Patents by Inventor Jei-Won Yeon
Jei-Won Yeon 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).
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Patent number: 11735329Abstract: The present invention relates to a radioactive chemical waste treatment apparatus including an adsorption unit including an radioactive chemical waste adsorption member for adsorbing and separating radioactive chemical wastes from radioactive chemical waste-containing fluid, and a regeneration unit which is in fluidic communication with the adsorption unit and is for regenerating the radioactive chemical waste adsorption member by desorbing the radioactive chemical wastes from the adsorption member with the radioactive chemical wastes adsorbed thereonto, and to a radioactive chemical waste treatment method including (A) adsorbing radioactive chemical wastes onto a radioactive chemical waste adsorption member and separating the radioactive chemical wastes from a radioactive chemical waste-containing fluid, and (B) desorbing the radioactive chemical wastes from the radioactive chemical waste adsorption member with the radioactive chemical wastes adsorbed thereonto, and regenerating the radioactive chemical wastType: GrantFiled: October 14, 2020Date of Patent: August 22, 2023Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Sang Eun Bae, Hwa Kyeung Jeong, Dong Woo Lee, Tae Hong Park, Jei Won Yeon, Kun Ho Chung, Sang Ho Lim, Jai Il Park, Wan Sik Cha, Byung Man Kang
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Publication number: 20210118587Abstract: The present invention relates to a radioactive chemical waste treatment apparatus including an adsorption unit including an radioactive chemical waste adsorption member for adsorbing and separating radioactive chemical wastes from radioactive chemical waste-containing fluid, and a regeneration unit which is in fluidic communication with the adsorption unit and is for regenerating the radioactive chemical waste adsorption member by desorbing the radioactive chemical wastes from the adsorption member with the radioactive chemical wastes adsorbed thereonto, and to a radioactive chemical waste treatment method including (A) adsorbing radioactive chemical wastes onto a radioactive chemical waste adsorption member and separating the radioactive chemical wastes from a radioactive chemical waste-containing fluid, and (B) desorbing the radioactive chemical wastes from the radioactive chemical waste adsorption member with the radioactive chemical wastes adsorbed thereonto, and regenerating the radioactive chemical wastType: ApplicationFiled: October 14, 2020Publication date: April 22, 2021Inventors: Sang Eun BAE, Hwa Kyeung JEONG, Dong Woo LEE, Tae Hong PARK, Jei Won YEON, Kun Ho CHUNG, Sang Ho LIM, Jai Il PARK, Wan Sik CHA, Byung Man KANG
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Patent number: 10933401Abstract: The present invention relates to a magnetic cesium adsorbent, a preparation method therefor, and a cesium removal method using the same, the preparation method comprising the steps of: (a) preparing a metal hexacyanoferrate; and (b) hydrothermally reacting the metal hexacyanoferrate so as to prepare a metal hexacyanoferrate having a rhombohedral crystal structure.Type: GrantFiled: July 4, 2017Date of Patent: March 2, 2021Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Tae Hong Park, Young Jin Cho, Sang Eun Bae, Sang Ho Lim, Jai Il Park, Young Sang Youn, Jei Won Yeon
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Publication number: 20190210004Abstract: The present invention relates to a magnetic cesium adsorbent, a preparation method therefor, and a cesium removal method using the same, the preparation method comprising the steps of: (a) preparing a metal hexacyanoferrate; and (b) hydrothermally reacting the metal hexacyanoferrate so as to prepare a metal hexacyanoferrate having a rhombohedral crystal structure.Type: ApplicationFiled: July 4, 2017Publication date: July 11, 2019Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Tae Hong PARK, Young Jin CHO, Sang Eun BAE, Sang Ho LIM, Jai Il PARK, Young Sang YOUN, Jei Won YEON
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Patent number: 9618468Abstract: The present disclosure relates to a method for measuring electrical conductivity and a system for measuring electrical conductivity using the same. The method includes obtaining a cell constant of a conductance cell using a conductivity standard solution, pouring a solution desired to be measured in the conductance cell, and applying predetermined direct current (DC) voltages to electrodes, disposed in the conductance cell, in a manner of changing the predetermined DC voltages in stages at each preset time (t), obtaining resistance of the solution, as a slope, from a linear relationship between the voltage and a peak current, measured for each voltage, and calculating electrical conductivity of the solution using the cell constant and the resistance of the solution.Type: GrantFiled: October 24, 2013Date of Patent: April 11, 2017Assignees: KOREA HYDRO & NUCLEAR POWER CO., LTD., KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Jong Yun Kim, Yong Suk Choi, Sang Eun Bae, Jei Won Yeon, Kyuseok Song
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Patent number: 9291595Abstract: A monitoring method of metal ions or oxygen ions applicable to a high concentration non-aqueous electrolyte includes: applying a potential in a non-aqueous electrolyte to obtain current information with respect to the potential; varying the potential applied in the non-aqueous electrolyte containing metal ion concentration or oxygen ion concentration such that the metal ion concentration or the oxygen ion concentration is maintained in spite of the potential being applied; detecting a linear relationship among the concentration, the current, and passed charges in the non-aqueous electrolyte by repeatedly performing the obtaining step and the varying step, while changing the concentration; and calculating metal ion concentration or oxygen ion concentration of the non-aqueous electrolyte in pyroprocessing of the non-aqueous electrolyte by using the linear relationship.Type: GrantFiled: March 12, 2013Date of Patent: March 22, 2016Assignees: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KOREA HYDRO & NUCLEAR POWER CO., LTD.Inventors: Sang Eun Bae, Kyuseok Song, Dae Hyeon Kim, Yong Joon Park, Jong Yun Kim, Jei Won Yeon
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Patent number: 9144771Abstract: An apparatus for filtering airborne radioactive iodine is provided. The apparatus includes a housing defining an interior space and comprising an inlet for receiving air and an outlet for discharging the air; and a composition placed in the interior space for trapping airborne radioactive iodine between the inlet and the outlet. The composition comprises one or more salts selected from the group consisting of an alkali metal chloride and an alkaline earth metal chloride. A method of filtering airborne radioactive iodine is further provided. The method includes providing the foregoing apparatus at a nuclear facility and blowing air to flow from the inlet to the outlet and contact the composition placed in the interior space, whereby airborne radioactive iodine is trapped in the interior space.Type: GrantFiled: June 5, 2013Date of Patent: September 29, 2015Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.Inventors: Jei-Won Yeon, Sang Hyuk Jung, Jong-Yun Kim, Kyuseok Song, Hee-Jung Im
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Patent number: 9014324Abstract: Disclosed is a coolant with dispersed neutron poison micro-particles, used in a supercritical water-cooled reactor (SCWR) emergency core cooling system. Since the neutron poison micro-particles are uniformly dispersed in the coolant of the emergency core cooling system for a long period time, their fluidity is not lowered even though the polarity of water is changed in a supercritical state. Therefore, the neutron poison micro-particles absorb neutrons produced from nuclear fission in a nuclear reactor core. Accordingly, the neutron poison micro-particles can be appropriately used as a means for controlling neutrons and stopping a nuclear reactor in the SCWR emergency core cooling system.Type: GrantFiled: September 14, 2009Date of Patent: April 21, 2015Assignee: Korea Atomic Energy Research InstituteInventors: Jei-Won Yeon, Kyuseok Song, Yoon-Yeong Bae, Jong-Yun Kim, Jinsung Jang
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Publication number: 20150050816Abstract: A method of preparing a silicon thin film, silicon thin film prepared using the method, and an electronic device including the silicon thin film are provided. The method includes applying an oxidized silicon element solution to a substrate and sintering the silicon oxide film to prepare a compact silicon oxide thin film, electrochemically reducing the silicon oxide thin film to form a porous silicon film, and re-sintering the porous silicon film. Therefore, the silicon thin film used in semiconductors, solar cells, secondary batteries and the like can be easily prepared at a low cost with a smaller number of processes than the conventional methods, and thus price competitiveness of products can be enhanced.Type: ApplicationFiled: August 19, 2014Publication date: February 19, 2015Inventors: Sang Eun Bae, Jong-Yun Kim, Jei-Won Yeon, Tae-Hong Park, Kyuseok Song, Dae Hyeon Kim, Young Hwan Cho, Yong Joon Park, Yeong-Keong Ha
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Patent number: 8855259Abstract: System and method for detecting and/or predicting in a field the leakage of nuclear reactor coolant that may occur at the pressure boundary of the primary system of a nuclear reactor. The system and method for detecting the leakage of nuclear reactor coolant uses a laser induced emission spectrum. The leakage of coolant is detected by detecting boron (B), a main component of the coolant, in corrosive products generated at the nuclear reactor pressure boundary on the basis of laser spectroscopy. An embodiment of the system for detecting leakage of nuclear reactor coolant may include a laser generator, a laser focusing lens, an emission collector, and emission spectrum analyzer.Type: GrantFiled: December 8, 2010Date of Patent: October 7, 2014Assignee: Korea Atomic Energy Research InstituteInventors: Jei-Won Yeon, Kyuseok Song, Euo-Chang Jung
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Publication number: 20140132288Abstract: The present disclosure relates to a method for measuring electrical conductivity and a system for measuring electrical conductivity using the same. The method includes obtaining a cell constant of a conductance cell using a conductivity standard solution, pouring a solution desired to be measured in the conductance cell, and applying predetermined direct current (DC) voltages to electrodes, disposed in the conductance cell, in a manner of changing the predetermined DC voltages in stages at each preset time (t), obtaining resistance of the solution, as a slope, from a linear relationship between the voltage and a peak current, measured for each voltage, and calculating electrical conductivity of the solution using the cell constant and the resistance of the solution.Type: ApplicationFiled: October 24, 2013Publication date: May 15, 2014Applicants: KOREA HYDRO & NUCLEAR POWER CO., LTD., KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Jong Yun KIM, Yong Suk CHOI, Sang Eun BAE, Jei Won YEON, Kyuseok SONG
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Patent number: 8670951Abstract: The present invention relates to an electronic scale having an air pressure change compensation function, which can precisely measure the weight of an object to be weighed even in an environment in which air pressure changes moment by moment in an airtight space such as in a glove box. According to the present invention, there is provided an electronic scale having an internal air pressure measurement sensor, by which the function of correcting the weight of an object to be weighed is provided even in an environment in which air pressure changes such as in the glove box is provided, thus enabling the weight of a sample to be precisely measured even in an environment in which air pressure changes moment by moment.Type: GrantFiled: September 8, 2011Date of Patent: March 11, 2014Assignees: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., LtdInventors: Jei-Won Yeon, Kyuseok Song, Sang Eun Bae, Jong-Yun Kim, Hong-Joo Ahn, Yong Joon Park
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Patent number: 8643377Abstract: A method of detecting impurities in a high-temperature aqueous solution and an apparatus of detecting impurities for the same. Specifically, the present invention provides a method of detecting impurities in a high-temperature aqueous solution comprising a reducing agent using an electrochemical water chemistry technology detecting the electrochemical current varied according to the degree in which the impurities in the high-temperature aqueous solution hinder the formation of an oxide film that is formed on a noble metal electrode, and an impurity detecting apparatus comprising a noble metal electrode, a counter electrode, and a device of applying the electrochemical potential and measuring the electrochemical current for the method of detecting impurities.Type: GrantFiled: December 8, 2010Date of Patent: February 4, 2014Assignee: Korea Atomic Energy Research InstituteInventors: Jei-Won Yeon, Kyuseok Song, Jaesik Hwang, Myung Hee Yun
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Publication number: 20130323149Abstract: An apparatus for filtering airborne radioactive iodine is provided. The apparatus includes a housing defining an interior space and comprising an inlet for receiving air and an outlet for discharging the air; and a composition placed in the interior space for trapping airborne radioactive iodine between the inlet and the outlet. The composition comprises one or more salts selected from the group consisting of an alkali metal chloride and an alkaline earth metal chloride. A method of filtering airborne radioactive iodine is further provided. The method includes providing the foregoing apparatus at a nuclear facility and blowing air to flow from the inlet to the outlet and contact the composition placed in the interior space, whereby airborne radioactive iodine is trapped in the interior space.Type: ApplicationFiled: June 5, 2013Publication date: December 5, 2013Inventors: Jei-Won YEON, Sang Hyuk JUNG, Jong-Yun KIM, Kyuseok SONG, Hee-Jung IM
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Publication number: 20130136223Abstract: A method for treating neutrons generated from spent nuclear fuel is provided, which includes a step of injecting neutron absorption material into the spent nuclear fuel storage water in which cooling function is lost. Accordingly, as the neutron absorption material in the form of particles is injected into a spent nuclear storage pool missing cooling function and deposited on the surface of the spent nuclear fuel, the possibility reaching nuclear criticality is reduced since the neutrons generated from spent nuclear fuel are absorbed. Also, immediate neutron absorbing power is provided upon refilling the pool water into the spent nuclear fuel storage pool in which pool water is depleted.Type: ApplicationFiled: July 27, 2012Publication date: May 30, 2013Inventors: Jei-Won YEON, Jong-Yun KIM, Euo-Chang JUNG, KyuSeok SONG
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Publication number: 20120123721Abstract: The present invention relates to an electronic scale having an air pressure change compensation function, which can precisely measure the weight of an object to be weighed even in an environment in which air pressure changes moment by moment in an airtight space such as in a glove box. According to the present invention, there is provided an electronic scale having an internal air pressure measurement sensor, by which the function of correcting the weight of an object to be weighed is provided even in an environment in which air pressure changes such as in the glove box is provided, thus enabling the weight of a sample to be precisely measured even in an environment in which air pressure changes moment by moment.Type: ApplicationFiled: September 8, 2011Publication date: May 17, 2012Applicants: KOREA HYDRO AND NUCLEAR POWER CO., LTD, KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Jei-Won YEON, Kyuseok SONG, Sang Eun BAE, Jong-Yun KIM, Hong-Joo AHN, Yong Joon PARK
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Publication number: 20120081133Abstract: The present invention relates to a method of detecting impurities in a high-temperature aqueous solution and an apparatus of detecting impurities for the same. Specifically, the present invention provides a method of detecting impurities in a high-temperature aqueous solution comprising a reducing agent using an electrochemical water chemistry technology detecting the electrochemical current varied according to the degree in which the impurities in the high-temperature aqueous solution hinder the formation of an oxide film that is formed on a noble metal electrode, and an impurity detecting apparatus comprising a noble metal electrode, a counter electrode, and a device of applying the electrochemical potential and measuring the electrochemical current for the method of detecting impurities.Type: ApplicationFiled: December 8, 2010Publication date: April 5, 2012Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Jei-Won YEON, Kyuseok Song, Jaesik Hwang, Myung Hee Yun
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Patent number: 8016992Abstract: Disclosed herein is a reference electrode including an electrolyte containing an optically-active material, including: an electrode body provided at an end thereof with an electrolyte separation membrane and charged therein with an optically-active material and an electrolyte solution; an inner electrode disposed in the electrode body to be immersed in the electrolyte solution; and an absorbance measurement probe for transmitting light to the electrolyte solution and collecting reflected light waves, which is disposed in the electrode body to be immersed in the electrolyte solution. Since the concentration of an electrode reaction material, such as Cl?, in the electrolyte is calculated using the absorbance of the electrolyte solution containing the optically-active material, the change in potential of the reference electrode can be properly corrected even when the reference electrode is exposed to a test environment for a long period of time and thus the concentration of the electrolyte changes.Type: GrantFiled: May 22, 2009Date of Patent: September 13, 2011Assignees: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd.Inventors: Jei-Won Yeon, In-Kyu Choi, Won-Ho Kim, Kyuseok Song
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Publication number: 20110164715Abstract: System and method for detecting and/or predicting in a field the leakage of nuclear reactor coolant that may occur at the pressure boundary of the primary system of a nuclear reactor. The system and method for detecting the leakage of nuclear reactor coolant uses a laser induced emission spectrum. The leakage of coolant is detected by detecting boron (B), a main component of the coolant, in corrosive products generated at the nuclear reactor pressure boundary on the basis of laser spectroscopy. An embodiment of the system for detecting leakage of nuclear reactor coolant may include a laser generator, a laser focusing lens, an emission collector, and emission spectrum analyzer.Type: ApplicationFiled: December 8, 2010Publication date: July 7, 2011Applicant: Korea Atomic Energy Research InstituteInventors: Jei-Won Yeon, Kyuseok Song, Euo-Chang Jung
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Publication number: 20100239062Abstract: Disclosed is a coolant with dispersed neutron poison micro-particles, used in a supercritical water-cooled reactor (SCWR) emergency core cooling system. Since the neutron poison micro-particles are uniformly dispersed in the coolant of the emergency core cooling system for a long period time, their fluidity is not lowered even though the polarity of water is changed in a supercritical state. Therefore, the neutron poison micro-particles absorb neutrons produced from nuclear fission in a nuclear reactor core. Accordingly, the neutron poison micro-particles can be appropriately used as a means for controlling neutrons and stopping a nuclear reactor in the SCWR emergency core cooling system.Type: ApplicationFiled: September 14, 2009Publication date: September 23, 2010Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Jei-Won YEON, Kyuseok SONG, Yoon-Yeong BAE, Jong-Yun KIM, Jinsung JANG