Patents Assigned to Korea Institute of Science and Technology
  • Patent number: 11127967
    Abstract: Disclosed is a high temperature-type unitized regenerative fuel cell using water vapor, which exhibits high hydrogen (H2) production efficiency and superior power generation ability.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 21, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Seo Park, Ahyoun Lim, Ju Sung Lee, Hee-Young Park, So Young Lee, Jin Young Kim, Sung Jong Yoo, Dirk Henkensmeier, Jong Hyun Jang, Hyoung-Juhn Kim
  • Patent number: 11109959
    Abstract: There is provided an intraocular lens including an optic portion having a circular shape from one side thereof and including a first pattern which includes a ridge and a groove, and a plurality of haptic portions extending from an outer circumferential edge of the optic portion and each including a second pattern which includes a ridge and a groove, in which at least one of the ridges included in the first pattern and the second pattern and at least one of the grooves included in the first pattern and the second pattern includes a section in which a width is formed differently.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: September 7, 2021
    Assignees: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Ho Jeong Jeon, Myoung Ryul Ok, Yu Chan Kim, Hyun Kwang Seok, Choun Ki Joo, Byoung Chan Choi
  • Patent number: 11114619
    Abstract: A conjugated polymer that is an electron donor, that is soluble without aggregation, that is solution-coatable and is dryable at a temperature below 70° C., that has an energy conversion efficiency of 7 % or more over an area of 5 cm2 or more, and that is composed of a repeating unit represented by Chemical Formula 1A below: where x is a real number from 0.1 to 0.2; and n is an integer from 1 to 1,000. The conjugated polymer forms a uniform thin film over a large area of, for example, an organic solar cell, without a heat treatment due to superior solubility and crystallinity at low temperature and, thus, allows fabrication of an organic solar cell with high efficiency at a low temperature.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: September 7, 2021
    Assignee: Korea Institute of Science and Technology
    Inventors: Hae Jung Son, Sungmin Park, Jong Baek Park, Sohyun Park
  • Patent number: 11110496
    Abstract: Provided are a method of producing a nano composite structure and a nano composite structure produced by using the same. The method comprises producing a substrate; placing a metal net structure above the substrate; and plasma treating the substrate above which the metal net structure is placed. The nano composite structure includes a substrate having a plurality of first protrusions constituting a nano pattern on its surface; and an inorganic particle disposed on an end of at least a portion of the first protrusions.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: September 7, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Myoung Woon Moon, Tae Jun Ko, Kyu Hwan Oh
  • Patent number: 11113160
    Abstract: Disclosed are an apparatus for performing data migration and a method of operating the same for processing data migration between memories according to a monitoring result of a change in performance while applications are executed in a High Performance Computing (HPC) environment adapting hybrid memories.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: September 7, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE & TECHNOLOGY INFORMATION
    Inventors: Geunchul Park, Jieun Choi, Chan-Yeol Park, Seungwoo Rho, Jong Min Lee, Kwangho Lee
  • Patent number: 11111565
    Abstract: Disclosed is an entropy-controlled solid solution matrix BCC alloy having strong resistance to high-temperature neutron radiation damage. The entropy-controlled solid solution matrix BCC alloy includes three or more multicomponent main elements selected from the element group consisting of Zr, Al, Nb, Mo, Cr, V, and Ti selected based on a neutron absorption cross-sectional area and a mixing enthalpy. Each of the elements is included in an amount of 5 to 35 at %, and the entropy-controlled solid solution matrix BCC alloy is a BCC-structure solid solution matrix alloy in a medium-entropy to high-entropy state. In this invention, damage caused by neutron radiation is reduced, and entropy is controlled to thus ensure a solid solution matrix BCC structure having a slow diffusion speed, and accordingly, resistance to void swelling due to radioactive rays is high.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: September 7, 2021
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Eun Soo Park, Hyun Seok Oh, Il Hwan Kim, Hye Jung Chang, Sangjun Kim, Chae Woo Ryu
  • Patent number: 11113611
    Abstract: A method of predicting an electronic structure of a material by an electronic apparatus includes receiving user's input data about elements constituting the material; applying the received user's input data to a trained model for estimating a state density of the material; and outputting a first graph representing energy level-by-level state densities of the material output from the trained model, wherein the trained model is trained to generate the first graph based on a plurality of second graphs representing pre-calculated energy level-by-level state densities respectively corresponding to a plurality of pre-input data about elements of various materials and the plurality of pre-input data.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: September 7, 2021
    Assignee: Korea Institute of Science and Technology
    Inventors: Sang Soo Han, Byung Chul Yeo, Chansoo Kim, Donghun Kim
  • Publication number: 20210269364
    Abstract: The present disclosure provides a boron carbide composite material having a novel composition with excellent mechanical properties, and a production method therefor. The boron carbide composite material has high fracture toughness and may be applied as a lightweight bulletproof ceramic material. The boron carbide composite material is a boron carbide/silicon carbide/titanium boride/graphite (B4C—SiC—TiB2—C) composite material. The composite material may overcome a technical limitation on increasing the fracture toughness of the boron carbide composite material, and may be produced as a high-density boron carbide composite material using a reactive hot-pressing sintering process at a relatively low temperature.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 2, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Whan PARK, Mi Rae YOUM, SUNG IL YUN, Jun Hyung PARK
  • Publication number: 20210269602
    Abstract: Provided are a method for producing a stereocomplex polylactic acid composite based on oil-in-water emulsion blending, a method for preparing a drug delivery composition using a stereocomplex polylactic acid composite produced by the production method, and a drug delivery composition prepared by the preparation method. The stereocomplex polylactic acid composite is produced using oil-in-water emulsion blending that has the advantages of simple process, short production time, and high stereocomplexation efficiency compared to existing methods such as solution blending, melt-blending, and supercritical fluid technology. In addition, the drug delivery composition is prepared using oil-in-water emulsion blending that allows the drug to be loaded into the polymer chains of the stereocomplex polylactic acid in a very easy and efficient manner and facilitates release of the drug at room temperature over a long period of time.
    Type: Application
    Filed: November 12, 2020
    Publication date: September 2, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Soo Hyun KIM, Youngmee JUNG, Justin Jihong CHUNG, Seung Hyuk IM
  • Publication number: 20210273240
    Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.
    Type: Application
    Filed: July 21, 2020
    Publication date: September 2, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun JANG, Hyun Seo PARK, Hee-Young PARK, Katie Heeyum LIM, Oh Sub KIM, Hyoung-Juhn KIM, Jin Young KIM, Sung Jong YOO, Dirk HENKENSMEIR, So Young LEE
  • Publication number: 20210269664
    Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers.
    Type: Application
    Filed: February 11, 2021
    Publication date: September 2, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong Min KOO, In Sik IN, Tae Yun KO, Daesin KIM, Se Hyun DOO, Seon Joon KIM, Soon Man HONG, Seung Sang HWANG, Kyung Youl BAEK, Albert LEE, Sangho CHO
  • Patent number: 11107894
    Abstract: Provided is a Group III-V compound semiconductor device. The device includes a substrate, a compound semiconductor layer provided on the substrate; and a buffer layer interposed between the compound semiconductor layer and the substrate. The compound semiconductor layer includes a first semiconductor area having a first conductivity type and a second semiconductor area having a second conductivity type. The buffer layer includes a high electron density area. In the buffer layer, an electron density of the high electron density area is higher than an electron density outside the high electron density area.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: August 31, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyunsu Ju, Jin-Dong Song, Joonyeon Chang, Gyosub Lee
  • Patent number: 11105659
    Abstract: Embodiments relate to a dual Brillouin distributed optical fiber sensing system and a sensing method using Brillouin scattering that detects an event area in which an event occurred quickly by simultaneously measuring multiple correlation points located in an optical fiber under test by using a pump signal modulated with a pulsed gating signal and a continuous wave probe signal, and then precisely measures the corresponding event area by using the probe signal modulated with the pulsed gating signal and the pump signal.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: August 31, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kwan Il Lee, Gukbeen Ryu, Sang Bae Lee, In Soo Kim, Wonsuk Lee
  • Publication number: 20210261415
    Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.
    Type: Application
    Filed: February 18, 2021
    Publication date: August 26, 2021
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, DREXEL UNIVERSITY
    Inventors: Yury GOGOTSI, Kanit HANTANASIRISAKUL, Chong Min KOO, Aamir IQBAL, Soon Man HONG, Seon Joon KIM, Seung Sang HWANG, Kyung Youl BAEK, Albert LEE, Sangho CHO
  • Publication number: 20210266861
    Abstract: Provided is a node location tracking method, including an initial localization step of estimating initial locations of a robot and neighboring nodes using inter-node measurement and a Sum of Gaussian (SoG) filter, wherein the initial localization step includes an iterative multilateration step of initializing the locations of the nodes; and a SoG filter generation step of generating the SoG filter.
    Type: Application
    Filed: August 28, 2020
    Publication date: August 26, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Doik KIM, Jung Hee KIM
  • Patent number: 11097943
    Abstract: A membrane device includes a trench substrate having trenches and a membrane having wrinkles. The membrane is not bonded to the trenches of the trench substrate but is bonded to the surface of the trench substrate in the shoulders of the trenches. Hills and valleys are alternately arranged in the membrane along the trenches. The membrane device can be used in various applications (for example, sensors) based on variations in the electrical properties of the membrane caused by a change in the shape of the wrinkles (a change in the strain) of the membrane in response to a change in the internal or external environment of the trenches.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: August 24, 2021
    Assignee: Korea Institute of Science and Technology
    Inventors: Byung Chui Lee, Jin Soo Park, Mintack Oh, Jin Hyun Kim
  • Publication number: 20210253445
    Abstract: Provided is a method of preparing palladium hydride nanoparticles having a hcp crystal structure. According to an embodiment of the present invention, the method includes: (a) preparing a liquid cell containing a palladium precursor solution; (b) applying electron beams to the palladium precursor solution contained in the liquid cell; and (c) generating palladium hydride nanoparticles having the hcp crystal structure in the palladium precursor solution.
    Type: Application
    Filed: September 29, 2020
    Publication date: August 19, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Won CHUN, Sung Jong YOO, Jaeyoung HONG, Hee-Young PARK, Young-Su LEE, Jin-Yoo SUH, Jee-Hwan BAE, Min Kyung CHO
  • Patent number: 11090634
    Abstract: Disclosed is a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst using a stabilizer. According to the method, the transition metal on the nanoparticle surface and the stabilizer are simultaneously removed by treatment with acetic acid. Therefore, the method enables the preparation of a carbon-supported platinum-transition metal alloy nanoparticle catalyst in a simple and environmentally friendly manner compared to conventional methods. The carbon-supported platinum-transition metal alloy nanoparticle catalyst can be applied as a high-performance, highly durable fuel cell catalyst.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: August 17, 2021
    Assignees: Korea Institute of Science and Technology, Global Frontier Center for Multiscale Energy Systems
    Inventors: Sung Jong Yoo, Sehyun Lee, Hee-Young Park, Jong Hyun Jang, Jin Young Kim, Hyoung-Juhn Kim, Jea-woo Jung
  • Publication number: 20210245283
    Abstract: A method of joining a high entropy alloy is provided. The method of joining a high entropy alloy includes the steps of: arranging specimens made of a high entropy alloy to be in contact with each other; and diffusion joining the specimens made of the high entropy alloy by simultaneously applying a compressive stress and a current to a joint of the specimens within a range in which the high entropy alloy does not melt.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 12, 2021
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, University of Ulsan Foundation For Industry Cooperation, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Heung Nam HAN, Min Gu JO, Sung Tae HONG, Nguyen Thi Anh Nguyet, Jin-Yoo SUH
  • Publication number: 20210244847
    Abstract: The present disclosure relates to a microgel composition comprising collagen and hyaluronic acid and a method of preparing the same. The microgel according to an embodiment is composed of natural biocompatible substances and is non-toxic and has high mechanical stability or long persistence, and thus can be effectively used in a microgel composition, a three-dimensional scaffold composition, and a tissue-engineering scaffold.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 12, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang-Heon KIM, Seung Ja OH, Ha Eun CHUNG