Patents by Inventor Young-Keun Kim

Young-Keun 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: 20250147731
    Abstract: The spin-orbit torque-based random number generator includes a spin torque generation layer including a first spin torque layer and a second spin torque layer, a magnetization-free layer, a tunnel barrier layer, and a magnetization pinned layer, wherein the second spin torque layer is disposed between the magnetization-free layer and the first spin torque layer and generates field-like torque (FLT) and damping-like torque (DLT) related to the magnetization direction of the magnetization-free layer; the first spin torque layer adjusts a torque ratio according to the size of field-like torque to the size of damping-like torque in conjunction with the thickness of the second spin torque layer; in the magnetization-free layer, a magnetization direction is randomly aligned up or down based on the adjusted torque ratio; and a random number is generated based on current that is switched and output based on the randomly aligned magnetization direction.
    Type: Application
    Filed: July 19, 2024
    Publication date: May 8, 2025
    Applicants: Korea University Research and Business Foundation, Korea Advanced Institute of Science and Technology
    Inventors: Young Keun KIM, Min Hyeok LEE, Seok In YOON, Kyung Jin LEE, Seok Jong KIM
  • Publication number: 20250068066
    Abstract: A semiconductor photoresist composition includes: an organometallic compound represented by Chemical Formula 1; and a solvent: Further, a method of forming patterns includes: forming an etching-objective layer on a substrate; coating the semiconductor photoresist composition as claimed in claim 1 on the etching-objective layer to form a photoresist layer; patterning the photoresist layer to form a photoresist pattern; and etching the etching-objective layer using the photoresist pattern as an etching mask.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 27, 2025
    Inventors: Young Keun KIM, Sukil KANG
  • Publication number: 20250054758
    Abstract: A semiconductor photoresist composition includes: an organic tin compound represented by Chemical Formula 1; and a solvent: where the detailed description of Chemical Formula 1 is as described in the specification. In addition, a method of forming patterns includes: forming an etching-objective layer on a substrate; coating the semiconductor photoresist composition on the etching-objective layer to form a photoresist layer; patterning the photoresist layer to form a photoresist pattern; and etching the etching-objective layer with the photoresist pattern as an etching mask.
    Type: Application
    Filed: July 29, 2024
    Publication date: February 13, 2025
    Inventors: Dong Wan RYU, Eunmi KANG, Young Keun Kim, Seol Hee LIM, Soobin LIM, Sukil KANG
  • Patent number: 12203154
    Abstract: Disclosed are a cobalt-tungsten alloy and a method of fabricating the same. More particularly, cobalt-tungsten alloy nanowires according to an embodiment are formed using an electroplating method, a grain structure of the cobalt-tungsten alloy nanowires is controlled according to the content of tungsten, and the electrical resistivity of the cobalt-tungsten alloy nanowires can be reduced through annealing.
    Type: Grant
    Filed: September 28, 2023
    Date of Patent: January 21, 2025
    Assignee: Korea University Research and Business Foundation
    Inventors: Young Keun Kim, Eun Min Yoo, Jun Hwan Moon, Yoo Sang Jeon
  • Patent number: 12180505
    Abstract: Disclosed are a nanobarcode for controlling adhesion and differentiation of stem cells and a method of controlling adhesion and differentiation of stem cells by using nanobarcodes. The method of controlling adhesion and differentiation of stem cells of the present invention may efficiently control adhesion and differentiation of stem cells in vivo or in vitro by tuning periodicity and sequences of a ligand peptide (RGD) of a nanobarcode.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: December 31, 2024
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Heemin Kang, Young Keun Kim, Sunhong Min, Yoo Sang Jeon, Hyojun Choi
  • Patent number: 12161762
    Abstract: The present invention relates to a nanohelix-substrate complex for controlling adhesion and polarization of macrophages, a manufacturing method thereof, and a method of controlling adhesion and polarization of macrophages by using the nanohelix-substrate complex, and the method of controlling adhesion and polarization of macrophages may temporally and reversibly control adhesion and phenotypic polarization of macrophages in vivo and ex vivo by controlling application/non-application of a magnetic field to the nanohelix-substrate complex.
    Type: Grant
    Filed: May 30, 2023
    Date of Patent: December 10, 2024
    Assignee: Korea University Research and Business Foundation
    Inventors: Young-Keun Kim, Heemin Kang, Min-Jun Ko, Gunhyu Bae
  • Patent number: 12161051
    Abstract: Disclosed are a spin-orbit torque (SOT)-based magnetic tunnel junction and a method of fabricating the same. More particularly, the SOT-based magnetic tunnel junction includes a spin-orbit torque (SOT)-based magnetic tunnel junction, including: a spin-orbit active layer formed on the substrate; a free layer formed on the spin-orbit active layer; a tunnel barrier layer formed on the free layer; and a pinned layer formed on the tunnel barrier layer, wherein the spin-orbit active layer includes a W—X alloy (where W is tungsten and X includes at least one of group IV semiconductors and group III-V semiconductors).
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: December 3, 2024
    Assignee: Korea University Research and Business Foundation
    Inventors: Young Keun Kim, Taehyun Kim
  • Patent number: 12138352
    Abstract: The present invention relates to a nanohelix-substrate complex for controlling adhesion and polarization of macrophages, a manufacturing method thereof, and a method of controlling adhesion and polarization of macrophages by using the nanohelix-substrate complex, and the method of controlling adhesion and polarization of macrophages may temporally and reversibly control adhesion and phenotypic polarization of macrophages in vivo and ex vivo by controlling application/non-application of a magnetic field to the nanohelix-substrate complex.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: November 12, 2024
    Assignee: Korea University Research and Business Foundation
    Inventors: Young-Keun Kim, Heemin Kang, Min-Jun Ko, Gunhyu Bae
  • Publication number: 20240345478
    Abstract: Disclosed are a semiconductor photoresist composition including an organotin compound represented by Chemical Formula 1, and a solvent, a method of forming patterns using the same.
    Type: Application
    Filed: February 26, 2024
    Publication date: October 17, 2024
    Inventors: Soobin LIM, Young Keun KIM, Eunmi KANG, Seol Hee LIM
  • Publication number: 20240345477
    Abstract: Disclosed are a semiconductor photoresist composition including an organometallic compound represented by Chemical Formula 1, and a solvent, a method of forming patterns using the same.
    Type: Application
    Filed: February 26, 2024
    Publication date: October 17, 2024
    Inventors: Dong Wan RYU, Young Keun KIM, Seol Hee LIM, Soobin LIM, Sukil KANG
  • Patent number: 12089387
    Abstract: A device and method for absorbing electromagnetic waves can include a honeycomb sheet formed by a plurality of interconnected hexagon cells arranged in rows. The hexagon cells are made up of sidewalls, each sidewall formed by two surfaces that converge at a top of the sidewall and diverge from the top to a bottom of the sidewall such that a thickness of the sidewalls increases from top to bottom and an angle forms between the two surfaces at the top of the sidewall. In an example, the angle is about 8 degrees. The honeycomb sheet can be coated with a magnetic, composite coating to increase electromagnetic shielding. An example coating includes magnetic multi-granular nanoclusters (MGNC) and multi-walled carbon nanotubes (MWCNT). A base layer can be attached to the honeycomb sheet for mechanical stability and additional absorption. The device is suitable for radar absorbing materials (RAM) for aerospace and military applications.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: September 10, 2024
    Assignees: Khalifa University of Science and Technology, Korea University Research and Business Foundation
    Inventors: Daniel Choi, Hammad Younes, Ru Li, Young Keun Kim
  • Publication number: 20240258524
    Abstract: The present disclosure relates to an anode active material for a sodium secondary battery, which has a layered crystal structure and is formed of nanoplatelets containing iron oxide having organic anions, and in which the nanoplatelets are provided in plural numbers and formed in a stacking structure spaced apart at a first interval.
    Type: Application
    Filed: January 9, 2024
    Publication date: August 1, 2024
    Applicants: Korea University Research and Business Foundation, KOREA BASIC SCIENCE INSTITUTE
    Inventors: Young-Keun KIM, Yong-Mook KANG, Ji-Ung CHO, Bum-Chul PARK, Dae-Bum LEE
  • Publication number: 20240254636
    Abstract: Disclosed herein is a technique for synthesizing chiral magnetic nanocoils using an electrodeposition technique, which can be used to fabricate magnetic nanosensors capable of generating an electric field by strongly reacting to an external magnetic field, such as Faraday's law of electromagnetic induction at the nanoscale, depending on the coil shape of the nanostructure. In accordance with one embodiment, a method of synthesizing a chiral magnetic nanocoil may include generating a primary particle composed of metal ions by applying an external electric field, binding a chiral molecule to a surface of the generated primary particle, and controlling an assembly direction of a next primary particle by the bound chiral molecule.
    Type: Application
    Filed: December 20, 2023
    Publication date: August 1, 2024
    Applicants: Korea University Research and Business Foundation, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul National University R&DB Foundation
    Inventors: Young Keun KIM, Yoo Sang JEON, Eunjin JEONG, Sung Jong YOO, Ki Tae NAM, Sang Won IM
  • Publication number: 20240247408
    Abstract: The present invention relates to a fiber-nanowire composite-based sheet having super-amphiphilic characteristics. In the present invention, fibers including metal nanoparticles or metal oxide nanoparticles embedded in the fibers or located on the surface of the fibers are synthesized, and a sheet based on a composite in which metal nanowires or metal oxide nanowires have been grown from the above fibers is provided. A sheet of the present invention has super-amphiphilic characteristics and can be used in various fields such as the antibacterial filter field, the antibacterial film field, the antiviral filter field, the antiviral film field, the antifouling coating field, the drug delivery vehicle field, or the water treatment filter field.
    Type: Application
    Filed: April 3, 2024
    Publication date: July 25, 2024
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Young Keun KIM, Jung Bae KIM, Sang Won BYUN, Bum Chul PARK, Young Jun Ju
  • Publication number: 20240241437
    Abstract: A semiconductor photoresist composition and a method of forming patterns using the semiconductor photoresist composition are disclosed. The semiconductor photoresist composition may include an organotin compound represented by Chemical Formula 1 and a solvent.
    Type: Application
    Filed: September 22, 2023
    Publication date: July 18, 2024
    Inventors: Seol Hee LIM, Changsoo WOO, Young Keun KIM, Dong Wan RYU, Soobin LIM, Sukil KANG, Eunmi KANG
  • Patent number: 12030363
    Abstract: Disclosed is a vehicle air conditioner capable of increasing the aft flow effective region of an inner flow path by reducing the space occupied by support parts of doors for opening/closing a plurality of regions. The vehicle air conditioner comprises: an air-conditioning case in which an air flow path is formed; and a cooling heat exchanger and a heating heat exchanger provided in the air flow path of the air-conditioning case, wherein the air flow path is partitioned and divided into a plurality of regions, and has a plurality of doors for opening/closing each region and a shaft for driving the doors, and the distance between one door and the shaft is different from the distance between another door and the shaft.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: July 9, 2024
    Assignee: Hanon Systems
    Inventors: Chan Joo Maeng, Young Keun Kim, Ki Man Jeon, Hyun Kwon Jung, Gyu Ik Han
  • Patent number: 11993866
    Abstract: The present invention relates to a fiber-nanowire composite-based sheet having super-amphiphilic characteristics. In the present invention, fibers including metal nanoparticles or metal oxide nanoparticles embedded in the fibers or located on the surface of the fibers are synthesized, and a sheet based on a composite in which metal nanowires or metal oxide nanowires have been grown from the above fibers is provided. A sheet of the present invention has super-amphiphilic characteristics and can be used in various fields such as the antibacterial filter field, the antibacterial film field, the antiviral filter field, the antiviral film field, the antifouling coating field, the drug delivery vehicle field, or the water treatment filter field.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: May 28, 2024
    Assignee: Korea University Research and Business Foundation
    Inventors: Young Keun Kim, Jung Bae Kim, Sang Won Byun, Bum Chul Park, Young Jun Ju
  • Patent number: 11981751
    Abstract: Disclosed are a nanobarcode for controlling adhesion and polarization of macrophages and a method of controlling adhesion and polarization of macrophages by using nanobarcodes. The method of controlling adhesion and polarization of macrophages of the present invention may efficiently control adhesion and phenotypic polarization of macrophages in vivo or in vitro by tuning periodicity and sequences of ligand peptide (RGD) of a nanobarcode.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: May 14, 2024
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Heemin Kang, Young Keun Kim, Sunhong Min, Yoo Sang Jeon, Hyojun Choi
  • Publication number: 20240134273
    Abstract: Provided are a semiconductor photoresist composition including an organotin compound represented by Chemical Formula 1 and a solvent, and a method of forming patterns using the same. The method of forming patterns may include forming an etching-objective layer on a substrate, coating the semiconductor photoresist composition on the etching-objective layer to form a photoresist layer, patterning the photoresist layer to form a photoresist pattern, and etching the etching-objective layer using the photoresist pattern as an etching mask.
    Type: Application
    Filed: August 25, 2023
    Publication date: April 25, 2024
    Inventors: Kyungsoo MOON, Young Keun KIM, Dong Wan RYU
  • Patent number: 11912102
    Abstract: An air conditioner for a vehicle including an air-conditioning case divided into a plurality of air passageways by a separation wall. A heating heat exchanger is disposed inside the air-conditioning case and exchanges heat with air to heat the interior of the vehicle. A perforated member is disposed at a downstream side of the heating heat exchanger and has a plurality of perforated holes through which the air passing the heating heat exchanger passes, and a partition wall is disposed between the heating heat exchanger and the perforated member to divide the air passageway of the air-conditioning case into a plurality of air passageways, wherein the partition wall is formed integrally with the perforated member.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: February 27, 2024
    Assignee: HANON SYSTEMS
    Inventors: Dong Won Lee, Jong Su Kim, Jae Woo Ko, Young Keun Kim, Chang Soo Bae, Jong Min Lee, Gyu Ik Han