Patents by Inventor Hee-young Park

Hee-young Park 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: 20200283307
    Abstract: Disclosed are a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst. The perovskite compound overcomes the low stability of palladium due to its perovskite structural properties. Therefore, the perovskite compound can be used as a catalyst material for a fuel cell. In addition, the use of palladium in the catalyst instead of expensive platinum leads to an improvement in the price competitiveness of fuel cells. The catalyst is highly durable and catalytically active due to its perovskite structure.
    Type: Application
    Filed: August 7, 2019
    Publication date: September 10, 2020
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
    Inventors: Sung Jong YOO, Sehyun Lee, Hee-Young Park, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim, Pil Kim, Jae Young Jung, Yeonsun Sohn
  • Publication number: 20200230589
    Abstract: Disclosed are a metal single-atom catalyst and a method for preparing the same. The method uses a minimal amount of chemicals and is thus environmentally friendly compared to conventional chemical and/or physical methods. In addition, the method enables the preparation of a single-atom catalyst in a simple and economical manner without the need for further treatment such as acid treatment or heat treatment. Furthermore, the method is universally applicable to the preparation of single-atom catalysts irrespective of the kinds of metals and supports, unlike conventional methods that suffer from very limited choices of metal materials and supports. Therefore, the method can be widely utilized to prepare various types of metal single-atom catalysts. All metal atoms in the metal single-atom catalyst can participate in catalytic reactions. This optimal atom utilization achieves maximum reactivity per unit mass and can minimize the amount of the metal used, which is very economical.
    Type: Application
    Filed: August 7, 2019
    Publication date: July 23, 2020
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS
    Inventors: Sung Jong YOO, Injoon JANG, Hee-Young PARK, So Young LEE, Hyun Seo PARK, Jin Young KIM, Jong Hyun JANG, Hyoung-Juhn KIM
  • Publication number: 20200152996
    Abstract: Disclosed is a method for producing an electrode for a high temperature polymer electrolyte membrane fuel cell. According to the method, a catalyst slurry containing a uniformly dispersed binder is used to produce an electrode. Also disclosed are a membrane electrode assembly using the electrode and a high temperature polymer electrolyte membrane fuel cell including the membrane electrode assembly. Uniform distribution of the binder leads to improvements in the performance and reproducibility of the fuel cell.
    Type: Application
    Filed: April 17, 2019
    Publication date: May 14, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyoung-Juhn KIM, Min Jae LEE, Ju Sung LEE, Katie Heeyum LIM, So Young LEE, Hee-Young PARK, Hyun Seo PARK, Jin Young KIM, Sung Jong YOO, Jong Hyun JANG
  • Publication number: 20200131657
    Abstract: The present disclosure relates to an oxygen electrode comprising a dual plating catalyst, a water electrolysis device and a regenerative fuel cell comprising the same, and a method for preparing the oxygen electrode.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 30, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Seo PARK, Jong Hyun JANG, Hee-Young PARK, Jin Young KIM, So Young LEE, Sung Jong YOO, Dirk Henkensmeier, Hyoung-Juhn KIM, Ahyoun LIM, Junyoung KIM, Hye Jin LEE
  • Patent number: 10601052
    Abstract: Disclosed are a reversible fuel cell oxygen electrode in which IrO2 is electrodeposited and formed on a porous carbon material and platinum is applied thereon to form a porous platinum layer, a reversible fuel cell including the same, and a method for preparing the same. According to the corresponding reversible fuel cell oxygen electrode, as the loading amounts of IrO2 and platinum used in the reversible fuel cell oxygen electrode can be lowered, it is possible to exhibit excellent reversible fuel cell performances (excellent fuel cell performance and water electrolysis performance) by improving the mass transport of water and oxygen while being capable of reducing the loading amounts of IrO2 and platinum. Further, it is possible to exhibit a good activity of a catalyst when the present disclosure is applied to a reversible fuel cell oxygen electrode and to reduce corrosion of carbon.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: March 24, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Jong Hyun Jang, Byungseok Lee, Hee-Young Park, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, So Young Lee, Jaeyune Ryu, Sung Pil Yoon, Jonghee Han, Suk Woo Nam
  • Publication number: 20200075730
    Abstract: A semiconductor device includes a trench defining an active region in a substrate, a first insulating layer on a bottom surface and side surfaces of the active region inside the trench, a shielding layer on a surface of the first insulating layer, the shielding layer including a plurality of spaced apart particles, a second insulating layer on the shielding layer and having first charge trapped therein, the plurality of spaced apart particles being configured to concentrate second charge having an opposite polarity to the charge trapped in the second insulating layer, and a gap-fill insulating layer on the second insulating layer in the trench.
    Type: Application
    Filed: March 14, 2019
    Publication date: March 5, 2020
    Inventors: Dong Kak Lee, Min Woo KIM, Bong Hyun KIM, Hee Young PARK, Seo Jin AHN, Won Yong LEE
  • Publication number: 20200061584
    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: Application
    Filed: February 6, 2019
    Publication date: February 27, 2020
    Applicants: 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: 20190341624
    Abstract: The present disclosure relates to a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst. More particularly, the present disclosure provides a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst using a stabilizer, the method including the steps of: (a) mixing a platinum precursor, a transition metal precursor, carbon, stabilizer and a reducing agent solution, and carrying out washing and drying to obtain carbon-supported platinum-transition metal alloy nanoparticles; (b) mixing the carbon-supported platinum-transition metal alloy nanoparticles with an acetic acid solution, and carrying out washing and drying to obtain acetic acid-treated nanoparticles; and (c) heat treating the acetic acid-treated nanoparticles.
    Type: Application
    Filed: February 6, 2019
    Publication date: November 7, 2019
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun JANG, Hee-Young PARK, Jea-woo JUNG, Hyoung-Juhn KIM, Dirk HENKENSMEIER, Sung Jong YOO, Jin Young KIM, So Young LEE, Hyun Seo PARK
  • Publication number: 20190074523
    Abstract: An aryne-grafted carbon-supported catalyst and a method of preparing the same, and particularly to a carbon-supported catalyst having an organic anchor formed on the surface of a carbon support through aryne cycloaddition in order to improve the durability of a fuel cell catalyst, and a method of preparing the same. It is possible to form a covalent bonding selectively to a carbon support of a fuel cell catalyst in a solution by using 2-(trimethylsilyl)phenyl triflate or the like. In addition, the formed anchor prevents adhesion of metal catalyst particles of a fuel cell, and thus improves the durability of a fuel cell catalyst.
    Type: Application
    Filed: January 24, 2018
    Publication date: March 7, 2019
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun Jang, Hee-Young Park, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Jong Yoo, Jin Young Kim, So Young Lee, Hyun Seo Park
  • Patent number: 9953928
    Abstract: Semiconductor devices including empty spaces and methods of forming the semiconductor devices are provided. The semiconductor devices may include first and second line structures extending in a direction on a substrate, an insulating isolation pattern between the first and second line structures and a conductive structure between the first and second line structures and next to the insulating isolation pattern along the direction. The semiconductor devices may also include an empty space including a first portion between the first line structure and the conductive structure and a second portion between the first line structure and the insulating isolation pattern. The first portion of the empty space may have a height different from a height of the second portion of the empty space.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 24, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Rae Kim, Byoung-Deog Choi, Hee-Young Park, Sang-Ho Roh, Jin-Hyung Park, Kyung-Mun Byun
  • Patent number: 9799904
    Abstract: A polymer electrolyte membrane fuel cell is provided. The polymer electrolyte membrane fuel cell includes a phosphoric acid-doped polyimidazole electrolyte membrane and a complex catalyst. In the complex catalyst, an alloy or mixture of a metal and a chalcogen element is supported on a carbon carrier. The polymer electrolyte membrane fuel cell exhibits further improved long-term operation, power generation efficiency, and operational stability at high temperature. The complex catalyst can be produced by a simple method.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: October 24, 2017
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun Jang, Hee-young Park, Hyoung-Juhn Kim, Dirk Henkensmeier, Sung Pil Yoon, Suk Woo Nam, Hyung Chul Ham, Tae-Hoon Lim, Jonghee Han, Sung Jong Yoo, Eun Ae Cho
  • Patent number: 9793552
    Abstract: The present disclosure relates to a PtAu nanoparticle catalyst heat-treated in the presence of carbon monoxide (CO) and a method for preparing same. Since the PtxAuy nanoparticle catalyst heat-treated under CO atmosphere has high Pt surface area and superior oxygen reduction reaction (ORR) activity, a high-efficiency, high-quality fuel cell can be achieved by applying the catalyst to a fuel cell.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 17, 2017
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun Jang, Yung-Eun Sung, Hee-young Park, Hyoung-Juhn Kim, Dirk Henkensmeier, Suk Woo Nam, Hyung Chul Ham, Tae-Hoon Lim, Sung Jong Yoo, Eun Ae Cho, Kug-Seung Lee
  • Publication number: 20170187042
    Abstract: Disclosed are a reversible fuel cell oxygen electrode in which IrO2 is electrodeposited and formed on a porous carbon material and platinum is applied thereon to form a porous platinum layer, a reversible fuel cell including the same, and a method for preparing the same. According to the corresponding reversible fuel cell oxygen electrode, as the loading amounts of IrO2 and platinum used in the reversible fuel cell oxygen electrode can be lowered, it is possible to exhibit excellent reversible fuel cell performances (excellent fuel cell performance and water electrolysis performance) by improving the mass transport of water and oxygen while being capable of reducing the loading amounts of IrO2 and platinum. Further, it is possible to exhibit a good activity of a catalyst when the present disclosure is applied to a reversible fuel cell oxygen electrode and to reduce corrosion of carbon.
    Type: Application
    Filed: November 23, 2016
    Publication date: June 29, 2017
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun JANG, Byungseok LEE, Hee-Young PARK, Hyoung-Juhn KIM, Dirk HENKENSMEIER, Sung Jong YOO, Jin Young KIM, So Young LEE, Jaeyune RYU, Sung Pil YOON, Jonghee HAN, Suk Woo NAM
  • Publication number: 20160300795
    Abstract: Semiconductor devices including empty spaces and methods of forming the semiconductor devices are provided. The semiconductor devices may include first and second line structures extending in a direction on a substrate, an insulating isolation pattern between the first and second line structures and a conductive structure between the first and second line structures and next to the insulating isolation pattern along the direction. The semiconductor devices may also include an empty space including a first portion between the first line structure and the conductive structure and a second portion between the first line structure and the insulating isolation pattern. The first portion of the empty space may have a height different from a height of the second portion of the empty space.
    Type: Application
    Filed: June 17, 2016
    Publication date: October 13, 2016
    Inventors: Hong-Rae Kim, BYOUNG-DEOG CHOI, HEE-YOUNG PARK, SANG-HO ROH, JIN-HYUNG PARK, KYUNG-MUN BYUN
  • Patent number: 9413014
    Abstract: The present disclosure relates to a method and an apparatus for preparing nanosized metal or alloy nanoparticles by depositing metal or alloy nanoparticles with superior size uniformity on the surface of a powder as a base material by vacuum deposition and then dissolving or melting the base material using a solvent or heat. The method solves the problems of the existing expensive multi-step synthesis method based on chemical reduction and allows effective synthesis of metal or alloy nanoparticles with very uniform size and metal or alloy catalyst nanoparticles supported on carbon at low cost.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: August 9, 2016
    Assignees: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GL MATERIALS INC.
    Inventors: Sung Jong Yoo, Hee-young Park, Jong Hyun Jang, Hyoung-Juhn Kim, Tae-Hoon Lim, Sang Young Lee, Sang Hyun Ahn, Namgee Jung, Suk Woo Nam, Eun Ae Cho, Seok Keun Koh
  • Patent number: 9391138
    Abstract: Semiconductor devices including empty spaces and methods of forming the semiconductor devices are provided. The semiconductor devices may include first and second line structures extending in a direction on a substrate, an insulating isolation pattern between the first and second line structures and a conductive structure between the first and second line structures and next to the insulating isolation pattern along the direction. The semiconductor devices may also include an empty space including a first portion between the first line structure and the conductive structure and a second portion between the first line structure and the insulating isolation pattern. The first portion of the empty space may have a height different from a height of the second portion of the empty space.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: July 12, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Rae Kim, Byoung-Deog Choi, Hee-Young Park, Sang-Ho Roh, Jin-Hyung Park, Kyung-Mun Byun
  • Publication number: 20150196897
    Abstract: The present disclosure relates to a PtAu nanoparticle catalyst heat-treated in the presence of carbon monoxide (CO) and a method for preparing same. Since the PtxAuy nanoparticle catalyst heat-treated under CO atmosphere has high Pt surface area and superior oxygen reduction reaction (ORR) activity, a high-efficiency, high-quality fuel cell can be achieved by applying the catalyst to a fuel cell.
    Type: Application
    Filed: February 28, 2014
    Publication date: July 16, 2015
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Hyun JANG, Yung-Eun SUNG, Hee-young PARK, Hyoung-Juhn KIM, Dirk HENKENSMEIER, Suk Woo NAM, Hyung Chul HAM, Tae-Hoon LIM, Sung Jong YOO, Eun Ae CHO, Kug-Seung LEE
  • Patent number: 9071411
    Abstract: A control channel element detection method and apparatus is provided for detecting the Control Channel Elements (CCEs) carrying control information for a mobile station using a Channel Quality Indicator (CQI). A CCE detection method includes searching a current subframe for CCEs, and locating the CCEs carrying control information for the mobile station by decoding the current subframe with variable code rates. Searching for the CCEs includes searching the current subframe for the CCEs carrying the control information for the mobile station while changing a size type of the CCEs according to a result of a comparison between a CQI of the current subframe and a CQI of a previous subframe.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: June 30, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hee Young Park, Seong Wook Song, Hun Kee Kim
  • Patent number: 8990652
    Abstract: A method and apparatus for controlling iterative decoding in a turbo decoder are provided, in which a maximum number of iterations is determined for current data to be decoded based on at least one of current HARQ information necessary for a HARQ operation of the current data, previous HARQ information about previous data, and early stop information indicating whether iterative decoding of the previous data was early stopped. A turbo decoder iteratively decodes the current data within the maximum number of iterations.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Young Park, Hun-Kee Kim
  • Publication number: 20140367825
    Abstract: Semiconductor devices including empty spaces and methods of forming the semiconductor devices are provided. The semiconductor devices may include first and second line structures extending in a direction on a substrate, an insulating isolation pattern between the first and second line structures and a conductive structure between the first and second line structures and next to the insulating isolation pattern along the direction. The semiconductor devices may also include an empty space including a first portion between the first line structure and the conductive structure and a second portion between the first line structure and the insulating isolation pattern. The first portion of the empty space may have a height different from a height of the second portion of the empty space.
    Type: Application
    Filed: May 9, 2014
    Publication date: December 18, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hong-Rae KIM, Byoung-Deog CHOI, Hee-Young PARK, Sang-Ho ROH, Jin-Hyung PARK, Kyung-Mun BYUN