    Patent number: 10811687
    Abstract: The present invention relates to a secondary battery electrode including: a collector positioned between an external wire and an electrode active material to transfer electrons; and an electrode mixture layer coated on the collector, wherein the electrode mixture layer includes a cross-linked polymer, an electrode active material, and a binder, and the cross-linked polymer is formed by a cross-linked bond between a first polymerization unit and a second polymerization unit to have an interpenetrating polymer network (IPN), and a manufacturing method thereof.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: October 20, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Min Kim, Hee Seok Jeong, Ju Ri Kim, Sei Woon Oh
  • Electrode assembly having indented portion formed on electrode plate, and secondary battery including same
    Patent number: 10811665
    Abstract: The present invention relates to an electrode assembly including at least two electrode plates and a separator interposed between the electrode plates, wherein indented portions are formed from lower ends of opposite sides of the electrode tab in an opposite direction to an externally extending direction of the electrode tab in a side of the electrode body in which the electrode tab externally extends, in the electrode plates.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: October 20, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sei Woon Oh, Hyun Min Kim, Eun Ju Lee, Sun Hwak Woo
  • Secondary battery
    Patent number: 10790477
    Abstract: A secondary battery according to the present invention comprises an electrode assembly in which an electrode and a separator are alternately stacked and a battery case accommodating the electrode assembly therein, wherein the battery case comprises a stepped part that is disposed to be stepped, an outer surface of the battery case is sealed to allow a folded part to be seated on the outer surface of the stepped part, and the electrode assembly comprises a stepped protrusion that is stepped in a shape corresponding to an inner surface of the stepped part disposed on the battery case.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: September 29, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sei Woon Oh, Jung Ah Shim, Hyun Min Kim, Seong Yoon Lim
  • Pouch type of battery cell having unit electrode where a plurality of electrode tabs are formed
    Patent number: 10784490
    Abstract: The present invention provides a battery cell including: an electrode assembly having a structure in which a positive electrode, a negative electrode, and a separator are laminated, each of the positive electrode and the negative electrode having 2×n (n?2), wherein a positive tab is provided in each of odd-numbered sides, and a negative electrode tab is provided in each of even-numbered sides, and the positive electrodes and the negative electrode tabs are alternately formed along the sides; electrode terminals respectively disposed on a first side and a second side of the electrode assembly, in which outermost electrodes are disposed, or third sides which are side surfaces of the electrode assembly, being perpendicular to the first side and the second side, and a battery case having a structure of surrounding an external surface of the electrode assembly.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: September 22, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hee Seok Jeong, Hyun Min Kim, Ju Ri Kim, Sei Woon Oh
  • NEGATIVE ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20200243848
    Abstract: A negative electrode including: a current collector; a first negative electrode active material layer positioned on at least one surface of the current collector for a negative electrode and containing a first carbonaceous active material; and a second negative electrode active material layer positioned on a surface of the first negative electrode active material layer and containing a silicon-based active material and carbon nanotubes. A lithium secondary battery including the negative electrode is also disclosed.
    Type: Application
    Filed: November 30, 2018
    Publication date: July 30, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hyun-Min KIM, Min-Kyung KIM, Jong-Heon SEOL, Ki-Won SUNG, Myung-Ki LEE, Eun-Ju LEE, Young-Eun CHOI
  • Secondary battery comprising gas-absorbing polymer
    Patent number: 10727541
    Abstract: The present invention provides a secondary battery in which an electrode assembly is sealed within a battery case together with an electrolyte, wherein a gas-absorbing polymer having an azo group is included in the battery cell so as to absorb gas generated within the battery.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 28, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sei Woon Oh, Hyun Min Kim, Sun Hwak Woo
  • Battery Case Having Gas Adsorption Layer
    Publication number: 20200185794
    Abstract: Disclosed herein is a battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case including a layer structure and a gas adsorption layer formed on the inner surface of the layer structure, the gas adsorption layer including a gas adsorption material layer configured to adsorb a reaction gas that may be generated within the battery case during abnormal functioning of the electrode assembly, and and a blocking layer formed on an exposed surface of the gas adsorption material layer, the blocking layer configured to prevent the gas adsorption material layer from being exposed to an ambient gas during assembly of the battery case.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 11, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hee Seok Jeong, Eun Ju Lee, Hyun Min Kim, Jong Hwan Choi
  • Electrode assembly including coupling part between electrode tabs and electrode lead located in space portion
    Patent number: 10615398
    Abstract: Disclosed herein are an electrode assembly including a plurality of unit cells arranged in a height direction on the basis of a plane, at least two of the unit cells having different planar sizes, and a space portion defined by the difference in planar size between the arranged unit cells, wherein each of the unit cells includes at least one electrode plate, electrode tabs protruding from the electrode plates of the unit cells are electrically connected to an electrode lead via a tab-lead coupling part, and the tab-lead coupling part is located in the space portion, and a battery cell including the same.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 7, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sei Woon Oh, Seong Yoon Lim, Hyun Min Kim, Jung Ah Shim, Ho Sub Lee, Jung Hwa Jung
  • POLYALKYLENE CARBONATE-BASED RESIN FILM
    Publication number: 20200056003
    Abstract: The disclosed relates to a polyalkylene carbonate-based resin film. More specifically, the present disclosure relates to a polyalkylene carbonate resin-based film comprising a blend resin in which a polyalkylene carbonate resin and a polyketone resin are mixed in a specified amount, thereby ensuring both excellent tensile strength and tear strength without deteriorating elongation properties possessed by the polyalkylene carbonate resin.
    Type: Application
    Filed: December 27, 2017
    Publication date: February 20, 2020
    Inventors: Hyun Min KIM, Hyun Ju CHO, Sung-Kyoung KIM, Seung Young PARK
  • Positive Electrode And Lithium Secondary Battery Including The Same
    Publication number: 20200052291
    Abstract: A positive electrode, and a lithium secondary battery including the positive electrode, are provided. Specifically, the positive electrode may effectively counterbalance an irreversible capacity imbalance between two electrodes and further increase the initial charge capacity of the positive electrode by double-coating a positive electrode collector with a positive electrode active material and a lithium oxide-based compound.
    Type: Application
    Filed: November 27, 2018
    Publication date: February 13, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jooyong Song, In Chul Kim, Juri Kim, Hyun Min Kim
  • POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERING INCLUDING SAME
    Publication number: 20190393507
    Abstract: The present disclosure relates to a positive electrode for a lithium secondary battery comprising a positive electrode current collector and a positive electrode active material layer coated and formed on at least one surface of the positive electrode current collector, wherein the positive electrode current collector includes a non-coated portion protruded with no positive electrode active material layer coated thereon, and wherein an irreversible material composed of lithium oxide is coated on the non-coated portion, and a lithium secondary battery including the same.
    Type: Application
    Filed: November 30, 2018
    Publication date: December 26, 2019
    Inventors: Jooyong Song, In Chul Kim, Juri Kim, Hyun Min Kim
  • METHOD OF PREPARING ACRYLONITRILE-BASED POLYMER FOR PRODUCING CARBON FIBER
    Publication number: 20190375870
    Abstract: A method of preparing an acrylonitrile-based copolymer for a carbon fiber. The method includes: preparing a reaction solution including a (meth)acrylonitrile-based monomer and a first reaction solvent; adding a first portion of a radical polymerization initiator to the reaction solution to initiate polymerization; and adding a second portion of the radical polymerization initiator to the reaction solution when a polymerization conversion ratio is between 70 to 80%.
    Type: Application
    Filed: September 18, 2018
    Publication date: December 12, 2019
    Inventors: Chang Hun KIM, Hyun Min KIM, Jeong Hun CHO, Joon Hee CHO
  • Audio apparatus, method of processing audio signal, and a computer-readable recording medium storing program for performing the method
    Patent number: 10462596
    Abstract: An audio apparatus and a method of processing an audio signal of the audio apparatus are provided. The method includes: receiving a main audio and an interactive audio; panning the interactive audio by using position information of a user, sound source position information of the interactive audio, and speaker position information; rendering the panned interactive audio according to a space characteristic of the main audio; and mixing and outputting the rendered interactive audio and the main audio to provide the user with a more lively interactive audio.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: October 29, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-bae Chon, Sun-min Kim, Jae-ha Park, Hyun-min Kim, Jeong-su Kim
  • METHOD OF PREPARING (METH)ACRYLONITRILE-BASED POLYMER FOR PREPARING CARBON FIBER
    Publication number: 20190315889
    Abstract: The present invention relates to a method of preparing a (meth)acrylonitrile-based polymer for preparing a carbon fiber, which comprises adding a reaction solution comprising a (meth)acrylonitrile-based monomer and a reaction solvent to a reactor to perform solution polymerization, performing solution polymerization under a condition in which a power consumption of the reactor is 1 to 5 kW/m3 when the reaction solution in the reactor has a viscosity of 0.1 poise or more and 250 poise or less, and performing solution polymerization under a condition in which a power consumption of the reactor is 8 to 13 kW/m3 when the reaction solution in the reactor has a viscosity of more than 250 poise and 450 poise or less.
    Type: Application
    Filed: September 14, 2018
    Publication date: October 17, 2019
    Inventors: Jeong Hun CHO, Young Soo SONG, Hyun Min KIM, Chang Hun KIM, Hyo Yong KIM, Joon Hee CHO