Patents by Inventor Chang-Hwan Shin
Chang-Hwan Shin 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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Publication number: 20240118196Abstract: In the case of a gas in which several gases are mixed, a type and concentration of the gas may be incorrectly measured when measured using only an optical band-pass filter. The invention of the present application is directed to providing a technology in which a plurality of broadband band-pass filters having overlapping regions are provided to calculate a magnitude of absorption for each wavelength band for light passing through each broadband band-pass filter, thereby identifying the presence of a gas of interest and the presence of a gas other than the gas of interest.Type: ApplicationFiled: September 8, 2023Publication date: April 11, 2024Inventors: Cheol Woo NAM, Byung Yul MOON, Eung Yul KIM, Jae Hwan KIM, Chun Ho SHIN, Kwang Hun PARK, Myun Gu CHOI, Chang Hwang CHOI, Yong Geol KIM, Jae Min JEON
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Patent number: 11943985Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.Type: GrantFiled: June 7, 2021Date of Patent: March 26, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Jin Ho Park, Kyu Il Han, Chang Hwan Kwak, Dong Hyeok Lim, Hwa Yong Shin, Ji Hyung Lee
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Publication number: 20240066092Abstract: Provided are a curcumin nanoparticle complex having a modified particle surface and a method for preparing same. A curcumin nanoparticle complex includes curcumin and phospholipids and has a particle size of less than 1000 nm. A first coating layer containing a cationic material and/or a second coating layer containing an anionic material can be further added.Type: ApplicationFiled: September 1, 2023Publication date: February 29, 2024Applicant: BINOTEC CO., LTD.Inventors: Gi Hyun Jang, Chang Hwan Seok, Ji Won Shin, Yun Geum Sang Gwak, Yu Mi Kim
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Patent number: 11043273Abstract: An operating method of a memory device including a plurality of strings on a substrate, wherein the plurality of strings include a main string connected to a bit line and a dummy string spaced apart from the bit line, the operating method including: pre-programming the dummy string; and erasing the main string and the dummy string, wherein the pre-programming includes: applying a pre-program voltage to a word line connected to the dummy string; applying a pass voltage to a ground selection line connected to a ground selection transistor of the dummy string; and applying a common source line voltage to a common source line connected to the dummy string.Type: GrantFiled: September 25, 2019Date of Patent: June 22, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chang-hwan Shin, Cheol Song, Chang-sub Lee
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Publication number: 20200273522Abstract: An operating method of a memory device including a plurality of strings on a substrate, wherein the plurality of strings include a main string connected to a bit line and a dummy string spaced apart from the bit line, the operating method including: pre-programming the dummy string; and erasing the main string and the dummy string, wherein the pre-programming includes: applying a pre-program voltage to a word line connected to the dummy string; applying a pass voltage to a ground selection line connected to a ground selection transistor of the dummy string; and applying a common source line voltage to a common source line connected to the dummy string.Type: ApplicationFiled: September 25, 2019Publication date: August 27, 2020Inventors: CHANG-HWAN SHIN, CHEOL SONG, CHANG-SUB LEE
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Patent number: 9831239Abstract: Provided is a negative capacitance FinFET device including a FinFET device including a gate stack, a drain electrode and a source electrode formed on a substrate and a ferroelectric negative capacitor connected to the gate stack of the FinFET device and having a negative capacitance. The FinFET device has an extension length (Lext) from a side-wall of the gate stack to the drain electrode or the source electrode and the extension length is set such that a size of a hysteresis window in the negative capacitance FinFET device is 1 V or less.Type: GrantFiled: March 31, 2017Date of Patent: November 28, 2017Assignee: University of Seoul Industry Cooperation FoundationInventors: Chang Hwan Shin, Eun Ah Ko
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Patent number: 9136025Abstract: A dual-cooled fuel rod's spacer grid with upper and lower dimples, including a blocking area of a flow passage that coolant flows through is reduced and dual-cooled fuel rods are supported, and reduces a turbulent flow of the coolant as well as vibrations of the dual-cooled fuel rods, thereby lessening fretting damage done to the rods. The spacer grid includes a plurality of unit grid straps, each of which includes a body disposed in a vertical direction, an upper dimple protruding from an upper portion of the body, and a lower dimple spaced apart from the upper dimple in a downward direction and protruding from a lower portion of the body. The unit grid straps form a grid structure that have inner grid holes into which the dual-cooled fuel rods are held, and the held dual-cooled fuel rods are each supported in four directions by the upper and lower dimples.Type: GrantFiled: September 12, 2011Date of Patent: September 15, 2015Assignees: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd.Inventors: Chang Hwan Shin, Kang Hee Lee, Dong-Seok Oh, Wang Kee In, Tae Hyun Chun, Kun Woo Song
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Patent number: 8885790Abstract: A lower end plug for an annular nuclear fuel rod includes a support with a great slenderness ratio, a coolant inflow part with an inner inflow space and a plurality of inflow holes in a wall thereof so as to interact with the inflow space, coupled to a lower end of the annular nuclear fuel rod at an upper end thereof, and extending from an upper end of the support in a reverse conical shape such that the inflow space interact with an inner channel of the annular nuclear fuel rod, and a coupler extending from a lower end of the support and coupled with a handing tool of the annular nuclear fuel rod. Thus, although a bottoming phenomenon of the annular nuclear fuel rod occurs, the coolant can be supplied to the inner channel of the annular nuclear fuel rod through the inflow holes of the lower end plug.Type: GrantFiled: April 26, 2013Date of Patent: November 11, 2014Assignees: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd.Inventors: Dong seok Oh, Tae hyun Chun, Wang kee In, Chang hwan Shin, Hyung kyu Kim, Young ho Lee, Kyung-Ho Yoon, Kang-Hee Lee, Jae-Yong Kim, Kun woo Song
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Patent number: 8879684Abstract: A truss-reinforced spacer grid and a method of manufacturing the same are provided, in which truss members having a small diameter are woven to form a truss structure surrounded by an external plate, and the truss structure is joined to the external plate to thereby improve the strength of the mechanical structure. The truss-reinforced spacer grid includes a truss structure in which horizontal trusses formed by horizontally weaving a plurality of truss members are vertically disposed at regular intervals, and an external plate is joined with ends of the horizontal trusses and surrounds the truss structure.Type: GrantFiled: August 3, 2010Date of Patent: November 4, 2014Assignees: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd.Inventors: Kyung Ho Yoon, Hyung Kyu Kim, Jae Yong Kim, Young Ho Lee, Kang Hee Lee, Tae Hyun Chun, Wang Ki In, Dong Seok Oh, Chang Hwan Shin, Kun Woo Song, Ki Ju Kang
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Patent number: 8693612Abstract: A spacer grid for nuclear fuel rods includes a plurality of unit spacer grids stacked one on top of another. Each unit spacer grid includes a plurality of unit spacer grid straps disposed at regular intervals in a row, and a plurality of fixing grid straps connected to respective opposite ends of the unit spacer grid straps so as to fix the unit spacer grid straps. Each unit spacer grid strap has convexities alternating with each other on opposite sides thereof at regular intervals, and at least one of the convexities has a diameter greater than the others. The unit spacer grids are rotated in one direction by a 90 or 180 degree angle when being stacked.Type: GrantFiled: September 11, 2009Date of Patent: April 8, 2014Assignee: Korea Atomic Energy Research InstituteInventors: Young Ho Lee, Kang Hee Lee, Jae Yong Kim, Kyung Ho Yoon, Hyung Kyu Kim, Chang Hwan Shin, Dong Seok Oh, Wang Ki In, Tae Hyun Chun, Kun Woo Song
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Publication number: 20130259188Abstract: A lower end plug for an annular nuclear fuel rod includes a support with a great slenderness ratio, a coolant inflow part with an inner inflow space and a plurality of inflow holes in a wall thereof so as to interact with the inflow space, coupled to a lower end of the annular nuclear fuel rod at an upper end thereof, and extending from an upper end of the support in a reverse conical shape such that the inflow space interact with an inner channel of the annular nuclear fuel rod, and a coupler extending from a lower end of the support and coupled with a handing tool of the annular nuclear fuel rod. Thus, although a bottoming phenomenon of the annular nuclear fuel rod occurs, the coolant can be supplied to the inner channel of the annular nuclear fuel rod through the inflow holes of the lower end plug.Type: ApplicationFiled: April 26, 2013Publication date: October 3, 2013Applicants: KOREA HYDRO AND NUCLEAR POWER CO., LTD, KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Dong seok OH, Tae hyun CHUN, Wang kee IN, Chang hwan SHIN, Hyung kyu KIM, Young ho LEE, Kyung-Ho YOON, Kang-Hee LEE, Jae-Yong KIM, Kun woo SONG
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Patent number: 8520795Abstract: An intermediate end plug assembly for a segmented fuel rod can stably support the fuel rod to the end of its cycle even if an interval between the fuel rods becomes narrow due to application of a dual-cooled fuel rod, and reduce excess vibration induced by flows of interior and exterior channels of the dual-cooled fuel rod for obtaining high burnup and output. To this end, the fuel rod has a segmented structure so as to make its length short. A lower intermediate end plug includes at least one channel hole, through which a coolant flows into an internal channel of the fuel rod, so that a possibility of causing departure from nuclear boiling ratio (DNBR) of the dual-cooled fuel rod is reduced.Type: GrantFiled: April 9, 2009Date of Patent: August 27, 2013Assignee: Korea Atomic Energy Research InstituteInventors: Kyung Ho Yoon, Jae Yong Kim, Young Ho Lee, Kun Woo Song, Tae Hyun Chun, Dong Seok Oh, Wang Ki In, Hyung Kyu Kim, Chang Hwan Shin, Kang Hee Lee
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Patent number: 8275088Abstract: A perforated plate support supports dual-cooled fuel rods, each of which has concentric outer and inner tubes and is coupled with upper and lower end plugs at upper and lower ends thereof, and guide thimbles, each of which is used as a passage for a control rod. The perforated plate support is formed as a support plate having the shape of a flat plate, which includes internal channel holes, each of which has a diameter corresponding to an outer diameter of the inner tube, guide thimble holes, each of which has a diameter corresponding to an outer diameter of the guide thimble, and sub-channel holes around each internal channel hole. The upper or lower end of the dual-cooled fuel rod is coupled to the support plate such that the outer diameter of the inner tube is matched with the diameter of the internal channel hole.Type: GrantFiled: April 10, 2009Date of Patent: September 25, 2012Assignees: Korea Atomic Energy Research institute, Korea Hydro and Nuclear Power Co., Ltd.Inventors: Kyung-Ho Yoon, Hyung-Kyu Kim, Jae-Yong Kim, Young-Ho Lee, Kang-Hee Lee, Tae-Hyun Chun, Wang-Kee In, Dong-Seok Oh, Chang Hwan Shin, Kun-Woo Song
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Patent number: 8243872Abstract: A spacer grid can be applied to close-spaced nuclear fuel rods. The spacer grid is directed to solve the problem in which, as the outer diameter of each nuclear fuel rod increases due to the use of dual-cooled nuclear fuel rods for improving cooling performance and obtaining high combustion and high output power, the gap between the neighboring nuclear fuel rods is narrowed to thus make it impossible to use an existing spacer grid. The spacer grid is a combination of unit grid straps, each of which has supports for supporting each of the nuclear fuel rods set in a narrow array and has a sheet shape, which are combined with each other. The supports are located at positions shifted from the longitudinal central line of each unit grid strap toward sub-channels.Type: GrantFiled: June 26, 2008Date of Patent: August 14, 2012Assignee: Korea Atomic Energy Research InstituteInventors: Kang-Hee Lee, Hyung-Kyu Kim, Kyung-Ho Yoon, Young-Ho Lee, Jae-Yong Kim, Tae-Hyun Chun, Wang-Kee In, Dong-Seok Oh, Chang-Hwan Shin
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Publication number: 20120063562Abstract: A dual-cooled fuel rod's spacer grid with upper and lower dimples, including a blocking area of a flow passage that coolant flows through is reduced and dual-cooled fuel rods are supported, and reduces a turbulent flow of the coolant as well as vibrations of the dual-cooled fuel rods, thereby lessening fretting damage done to the rods. The spacer grid includes a plurality of unit grid straps, each of which includes a body disposed in a vertical direction, an upper dimple protruding from an upper portion of the body, and a lower dimple spaced apart from the upper dimple in a downward direction and protruding from a lower portion of the body. The unit grid straps form a grid structure that have inner grid holes into which the dual-cooled fuel rods are held, and the held dual-cooled fuel rods are each supported in four directions by the upper and lower dimples.Type: ApplicationFiled: September 12, 2011Publication date: March 15, 2012Applicants: KOREA HYDRO AND NUCLEAR POWER CO., LTD., KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Chang Hwan SHIN, Kang Hee LEE, Dong-Seok OH, Wang Kee IN, Tae Hyun CHUN, Kun Woo SONG
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Publication number: 20110064184Abstract: A spacer grid for nuclear fuel rods includes a plurality of unit spacer grids stacked one on top of another. Each unit spacer grid includes a plurality of unit spacer grid straps disposed at regular intervals in a row, and a plurality of fixing grid straps connected to respective opposite ends of the unit spacer grid straps so as to fix the unit spacer grid straps. Each unit spacer grid strap has convexities alternating with each other on opposite sides thereof at regular intervals, and at least one of the convexities has a diameter greater than the others. The unit spacer grids are rotated in one direction by a 90 or 180 degree angle when being stacked.Type: ApplicationFiled: September 11, 2009Publication date: March 17, 2011Applicant: Korea Atomic Energy Research InstituteInventors: Young Ho Lee, Kang Hee Lee, Jae Yong Kim, Kyung Ho Yoon, Hyung Kyu Kim, Chang Hwan Shin, Dong Seok Oh, Wang Ki In, Tae Hyun Chun, Kun Woo Song
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Publication number: 20110051882Abstract: A truss-reinforced spacer grid and a method of manufacturing the same are provided, in which truss members having a small diameter are woven to form a truss structure surrounded by an external plate, and the truss structure is joined to the external plate to thereby improve the strength of the mechanical structure. The truss-reinforced spacer grid includes a truss structure in which horizontal trusses formed by horizontally weaving a plurality of truss members are vertically disposed at regular intervals, and an external plate is joined with ends of the horizontal trusses and surrounds the truss structure.Type: ApplicationFiled: August 3, 2010Publication date: March 3, 2011Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KOREA HYDRO AND NUCLEAR POWER CO., LTD.Inventors: Kyung Ho Yoon, Hyung Kyu Kim, Jae Yong Kim, Young Ho Lee, Kang Hee Lee, Tae Hyun Chun, Wang Ki In, Dong Seok Oh, Chang Hwan Shin, Kun Woo Song, Ki Ju Kang
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Publication number: 20100172460Abstract: A perforated plate support supports dual-cooled fuel rods, each of which has concentric outer and inner tubes and is coupled with upper and lower end plugs at upper and lower ends thereof, and guide thimbles, each of which is used as a passage for a control rod. The perforated plate support is formed as a support plate having the shape of a flat plate, which includes internal channel holes, each of which has a diameter corresponding to an outer diameter of the inner tube, guide thimble holes, each of which has a diameter corresponding to an outer diameter of the guide thimble, and sub-channel holes around each internal channel hole. The upper or lower end of the dual-cooled fuel rod is coupled to the support plate such that the outer diameter of the inner tube is matched with the diameter of the internal channel hole.Type: ApplicationFiled: April 10, 2009Publication date: July 8, 2010Applicants: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd.Inventors: Kyung-Ho Yoon, Hyung-Kyu Kim, Jae-Yong Kim, Young-Ho Lee, Kang-Hee Lee, Tae-Hyun Chun, Wang-Kee In, Dong-Seok Oh, Chang Hwan Shin, Kun-Woo Song
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Patent number: RE49015Abstract: Provided is a negative capacitance FinFET device including a FinFET device including a gate stack, a drain electrode and a source electrode formed on a substrate and a ferroelectric negative capacitor connected to the gate stack of the FinFET device and having a negative capacitance. The FinFET device has an extension length (Lext) from a side-wall of the gate stack to the drain electrode or the source electrode and the extension length is set such that a size of a hysteresis window in the negative capacitance FinFET device is 1 V or less.Type: GrantFiled: June 5, 2019Date of Patent: April 5, 2022Inventors: Chang Hwan Shin, Eun Ah Ko
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Patent number: RE49563Abstract: Provided is a negative capacitance FinFET device including a FinFET device including a gate stack, a drain electrode and a source electrode formed on a substrate and a ferroelectric negative capacitor connected to the gate stack of the FinFET device and having a negative capacitance. The FinFET device has an extension length (Lext) from a side-wall of the gate stack to the drain electrode or the source electrode and the extension length is set such that a size of a hysteresis window in the negative capacitance FinFET device is 1 V or less.Type: GrantFiled: February 15, 2022Date of Patent: June 27, 2023Inventors: Chang Hwan Shin, Eun Ah Ko