Patents by Inventor Il-Doo Kim

Il-Doo 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).

  • Publication number: 20220170899
    Abstract: Provided is a method of producing a metal nanoparticle-oxide support complex structure, in which metal nanoparticles uniform in size are evenly distributed on the surface of oxide supports. A gas sensor with improved gas sensing ability and durability may be provided by using the same.
    Type: Application
    Filed: August 25, 2021
    Publication date: June 2, 2022
    Inventors: WooChul JUNG, Il-Doo KIM, Jun Kyu Kim, Ji-Soo JANG
  • Publication number: 20220023838
    Abstract: A member for a metal oxide nanofiber based gas sensor can include a metal nanoparticle catalyst and can be formed to be functionalized by binding the metal nanoparticle catalyst and an alkali or alkaline earth metal through electrospinning and heat treatment processes. The member can detect a trace amount of a gas with high selectivity and ultra-high sensitivity by uniformly binding the alkali or alkaline earth metal and the metal nanoparticle catalyst through electrospinning and high-temperature heat treatment.
    Type: Application
    Filed: May 17, 2021
    Publication date: January 27, 2022
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Won Jong Jung, Il Doo Kim, Kak Namkoong, Dong Ha Kim, Yeol Ho Lee, Joon Hyung Lee, Ki Young Chang, Ji Soo Jang, Ha Min Shin, Yoon Hwa Kim
  • Publication number: 20210344287
    Abstract: Embodiments of the disclosure relate to a novel concept complex generator enabling high-efficient power generation by applying a polar solution to a MXene layer-coated hydrophilic fiber membrane-based complex generator, and a manufacturing method thereof. Specifically, a MXene layer-coated hydrophilic fiber membrane-based electrical energy generation device uniformly applies MXene particles to fiber strand surfaces of hydrophilic fiber membranes through a dipping process to form a MXene layer.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 4, 2021
    Inventors: Il-Doo KIM, Jaehyeong BAE, Min Soo KIM
  • Patent number: 11099147
    Abstract: Disclosed are a gas sensor member, a gas sensor using the same, and manufacturing methods thereof, and specifically, a gas sensor member using a one-dimensional porous metal oxide nanotube composite material having a double average pore distribution in which mesopores (0.1 nm to 50 nm) and macropores (50 nm to 300 nm) are simultaneously formed on the surface of a nanotube through decomposition of a spherical polymer sacrificial template and continuous crystallization and diffusion of a metal oxide and a nanoparticle catalyst embedded in an apoferritin is uniformly loaded in the inside and on the outer wall and inner wall of a one-dimensional metal oxide nanotube through a high-temperature heat treatment, a gas sensor using the same, and manufacturing methods thereof are disclosed.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: August 24, 2021
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Il-Doo Kim, Ji Su Jang, Sang-Joon Kim, Seon-Jin Choi
  • Publication number: 20210196582
    Abstract: The present disclosure relates to a metal material extraction sheet. According to an aspect of the disclosure, the metal material extraction sheet having a predetermined area may be provided, wherein dopamine whose color is changed when reacting with a metal material is provided on at least a part of the outer surface of the metal material extraction sheet.
    Type: Application
    Filed: December 29, 2020
    Publication date: July 1, 2021
    Applicant: Amorepacific Corporation
    Inventors: Jeong Eun SEO, Hyoung June KIM, Il Doo KIM, Jae Hyeong BAE, Doo Young YOUN
  • Patent number: 10913032
    Abstract: Disclosed is a 1D nanofibers quasi-aligned, grid structure cross-laminated, and pore distribution and size controlled 3D polymer nanofiber membrane, and manufacturing method thereof. A 3D polymer nanofiber membrane controlled in pore size and porosity is formed by employing an electrospinning pattern forming apparatus that includes double insulating blocks quasi-aligns nanofibers in a specific direction by transforming an electric field and includes a current collector rotatable in 90°. Additionally, the 3D polymer nanofiber membrane may be used for air filters, separator, water filters, cell culture membranes, and so on by allowing various properties thereto through a functional surface coating.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 9, 2021
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Il-Doo Kim, Chanhoon Kim, Su Ho Cho, Won Tae Hwang
  • Publication number: 20200256838
    Abstract: Systems and methods using engineered nanofiltration layers to facilitate acceleration of palladium nanowire hydrogen sensors. The sensors include a metal-organic framework (MOF) assembled on palladium (Pd) nanowires (NWs) for highly selective and ultra-fast H2 molecule detection.
    Type: Application
    Filed: February 14, 2020
    Publication date: August 13, 2020
    Inventors: Reginald M. Penner, Won-Tae Koo, Il-Doo Kim
  • Patent number: 10714759
    Abstract: Disclosed is an electrode for lithium-air batteries without using a binder and a carbon additive and a method of manufacturing the same, and more specifically, provided is a nanofiber network-based current collector-catalyst monolithic porous air electrode which has an improved specific surface area and high air permeability as the energy density per weight is increased and the diameter, porosity, and thickness of the nanofibers are controlled by utilizing a significantly light polymer and carbon based material.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: July 14, 2020
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Il-Doo Kim, Ji Won Jung, Ki Ro Yoon, Dae Ho Yoon, Yong Joon Park
  • Publication number: 20200203486
    Abstract: Provided is a method for manufacturing a doped graphene thin film having a mesoporous structure using a flash lamp, which comprises: a step of coating a mixture solution of a doping element source-containing material comprising a doping element and graphene oxide on a substrate; and a step of irradiating light to the coated mixture solution using a flash lamp, thereby carrying out reduction of the graphene oxide and doping of the doping element at the same time.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Sung-Yool CHOI, Jun-Hwe CHA, Il-Doo KIM
  • Patent number: 10644326
    Abstract: A lithium-air battery catalyst having a 1D polycrystalline tubes structure of a ruthenium oxide-manganese oxide complex includes the ruthenium oxide-manganese oxide complex having at least one polycrystalline tubes structure among a core fiber-shell patterned nanotubes structure and a double walls patterned composite double tubes structure, and the ruthenium oxide-manganese oxide complex is formed as an air electrode catalyst.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: May 5, 2020
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Il-Doo Kim, Ki Ro Yoon
  • Publication number: 20200110066
    Abstract: Disclosed is a colorimetric gas sensor using a complex polymer nanofiber structure for yarn-based gas indication, in which ionic liquids as effective gas adsorbents and color change dyes having varying colors have been functionalized in a nanofiber and a method of fabricating the same. In the fabrication method, after the ionic liquids and color change dyes are mixed with a polymer solution in which high-temperature stirring and quenching processes are accompanied to prepare fine crystals of color change dyes. Accordingly, the dual-electro-spinning process is conducted to produce the nanofiber yarn scaffold on which ionic liquids and color change dyes are finely functionalized.
    Type: Application
    Filed: October 7, 2019
    Publication date: April 9, 2020
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: IL-DOO KIM, Dong-Ha KIM, Chanhoon KIM
  • Patent number: 10613068
    Abstract: Disclosed are polymer nanofiber sensors for detecting gas, which generates visible color change although a specific gas having a concentration of less than 1 ppm is exposed to the sensor in a short time, in which it is impossible to detect the gas using existing colorimetric sensors, through securing high surface area and porosity, and a method of the same.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: April 7, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il-Doo Kim, Jun Hwe Cha, Won-Tae Koo
  • Patent number: 10533987
    Abstract: The inventive concepts relate to a member for a gas sensor, a gas sensor using the same, and a method of manufacturing the same. More particularly, the inventive concepts relate to a gas sensor member using a porous semiconductor metal oxide complex nanofiber functionalized by uniformly distributing porous first metal oxide particles, including metal nanoparticle catalysts synthesized using a metal-organic framework, in the inside and on a surface of a second metal oxide nanofiber, a gas sensor using the same, and a method of manufacturing the same.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: January 14, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il-Doo Kim, Wontae Koo, Jisu Jang
  • Publication number: 20190391101
    Abstract: Disclosed are a member for a gas sensor, a gas sensor using the member, and a method of fabricating the same. Specifically, disclosed are a member for a gas sensor using a metal oxide nanofiber material in which nanocatalysts have been uniformly bound and functionalized using chitosans with which nanoparticle catalysts have been combined, a gas sensor using the member, and a method of fabricating the same.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Inventors: Il-Doo KIM, Yong Jin JEONG, Won-Tae KOO, Ji-Soo JANG
  • Publication number: 20190227016
    Abstract: Disclosed are a gas sensor member, a gas sensor using the same, and manufacturing methods thereof, and specifically, a gas sensor member using a one-dimensional porous metal oxide nanotube composite material having a double average pore distribution in which mesopores (0.1 nm to 50 nm) and macropores (50 nm to 300 nm) are simultaneously formed on the surface of a nanotube through decomposition of a spherical polymer sacrificial template and continuous crystallization and diffusion of a metal oxide and a nanoparticle catalyst embedded in an apoferritin is uniformly loaded in the inside and on the outer wall and inner wall of a one-dimensional metal oxide nanotube through a high-temperature heat treatment, a gas sensor using the same, and manufacturing methods thereof are disclosed.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 25, 2019
    Inventors: Il-Doo KIM, Ji Su JANG, Sang-Joon KIM, Seon-Jin CHOI
  • Publication number: 20190148085
    Abstract: Disclosed herein is a complex generator including a hydrophilic fiber membrane coated with an adsorption material. Electrical energy is generated in such a manner that the adsorption material is adsorbed onto a polar solvent in some region of the hydrophilic fiber membrane by asymmetrical wetting of the polar solvent for the hydrophilic fiber membrane.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 16, 2019
    Inventors: Il-Doo Kim, Tae-Gwang Yun, Jin Gook Bae
  • Patent number: 10274446
    Abstract: Disclosed are a gas sensor member, a gas sensor using the same, and manufacturing methods thereof, and specifically, a gas sensor member using a one-dimensional porous metal oxide nanotube composite material having a double average pore distribution in which mesopores (0.1 nm to 50 nm) and macropores (50 nm to 300 nm) are simultaneously formed on the surface of a nanotube through decomposition of a spherical polymer sacrificial template and continuous crystallization and diffusion of a metal oxide and a nanoparticle catalyst embedded in an apoferritin is uniformly loaded in the inside and on the outer wall and inner wall of a one-dimensional metal oxide nanotube through a high-temperature heat treatment, a gas sensor using the same, and manufacturing methods thereof are disclosed.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: April 30, 2019
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Il-Doo Kim, Ji Su Jang, Sang-Joon Kim, Seon-Jin Choi
  • Patent number: 10164253
    Abstract: Provided are conductive single crystal silicon particles coated with highly conductive carbon containing nanopores and an ultrathin metal film, a high capacity anode material including the same, and a preparing method thereof. The anode material includes conductive single crystal silicon particles each on which at least one element selected from group-III and group-V elements is doped; a thin metal layer formed to coat the surface of each of the conductive single crystal silicon particles; and a highly conductive carbon coating layer formed on the thin metal layer, wherein nanopores are formed between the conductive single crystal silicon particle and the carbon coating layer.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: December 25, 2018
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il-Doo Kim, Chan Hoon Kim
  • Publication number: 20180015423
    Abstract: Disclosed is a 1D nanofibers quasi-aligned, grid structure cross-laminated, and pore distribution and size controlled 3D polymer nanofiber membrane, and manufacturing method thereof. A 3D polymer nanofiber membrane controlled in pore size and porosity is formed by employing an electrospinning pattern forming apparatus that includes double insulating blocks quasi-aligns nanofibers in a specific direction by transforming an electric field and includes a current collector rotatable in 90°. Additionally, the 3D polymer nanofiber membrane may be used for air filters, separator, water filters, cell culture membranes, and so on by allowing various properties thereto through a functional surface coating.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 18, 2018
    Inventors: Il-Doo Kim, Chanhoon Kim, Su Ho Cho, Won Tae Hwang
  • Patent number: 9842666
    Abstract: Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: December 12, 2017
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il Doo Kim, Yong-Won Song, Jae-Min Hong