Patents by Inventor Hee Tak Kim

Hee Tak 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).

  • Patent number: 11945968
    Abstract: Disclosed are an anti-fingerprint film for automobile interiors and methods of producing the same. The anti-fingerprint film for automobile interior parts may include a base layer and an outermost layer located on the base layer including a fluorine-based compound, thus reducing the attachment area of the fingerprint composed of water and oil by virtue of the outermost layer having high water and oil repellency, ultimately removing fingerprint visibility.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: April 2, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Hyun Jung Kim, Jae Sik Seo, Ho Tak Jeon, Hee Do Kim, Hyun Don Kim, Seong Uk Juen
  • Patent number: 11922302
    Abstract: Provided are a hyperparameter optimizer and method for optimizing hyperparameters and a spiking neural network processing unit. The optimizer includes a statistical analyzer configured to receive training data and perform statistical analysis on the training data, an objective function generator configured to generate hyperparameter-specific objective functions by using a statistical analysis value of the statistical analyzer, and an optimal hyperparameter selector configured to select optimal hyperparameters according to certain rules on the basis of the hyperparameter-specific objective functions.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: March 5, 2024
    Assignee: Korea Electronics Technology Institute
    Inventors: Seok Hoon Jeon, Byung Soo Kim, Hee Tak Kim, Tae Ho Hwang
  • Patent number: 11915880
    Abstract: A multilayer electronic component includes a body including a plurality of dielectric layers, side margin portions disposed on the body, and external electrodes disposed on the body. The reliability of the multilayer electronic component is improved by controlling the contents of Si for each position of the dielectric layer and the side margin portion.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hee Sun Chun, Hyoung Uk Kim, Jae Sung Park, Hyeg Soon An, Ku Tak Lee, Eun Ha Jang
  • Patent number: 11862803
    Abstract: A radical scavenger, a manufacturing method therefor, a membrane-electrode assembly including the radical scavenger, and a fuel cell including the membrane-electrode assembly are disclosed. The membrane-electrode assembly contains an ion exchange membrane; catalyst electrodes disposed on both surfaces of the ion exchange membrane, respectively; and a radical scavenger disposed at any one position selected from the group consisting of in the catalyst electrodes, in the ion exchange membrane, between the ion exchange membrane and the catalyst electrodes, and a combination thereof.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: January 2, 2024
    Inventors: Jun-Young Kim, Moo-Seok Lee, Hee-Tak Kim, Seongmin Yuk, Dong-Hyun Lee
  • Patent number: 11682784
    Abstract: The present invention relates to a method of preparing a high-purity electrolyte solution for a vanadium redox flow battery using a catalytic reaction, and more specifically, to a method of preparing a high-purity electrolyte solution having a vanadium oxidation state of +3 to +5 from a mixture solution containing a vanadium precursor, a reducing agent, and an acidic solution, by using a catalyst. By using a catalyst and a reducing agent that does not leave impurities such as Zn2+, which are generated when preparing electrolyte solutions using an existing metal reducing agent, the high-purity electrolyte solution for a vanadium redox flow battery (VRFB) according to the present invention eliminates the need for an additional electrolysis process; does not form toxic substances during a reaction process, and thus is environmentally friendly; and is electrochemically desirable under milder process conditions than that of an existing process.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: June 20, 2023
    Assignee: LOTTE CHEMICAL CORPORATION
    Inventors: Hee-Tak Kim, Jiyun Heo
  • Publication number: 20230145094
    Abstract: The present disclosure relates to a negative electrode for a lithium secondary battery that enables the provision of a lithium secondary battery having a higher energy density and can fundamentally prevent the electrolyte decomposition reaction and the lithium dendrite formation, a method for manufacturing the same and a lithium secondary battery including the same.
    Type: Application
    Filed: July 20, 2021
    Publication date: May 11, 2023
    Applicants: LG ENERGY SOLUTION, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Keon YOON, Sunwoo HWANG, Hoejin HAH, Jung Pil LEE, Ju-Hyuk LEE, Hee-Tak KIM, Hyeokjin KWON
  • Publication number: 20230094962
    Abstract: Disclosed are an anode for a lithium secondary battery, a lithium secondary battery including the anode, and a manufacturing method thereof. In particular, the anode includes a lithium metal layer and an interfacial layer made of phosphorous-doped graphitic carbon nitride and a single ion conducting polymer.
    Type: Application
    Filed: August 30, 2022
    Publication date: March 30, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, Korea Advanced Institute of Science and Technology
    Inventors: Jong Chan Song, Jae Wook Shin, Seong Min Ha, Seung Jong Lee, Won Keun Kim, Kyoung Han Ryu, Hee Tak Kim, Young Il Roh
  • Publication number: 20230065906
    Abstract: A negative electrode for an all-solid-state battery and an all-solid-state battery including the same are provided. The negative electrode comprises a crystalline carbon layer, an amorphous carbon layer which includes a carbon defect structure formed on the crystalline carbon layer and formed of electron-deficient carbon atoms, the carbon defect structure comprising pores of nanoscale formed therein, and a solid electrolyte material formed in the pores of the amorphous carbon layer, and provides excellent contact characteristics between the negative electrode and the solid electrolyte along with improved life characteristics of the all-solid-state battery.
    Type: Application
    Filed: October 14, 2021
    Publication date: March 2, 2023
    Inventors: Jong Keon Yoon, Hoejin Hah, Hyeri Jung, Hee-Tak Kim, Ju-Hyuk Lee
  • Publication number: 20220367854
    Abstract: An anode for a lithium rechargeable battery includes an interphase layer made of phosphorus-doped graphitic carbon nitride. The anode includes a lithium metal layer and an interphase layer provided on the lithium metal layer, in which the interphase layer includes phosphorus-doped graphitic carbon nitride. The interphase layer induces the lithium growth in a plane direction and reduces the growth of dendrites and decomposition of an electrolyte.
    Type: Application
    Filed: November 24, 2021
    Publication date: November 17, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Chan Song, Jae Wook Shin, Ji Yong Lee, Seong Min Ha, Hee Tak Kim, Young Il Roh
  • Patent number: 11450894
    Abstract: A lithium metal secondary battery including: an electrode assembly including a positive electrode, a lithium metal negative electrode, a separator interposed between the positive electrode and the lithium metal negative electrode, a protective layer interposed between the lithium metal negative electrode and the separator; and a non-aqueous electrolyte injected to the electrode assembly, wherein the protective layer includes a polymer having a sulfur chain group. A battery module including the lithium metal secondary battery is also disclosed.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: September 20, 2022
    Assignees: LG ENERGY SOLUTION, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong-Keon Yoon, Kyung-Hwa Woo, Hyun-Jun Choi, Hye-Jin Lee, Hoe-Jin Hah, Hee-Tak Kim, Young-Il Roh, Hyun-Soo Jin
  • Publication number: 20220256177
    Abstract: This application relates to a display stream compression (DSC) encoding method in a DSC encoding hardware device. In one aspect, the method may include applying a DSC encoding setting variable set by a core. The method may also include reading an input video, received through a video receiver, from an image buffer in which the input video is stored. The method may further include receiving a DSC encoding operation execution command from the core and executing a DSC encoding operation on the basis of the DSC encoding setting variable.
    Type: Application
    Filed: February 7, 2022
    Publication date: August 11, 2022
    Inventors: Hee Tak KIM, Byung Soo KIM, Young Jong JANG, Tae Ho HWANG
  • Publication number: 20220231303
    Abstract: Disclosed are a fuel cell catalyst of which only a portion, which has relatively low catalytic activity and in which the greatest amount of platinum elution occurs and platinum oxide is easily formed, is selectively coated with a protective layer, and thus degradation due to the long-term operation of a fuel cell can be effectively prevented while also minimizing a deterioration in catalytic activity; a manufacturing method therefor; and a membrane-electrode assembly including same. The fuel cell catalyst of the present invention comprises: a nanoparticle containing platinum; and a protective layer which is selectively coated on only a portion of the surface of the nanoparticle and can suppress the oxidation of the platinum through electronic interaction with the nanoparticle.
    Type: Application
    Filed: June 26, 2020
    Publication date: July 21, 2022
    Inventors: Jun Young KIM, Nak-Won KONG, Kah-Young SONG, Hee-Tak KIM, Dong Wook LEE
  • Publication number: 20220209271
    Abstract: Disclosed are a radical scavenger, a method for preparing same, and a membrane-electrode assembly containing same, wherein the radical scavenger can maintain the performance of a fuel cell for a long time and enhance the lifespan thereof since the elution of metal ions derived from radical scavenging particles during fuel cell operation can be continuously prevented for a long time. The radical scavenger of the present invention comprises: radical scavenging particles; and a porous protective film on the surface of the radical scavenging particles, wherein the porous protective film comprises at least one material of high oxidative stability selected from the group consisting of silica, carbon nitride, heteroatom-doped graphene, a porphyrin-based compound, a phenazine-based compound, and derivatives thereof.
    Type: Application
    Filed: May 8, 2020
    Publication date: June 30, 2022
    Inventors: Hee-Tak KIM, Seongmin YUK, Dong Wook LEE, Kah-Young SONG, Jun Young KIM
  • Patent number: 11374234
    Abstract: The present disclosure relates to a separation membrane complex having an anion exchange membrane and a cation exchange membrane coming in face-to-face contact with each other, and the cation exchange membrane and the anion exchange membrane each having two or more concavities and convexities which interlock with each other in a reverse phase.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: June 28, 2022
    Assignees: LOTTE CHEMICAL CORPORATION, Korea Advanced Institute of Science and Technology
    Inventors: Min Suk Jung, Hye Seon Kim, Sang Sun Park, Hee-Tak Kim, Jaeho Choi, Chanyoung Choi, Taehyuk Kang
  • Patent number: 11355756
    Abstract: Provided are a positive electrode for a Zn—Br battery, a Zn—Br battery including the same, and a method of manufacturing the positive electrode for a Zn—Br battery. The positive electrode for a Zn—Br battery includes a carbon body doped with pyridinic nitrogen. The Zn—Br battery includes a negative electrode including a transition metal coated with zinc, the positive electrode; and an electrolyte. A pH of the electrolyte is in a range of 1.5 to 5.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: June 7, 2022
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hee-Tak Kim, Sang Ouk Kim, Juhyuk Lee, Year in Byun
  • Publication number: 20210344006
    Abstract: A lithium metal negative electrode and a lithium metal battery including the lithium metal negative electrode. The lithium metal negative electrode includes a protective layer present on at least one surface of the negative electrode for stabilizing between the lithium metal and the electrolyte. The protective layer includes a polymer of alpha lipoic acid (ALA) and sulfur molecule (S8), a depolymerized product of the polymer, an inorganic sulfide-based compound, and at least one of an inorganic nitride-based compound, or an inorganic nitrate-based compound.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 4, 2021
    Applicants: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Keon YOON, Yunjung KIM, Hyunwoong YUN, Sunwoo HWANG, Hoejin HAH, Hee-Tak KIM, Youngil ROH
  • Publication number: 20210288303
    Abstract: Disclosed are an electrode for secondary batteries containing a high-density carbon defect structure and a method of producing the same. The electrode can prevent deterioration of battery performance due to dendrite formation by inhibiting self-diffusion and aggregation of metal nuclei, and can exhibit an unprecedentedly high number of charge/discharge cycles and excellent energy efficiency by uniformly electrodepositing metal ions on the surface of the electrode. When the method of producing a carbon electrode for a secondary battery is used, an electrode containing a high-density carbon defect structure can be produced, and thus a battery with higher efficiency and a longer lifespan can be produced. The secondary battery comprising the electrode is useful for fields related to medium/large-scale energy storage technology, in particular, for mobile devices, automobile batteries, and renewable-energy power generation systems.
    Type: Application
    Filed: December 24, 2020
    Publication date: September 16, 2021
    Inventors: Hee-Tak KIM, Juhyuk LEE
  • Publication number: 20210249675
    Abstract: Provided is an ion-conducting layer including: an ion conductive matrix; and a 1D composite dispersed in the ion conductive matrix and oriented in a membrane thickness direction, in which the 1D composite includes a core of a non-conductive 1D nanostructure; an intermediate layer enclosing the core and having magnetic nanoparticles bonded to a surface thereof; and a surface layer conducting the same kind of ions as ions in the matrix.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 12, 2021
    Inventors: Hee-Tak KIM, Jonghyun HYUN
  • Publication number: 20210226254
    Abstract: An electrolyte solution for a lithium-sulfur battery including: a lithium salt, which includes an anion having a donor number of 15 kcal/mol of more, and a non-aqueous solvent, and a lithium-sulfur battery including the same.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 22, 2021
    Applicants: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yun Kyoung KIM, Hee Tak KIM, Doo Kyung YANG, Hyungjun NOH, Hyunwon CHU
  • Publication number: 20210142162
    Abstract: Provided are a hyperparameter optimizer and method for optimizing hyperparameters and a spiking neural network processing unit. The optimizer includes a statistical analyzer configured to receive training data and perform statistical analysis on the training data, an objective function generator configured to generate hyperparameter-specific objective functions by using a statistical analysis value of the statistical analyzer, and an optimal hyperparameter selector configured to select optimal hyperparameters according to certain rules on the basis of the hyperparameter-specific objective functions.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 13, 2021
    Inventors: Seok Hoon JEON, Byung Soo KIM, Hee Tak KIM, Tae Ho HWANG