Patents by Inventor Chang Won YOON

Chang Won YOON 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: 10372430
    Abstract: In a method of compiling an updated program having a plurality of updated functions that is updated from an original program having a plurality of original functions, it is determined whether a first original function corresponding to a first updated function exists, it is determined whether the first updated function is changed from the first original function, a first optimization combination for the first updated function is searched when the first original function does not exist or when the first updated function is changed from the first original function, a second optimization combination applied to the first original function is read from a configuration database storing optimization combinations for the original functions when the first original function exists and the first updated function is not changed from the first original function, and the updated program is compiled using the first optimization combination or the second optimization combination.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 6, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Hye-Yeon Chung, Han-Jun Kim, Jong-Won Lee, Chang-Su Kim, Seon-Yeong Heo, Jun-Mo Park, Jong-Hee Yoon
  • Publication number: 20190136274
    Abstract: The present invention relates to a recombinant microorganism capable of producing putrescine, in which the microorganism is modified to have enhanced NCgl2522 activity, thereby producing putrescine in a high yield, and a method for producing putrescine using the microorganism.
    Type: Application
    Filed: January 11, 2019
    Publication date: May 9, 2019
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Kyoung Min LEE, Hee Kyoung JUNG, Young Lyeol YANG, Hye Won UM, Chang Gyeom KIM, Hong Xian LI, Su Jin PARK, Jong Hyun YOON, Baek Seok LEE, Sun Young LEE
  • Patent number: 10276875
    Abstract: An anode for a molten carbonate fuel cell (MCFC) having improved creep property by adding CeO2 and/or Cr for imparting creep resistance to nickel-aluminum alloy and nickel as materials for an anode is provided. Improved sintering property, creep property and increased mechanical strength of a molten carbonate fuel cell may be obtained accordingly.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: April 30, 2019
    Assignee: Korean Institute of Science and Technology
    Inventors: Hyung Chul Ham, Min-Jae Lee, Chang-Whan Lee, Seong Cheol Jang, Sun-Hee Choi, Hyun Seo Park, Chang Won Yoon, Sung Pil Yoon, Jonghee Han, Suk Woo Nam, Tae Hoon Lim, Jin Young Kim
  • Publication number: 20190039890
    Abstract: A hydrogen production device is provided. The device comprises: a dry reforming reaction unit for directly reacting methane and carbon dioxide in biogas to produce a synthesis gas containing hydrogen; and a gas shift unit for reacting carbon monoxide in the synthesis gas produced in the dry reforming reaction unit with water vapor to produce carbon dioxide and hydrogen, and for capturing the produced carbon dioxide.
    Type: Application
    Filed: July 26, 2018
    Publication date: February 7, 2019
    Inventors: Hyung Chul HAM, Byeong Wan KWON, Chan Hyun LEE, Joohyeng OH, Seong Cheol JANG, Sun-Hee CHOI, Hyun Seo PARK, Chang Won YOON, Jonghee HAN, Sung Pil YOON, Suk Woo NAM, Ki Bong LEE
  • Patent number: 10186712
    Abstract: Provided is a catalyst for an oxygen reduction reaction, including an alloy in which two metals are mixed, in which the corresponding alloy is an alloy of iridium (Ir); and silicon (Si), phosphorus (P), germanium (Ge), or arsenic (As). The corresponding catalyst for the oxygen reduction reaction may have excellent price competitiveness while exhibiting a catalytic activity which is equal to or similar to that of an existing Pt catalyst. Accordingly, when the catalyst is used, the amount of platinum catalyst having low price competitiveness may be reduced, so that a production unit cost of a system to which the corresponding catalyst is applied may be lowered.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 22, 2019
    Assignee: KOREA INSTITUE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyung Chul Ham, Jinwon Cho, Hyun Seo Park, Jong Hyun Jang, Sung Jong Yoo, Chang Won Yoon, Hyoung-Juhn Kim, Sung Pil Yoon, Jonghee Han, Suk Woo Nam
  • Publication number: 20180269493
    Abstract: Provided are: a dry reforming catalyst, in which a noble metal (M) is doped in a nickel yttria stabilized zirconia complex (Ni/YSZ) and an alloy (M-Ni alloy) of the noble metal (M) and nickel is formed at Ni sites on a surface of the nickel yttria stabilized zircona (YSZ); a method for producing the dry reforming catalyst using the noble metal/glucose; and a method for performing dry reforming using the catalyst. The present invention can exhibit a significantly higher dry reforming activity as compared with Ni/YSZ catalysts. Furthermore, the present invention can have an improved long-term performance by suppressing or preventing the deterioration. Furthermore, the preparing method is useful in performing the alloying of noble metal with Ni at Ni sites on the Ni/YSZ surface and can simplify the preparing process, and thus is suitable in mass production.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 20, 2018
    Inventors: Suk Woo NAM, Chang Won YOON, Yeong Cheon KIM, Yong Min KIM, Jonghee HAN, Sung Pil YOON, Hyung Chul HAM, Jihoon JEONG, Seok-Keun KOH
  • Patent number: 9993806
    Abstract: Provided is a method for preparing a catalyst for a dehydrogenation reaction of formic acid, the method including: preparing a nitrogen-doped carbon support; forming a mixed solution including a first aqueous metal precursor solution which includes palladium (Pd) and a second aqueous metal precursor solution which includes nickel (Ni); and forming a catalyst for a dehydrogenation reaction of formic acid by stirring the nitrogen-doped carbon support with the mixed solution, and then immobilizing alloy particles of Pd and Ni on the nitrogen-doped carbon support.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: June 12, 2018
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang Won Yoon, Yeong Cheon Kim, Hyun Seo Park, Hyung Chul Ham, Sung Pil Yoon, Jonghee Han, Suk Woo Nam, Seong Cheol Jang
  • Publication number: 20180123139
    Abstract: Provided is a catalyst for an oxygen reduction reaction, including an alloy in which two metals are mixed, in which the corresponding alloy is an alloy of iridium (Ir); and silicon (Si), phosphorus (P), germanium (Ge), or arsenic (As). The corresponding catalyst for the oxygen reduction reaction may have excellent price competitiveness while exhibiting a catalytic activity which is equal to or similar to that of an existing Pt catalyst. Accordingly, when the catalyst is used, the amount of platinum catalyst having low price competitiveness may be reduced, so that a production unit cost of a system to which the corresponding catalyst is applied may be lowered.
    Type: Application
    Filed: October 23, 2017
    Publication date: May 3, 2018
    Inventors: Hyung Chul HAM, Jinwon CHO, Hyun Seo PARK, Jong Hyun JANG, Sung Jong YOO, Chang Won YOON, Hyoung-Juhn KIM, Sung Pil YOON, Jonghee HAN, Suk Woo NAM
  • Publication number: 20180093889
    Abstract: Provided is a liquid hydrogen storage material including 1,1?-biphenyl and 1,1?-methylenedibenzene, the liquid hydrogen storage material including the corresponding 1,1?-biphenyl and 1,1?-methylenedibenzene at a weight ratio of 1:1 to 1:2.5. The corresponding liquid hydrogen storage material has excellent hydrogen storage capacity value by including materials having high hydrogen storage capacity, and is supplied in a liquid state, and as a result, it is possible to minimize initial investment costs and the like required when the corresponding liquid hydrogen storage material is used as a hydrogen storage material in a variety of industries.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 5, 2018
    Inventors: Chang Won YOON, Dajung HAN, Yeong Cheon KIM, Hyun Seo PARK, Hyung Chul HAM, Sung Pil YOON, Jonghee HAN, Tae Hoon LIM, Suk Woo NAM
  • Publication number: 20180085738
    Abstract: Provided is a method for preparing a catalyst for a dehydrogenation reaction of formate and a hydrogenation reaction of bicarbonate, the method including: adding a silica colloid to a polymerization step of polymerizing aniline and reacting the resulting mixture to form a poly(silica-aniline) composite; carbonizing the corresponding poly(silica-aniline) composite under an atmosphere of an inert gas; removing silica particles from the corresponding poly(silica-aniline) composite to form a polyaniline-based porous carbon support; and fixing palladium particles on the corresponding polyaniline-based porous carbon support to prepare the catalyst.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 29, 2018
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Rutgers University
    Inventors: Chang Won Yoon, Hyung Chul Ham, Suk Woo Nam, Tewodros Asefa, Katherine Koh, Jonghee Han, Sung Pil Yoon, Hyun Seo Park, Mina Jeon
  • Publication number: 20180078925
    Abstract: Provided is a method for preparing a catalyst for a dehydrogenation reaction of formic acid, the method including: preparing a nitrogen-doped carbon support; forming a mixed solution including a first aqueous metal precursor solution which includes palladium (Pd) and a second aqueous metal precursor solution which includes nickel (Ni); and forming a catalyst for a dehydrogenation reaction of formic acid by stirring the nitrogen-doped carbon support with the mixed solution, and then immobilizing alloy particles of Pd and Ni on the nitrogen-doped carbon support.
    Type: Application
    Filed: September 19, 2017
    Publication date: March 22, 2018
    Inventors: Chang Won YOON, Yeong Cheon KIM, Hyun Seo PARK, Hyung Chul HAM, Sung Pil YOON, Jonghee HAN, Suk Woo NAM, Seong Cheol JANG
  • Publication number: 20180048009
    Abstract: Disclosed are a method for supplying molten carbonate fuel cell with electrolyte and a molten carbonate fuel cell using the same, wherein a molten carbonate electrolyte is generated from a molten carbonate electrolyte precursor compound in a molten carbonate fuel cell and is supplied to the molten carbonate fuel cell.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 15, 2018
    Inventors: Sung Pil YOON, Jonghee HAN, Hyung Chul HAM, Chang Won YOON, Sun-Hee CHOI, Hyun Seo PARK, Yeong Cheon KIM, Chang-Whan LEE, Hyoung-Juhn KIM, Tae Hoon LIM, Suk Woo NAM, Seong Cheol JANG
  • Publication number: 20170369169
    Abstract: The present invention relates to an unmanned aerial vehicle system having a multi-rotor type rotary wing. The unmanned aerial vehicle system having a multi-rotor type rotary wing includes a first unmanned aerial vehicle, at least one second unmanned aerial vehicle, and a bridge that connects the first unmanned aerial vehicle and the at least one second unmanned aerial vehicle to be separable from each other, wherein the at least one second unmanned aerial vehicle is moveable by the first unmanned aerial vehicle in a state where the at least one second unmanned aerial vehicle is coupled to the first unmanned aerial vehicle by the bridge without being driven, and the at least one second unmanned aerial vehicle is separable from the first unmanned aerial vehicle which is in flight.
    Type: Application
    Filed: December 12, 2016
    Publication date: December 28, 2017
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Taikjin LEE, Suk Woo NAM, Chang Won YOON, Hyun Seo PARK, Young Min JHON, Seok LEE, Min-Jun CHOI
  • Patent number: 9806346
    Abstract: Disclosed is a homogeneous catalyst having a single phase of Perovskite oxide, wherein at least one doping element is substituted at site A, site B or sites A and B in ABO3 Perovskite type oxide so that the wettability with a liquid molten carbonate electrolyte may be decreased. The catalyst may have high catalytic activity, inhibit catalyst poisoning caused by creepage and evaporation of a liquid molten carbonate electrolyte, maintain high reaction activity for a long time, provide high methane conversion, and allow production of synthetic gas having a high proportion of hydrogen.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: October 31, 2017
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung Pil Yoon, Hyoung-Juhn Kim, Chang Won Yoon, Seong Cheol Jang, Sun-Hee Choi, Jonghee Han, Hyung Chul Ham
  • Publication number: 20170197828
    Abstract: The present invention provides a hydrogen generating apparatus and a hydrogen generating method, wherein the hydrogen generating apparatus generates hydrogen by dehydrating formic acid, and comprises: a reactor for containing water and a heterogeneous catalyst; a formic acid feeder for feeding formic acid into the reactor; and a moisture remover for removing moisture generated from the reactor.
    Type: Application
    Filed: January 27, 2015
    Publication date: July 13, 2017
    Inventors: Chang Won YOON, Suk Woo NAM, Yeong Cheon KIM, Jonghee HAN, Sung Pil YOON, Hyoung-Juhn KIM, Taekhyun OH, Tae Hoon LIM, Jin Young KIM, Sun-Hee CHOI, Hyung Chul HAM
  • Publication number: 20170187043
    Abstract: Disclosed is an anode for a molten carbonate fuel cell (MCFC) having improved creep property by adding an additive for imparting creep resistance to nickel-aluminum alloy and nickel as materials for an anode. Improved sintering property, creep property and increased mechanical strength of a molten carbonate fuel cell may be obtained accordingly.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 29, 2017
    Inventors: Hyung Chul HAM, Min-Jae LEE, Chang-Whan LEE, Seong Cheol JANG, Sun-Hee CHOI, Hyun Seo PARK, Chang Won YOON, Sung Pil YOON, Jonghee HAN, Suk Woo NAM, Tae Hoon LIM, Jin Young KIM
  • Publication number: 20170005342
    Abstract: Disclosed is a carbon support for a fuel cell catalyst that supports a metal. The carbon support includes a conductive carbon support and nitrogen atoms doped into the conductive carbon support. Also disclosed is a method for preparing the carbon support. Also disclosed is a catalyst including the carbon support. The catalyst has greatly improved degradation resistance compared to conventional catalysts for fuel cells. In addition, the catalyst is not substantially degraded even when applied to a single cell.
    Type: Application
    Filed: December 28, 2015
    Publication date: January 5, 2017
    Inventors: Jin Young KIM, Sung Jong YOO, Dirk HENKENSMEIER, Jong Hyun JANG, Hyoung-Juhn KIM, Yeon Hun JEONG, Nayoung KIM, Chang Won YOON, Jonghee HAN, Suk Woo NAM, Tae Hoon LIM
  • Patent number: 9522427
    Abstract: Provided are a perfluorinated sulfonic acid polymer membrane having a porous surface layer, which includes a surface layer and a bottom layer present at the bottom of the surface layer, wherein the surface layer is a porous layer, and the bottom layer is non-porous dense layer, and a method for preparing the same through a solvent evaporation process.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 20, 2016
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dirk Henkensmeier, Quoc Khanh Dang, Chang Won Yoon, Eun Ae Cho, Suk Woo Nam, Tae Hoon Lim, Hyoung-Juhn Kim, Jong Hyun Jang
  • Patent number: 9431664
    Abstract: Provided is a method for preparing nickel-aluminum alloy powder at low temperature, which is simple and economical and is capable of solving the reactor corrosion problem. The method for preparing nickel-aluminum alloy powder at low temperature includes: preparing a powder mixture by mixing nickel powder and aluminum powder in a reactor and adding aluminum chloride into the reactor (S1); vacuumizing the inside of the reactor and sealing the reactor (S2); and preparing nickel-aluminum alloy powder by heat-treating the powder mixture in the sealed reactor at low temperature (S3).
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: August 30, 2016
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyung Chul Ham, Shin Ae Song, Seong Cheol Jang, Yong Min Kim, Jonghee Han, Hyoung-Juhn Kim, Tae Hoon Lim, Suk Woo Nam, Sung Pil Yoon, Chang Won Yoon, Yeong Cheon Kim
  • Publication number: 20160006040
    Abstract: Disclosed is a homogeneous catalyst having a single phase of Perovskite oxide, wherein at least one doping element is substituted at site A, site B or sites A and B in ABO3 Perovskite type oxide so that the wettability with a liquid molten carbonate electrolyte may be decreased. The catalyst may have high catalytic activity, inhibit catalyst poisoning caused by creepage and evaporation of a liquid molten carbonate electrolyte, maintain high reaction activity for a long time, provide high methane conversion, and allow production of synthetic gas having a high proportion of hydrogen.
    Type: Application
    Filed: July 6, 2015
    Publication date: January 7, 2016
    Inventors: Sung Pil YOON, Hyoung-Juhn KIM, Chang Won YOON, Seong Cheol JANG, Sun-Hee CHOI, Jonghee HAN, Hyung Chul HAM