Patents by Inventor Hee-Yeon Kim

Hee-Yeon 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: 9296695
    Abstract: The invention is directed to bipyridine-based compound and organic light emitting diodes (OLED) including organic layers having the bipyridine-based compound. OLEDs including organic layers having the bipyridine-based compounds can have low driving voltages, high current densities, high efficiencies and long lifetimes.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Yeon Kim, Seung-Gak Yang, Jun-Han Shin, Jae-Yong Lee
  • Patent number: 9259702
    Abstract: A composite synthesis method and apparatus, a vaporizer for the composite synthesis apparatus, a vaporizer heater and a composite. In the composite synthesis apparatus using simultaneous vaporization, two or more vaporizers are heated by heaters such that samples vaporized by the vaporizers are supplied into a reactor to synthesize a composite. The apparatus and method may prepare multiple-metal or metal-carbon heterogeneous composites, and may be applied to various metal- and carbon-based adsorbents, absorbents, gas/liquid separation membranes and various catalyst processes. Further, the composite may be applied to various industrial fields through change in metal components or carbon structures.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: February 16, 2016
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hee-Yeon Kim, Seok-yong Hong
  • Patent number: 9259728
    Abstract: The present disclosure relates to a catalyst having metal catalyst nanoparticles supported on natural cellulose fibers and a method of preparing the same, whereby natural cellulose fibers are subjected to specific pretreatment to increase a surface area and form defects on the surface thereof and metal catalyst nanoparticles are then supported on the cellulose catalyst support in a highly dispersed state, thereby providing improved catalysis while allowing production of the catalyst at low cost. The catalyst may be utilized for various catalytic reactions.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: February 16, 2016
    Assignee: Korea Institute of Energy Research
    Inventors: Hee-Yeon Kim, Nam-Jo Jeong, Seong-Ok Han
  • Patent number: 9254483
    Abstract: The present disclosure relates to a catalyst having metal catalyst nanoparticles supported on natural cellulose fibers and a method of preparing the same, whereby natural cellulose fibers are subjected to specific pretreatment to increase a surface area and form defects on the surface thereof and metal catalyst nanoparticles are then supported on the cellulose catalyst support in a highly dispersed state, thereby providing improved catalysis while allowing production of the catalyst at low cost. The catalyst may be utilized for various catalytic reactions.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 9, 2016
    Assignee: Korea Institute of Energy Research
    Inventors: Hee Yeon Kim, Nam Jo Jeong, Seong Ok Han
  • Publication number: 20160001281
    Abstract: Disclosed are a large-scale composite synthesis system, a reactor therefor, and a synthesis method using the same, wherein two or more different samples are vaporized in respective vaporizers, and are then fed into a reactor that has a relatively large transverse cross-sectional diameter compared to the connector for transporting the samples in a gas phase and is maintained at a temperature lower than that of the connector, thus producing a powder composite, the composite being synthesized while being electrostatically attached to an adherend surface.
    Type: Application
    Filed: June 1, 2015
    Publication date: January 7, 2016
    Inventors: Hee-Yeon KIM, Guk-Hyeon KWON
  • Publication number: 20150343428
    Abstract: Disclosed are a metal-carbon hybrid composite having a nitrogen-doped carbon surface and a method of manufacturing the same. More particularly, the present invention relates to a method of manufacturing a metal-carbon hybrid composite, wherein the surface of carbon for the metal-carbon hybrid composite may be doped with nitrogen in a single step using a co-vaporization process, and to a metal-carbon hybrid composite having a nitrogen-doped carbon surface manufactured by the method.
    Type: Application
    Filed: June 1, 2015
    Publication date: December 3, 2015
    Inventors: Hee-Yeon KIM, Guk-Hyeon KWON
  • Patent number: 9175385
    Abstract: A method of preparing a metal-carbon composite of a core-shell structure through simultaneous vaporization, in which a metal particle constitutes a core and carbon constitutes a shell, with the metal-carbon composite prepared in the form of powder and supported on a supporter, and a metal-carbon composite of a core-shell structure prepared by the same. In these methods, the metal-carbon composite of the core-shell structure is prepared through simultaneous vaporization of metal and carbon precursors and does not require separate post-processing. Further, in the metal-carbon composite of the core-shell structure prepared by these methods, a carbon shell covers a portion or the entirety of a surface of a metal core, whereby the metal particles can be prevented from suffering agglomeration, separation or corrosion when subjected to harsh process conditions at high temperatures for long durations under strong acid and alkali conditions, thereby providing high performance and high durability.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: November 3, 2015
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hee-Yeon Kim, Seok-yong Hong
  • Patent number: 9172095
    Abstract: The present subject matter provides a method of manufacturing an electrode for a fuel cell, in which nanocarbons are grown on the surface of a substrate for a fuel cell using a process of simultaneously gasifying a platinum precursor and a carbon precursor, and simultaneously core-shell-structured platinum-carbon composite catalyst particles are highly dispersed between nanocarbons The subject matter also provides an electrode for a fuel cell, manufactured by the method. This method is advantageous in that an electrode for a fuel cell having remarkably improved electrochemical performance and durability can be manufactured by a simple process.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: October 27, 2015
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hee-Yeon Kim, Seok-yong Hong, Kwang-shik Myung
  • Patent number: 9114387
    Abstract: The present subject matter provides a method of preparing a multicomponent metal-hybrid nanocomposite using co-gasification, in which a multicomponent metal-hybrid nanocomposite can be prepared by a one-step process without using a complicated process including the steps of supporting-drying-calcining-annealing and the like at the time of preparing a conventional alloy catalyst, and provides a multicomponent metal-hybrid nanocomposite prepared by the method. The method is advantageous in that a multicomponent metal-hybrid nanocomposite can be synthesized by a simple process of simultaneously gasifying two kinds of metal precursors, and in that an additional post-treatment process is not required.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: August 25, 2015
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hee-Yeon Kim, Seok-yong Hong, Kwang-Sup Song, Hong-Soo Kim
  • Patent number: 9023752
    Abstract: A method of preparing a catalyst using an alkali metal or an alkaline earth metal in natural cellulose fibers as a co-catalyst and a dispersant. The catalyst is prepared using an alkali metal or an alkaline earth metal as a co-catalyst and a dispersant, thus increasing the dispersibility of catalytic components and enhancing the interactions between the catalyst and the support to thereby retard agglomeration and increase the durability of the catalyst.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 5, 2015
    Assignee: Korea Institute of Energy Research
    Inventors: Hee-Yeon Kim, Nam-Jo Jeong, Seong-Ok Han
  • Patent number: 9012042
    Abstract: A condensed-cyclic compound represented by Formula 1 below, an organic light-emitting device including the same, and a flat panel display apparatus including the organic light-emitting device: X1, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, Ar7, Ar8, Ar9, Ar10, Ar11, and Ar12 being described in the detailed description of the invention. The organic light-emitting device including an organic layer including the compound above has low driving voltage and high emission efficiency.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Yeon Kim, Seung-Gak Yang, Jeoung-In Yi, Jae-Yong Lee
  • Patent number: 9000420
    Abstract: A condensed-cyclic compound represented by Formula 1 below and an organic light emitting diode including the condensed-cyclic compound:
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Yeon Kim, Seung-Gak Yang, Kwan-Hee Lee
  • Patent number: 8999525
    Abstract: A condensed-cyclic compound is represented by Formula 1 below. An organic light-emitting device includes the condensed-cyclic compound. A flat panel display apparatus includes the organic light-emitting device. The organic light-emitting device includes an organic layer including the compound of Formula 1 and has low driving voltage, high emission efficiency, and a long lifetime.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Yong Lee, Seung-Gak Yang, Hee-Yeon Kim, Jeoung-In Yi
  • Patent number: 8987709
    Abstract: A polymer and an organic light-emitting device including the polymer. An example of the polymer is wherein in Formula 1, Ar1 is each independently represented by -(Q1)n-, and Q1 is selected from the group consisting of a substituted or unsubstituted C5-C30 arylene group, a substituted or unsubstituted C4-C30 heteroarylene group, a substituted or unsubstituted C2-C30 alkenylene group, and a group represented by —N(Z1)—, and n is an integer from 1 to 10, and n groups of Q1 in -(Q1)n- is identical to or different from each other, and X1 and X2 are each independently selected from the group consisting of —O—, —S—, —N(Z2)—, and —C(Z3)(Z4)—.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Yeon Kim, Seung-Gak Yang, Jae-Yong Lee, Jeoung-In Yi, Yoon-Hyun Kwak, Jong-Hyuk Lee
  • Patent number: 8969234
    Abstract: A method of preparing a fuel cell electrode catalyst by preparing a platinum-carbon core-shell composite, which has a platinum nanoparticle core and a graphene carbon shell, using a simultaneous evaporation process, a method for preparing a fuel cell electrode comprising the catalyst prepared thereby, and a fuel cell comprising the same. A fuel cell comprising an electrode catalyst consisting of the core-shell composite prepared by simultaneously evaporating the platinum precursor and the organic precursor can have high performance and high durability, because the platinum particles are not agglomerated or detached and corroded even under severe conditions, including high-temperature, long use term, acidic and alkaline conditions.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 3, 2015
    Assignee: Korea Institute of Energy Research
    Inventors: Hee-Yeon Kim, Seok-yong Hong
  • Publication number: 20150051108
    Abstract: The present invention relates to a method and a kit for monitoring an immune status after transplant. The kit for monitoring an immune status after transplant and the method for monitoring an immune status of an individual after transplant as provided in the present invention make it easy and accurate to determine an immune status in the individual after transplant and thus have an effect of reducing overuse of an immunosuppressive agent prescribed after transplant and also have an effect of conveniently managing an immune status of each patient.
    Type: Application
    Filed: November 7, 2014
    Publication date: February 19, 2015
    Inventors: Mi-La CHO, Chul-Woo YANG, Jong-Young CHOI, Joo-Yeon JHUN, Hee-Yeon KIM, Jae-Kyeong BYUN, Ye-Been YIM, Byung-Ha CHUNG, Kyoung-Woon KIM
  • Patent number: 8927120
    Abstract: A heterocyclic compound represented by Formula 1 or Formula 2 below, an organic light-emitting device including the heterocyclic compound, and a flat display device including the organic light-emitting device: wherein Ar1 to Ar16, and R1 to R4 are defined as in the specification.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: January 6, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeoung-In Yi, Seung-Gak Yang, Hee-Yeon Kim, Jae-Yong Lee
  • Patent number: 8900725
    Abstract: A dendrimer and an organic light-emitting device including an organic layer having the dendrimer.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon-Hyun Kwak, Jeoung-In Yi, Seung-Gak Yang, Hee-Yeon Kim, Jae-Yong Lee
  • Publication number: 20140329671
    Abstract: Disclosed herein is a method of preparing an alloy catalyst for fuel cells, which is suitable for mass production and can reduce manufacturing costs. The method includes vaporizing at least two catalyst precursors in separate vaporizers; supplying the at least two vaporized catalyst precursors to a reactor while preventing contact therebetween; and synthesizing an alloy catalyst in the reactor. The method can prepare an alloy catalyst through a one-step process unlike typical multi-step methods for preparing catalysts, and can prepare an alloy catalyst at a much lower temperature than the typical methods for preparing alloys, thereby enabling mass production and cost reduction.
    Type: Application
    Filed: April 28, 2014
    Publication date: November 6, 2014
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hee-yeon Kim, Seok-yong Hong
  • Patent number: 8865322
    Abstract: A dendrimer and an organic light-emitting device including an organic layer having the dendrimer.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: October 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeoung-In Yi, Yoon-Hyun Kwak, Seung-Gak Yang, Hee-Yeon Kim, Jae-Yong Lee