Patents by Inventor Jun Hyuk Choi
Jun Hyuk Choi 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: 20150270715Abstract: Provided are a power generation method and system of a power generator that can allow an output power of the power generator to be constant and cope with a case in which the velocity of a power generation source changes very quickly at a low lost. The power generation method includes determining a reference total power intended to be generated by a plurality of power generators, calculating a current command value through the reference total power and an instantaneous velocity sensed by each of the plurality of power generators, and regulating an output current of the power generator using the calculated current command value such that a total power output by the plurality of power generators is approximate to the reference total power.Type: ApplicationFiled: May 13, 2014Publication date: September 24, 2015Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Joon Sung Park, Jin Hong Kim, Jun Hyuk Choi, In Soung Jung
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Publication number: 20150210746Abstract: The present invention relates to a method for expressing, extracting and refining recombinant human growth hormone (hGH). More particularly, the present invention relates to a method for the intracellular expression of a target protein with minimizing the formation of insoluble inclusion bodies during the mass production of the protein in Escherichia coli system. The present invention also relates to a method for extracting and refining the target protein, particularly human growth hormone, with maximizing its solubility during the extraction and with providing a high yield but without losing the biological activity of the target protein.Type: ApplicationFiled: March 13, 2015Publication date: July 30, 2015Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCEInventors: Jun-Hyuk Choi, Sook-Kyung Kim, Minji Kim
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Patent number: 9028639Abstract: There is provided a method of manufacturing a stamp for a plasmonic nanolithography apparatus. The method includes forming metal patterns on a substrate, coating a hydrophobic thin film on external surfaces of the metal patterns to hydrophobic processing the external surfaces of the metal patterns, selectively hydrophilic processing only the external surfaces of the metal patterns, laminating a buffer layer on the substrate and the metal patterns, and transcribing the metal patterns and the buffer layer from the substrate to a base formed of light transmission material to be combined with the base.Type: GrantFiled: December 26, 2012Date of Patent: May 12, 2015Assignee: Korea Institute of Machinery & MaterialsInventors: Eung-Sug Lee, Joo Yun Jung, Jun Hyuk Choi, Jae Won Hahn
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Patent number: 8947028Abstract: Disclosed are a method and system for detecting a fault of a parallel coil type permanent magnet motor. This method includes driving a parallel coil type motor on the basis of a pre-defined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor on the basis of the phase current vector.Type: GrantFiled: March 18, 2013Date of Patent: February 3, 2015Assignee: Korea Electronics Technology InstituteInventors: Bon Gwan Gu, In Soung Jung, Jun Hyuk Choi, Joon Sung Park, Jin Hong Kim
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Publication number: 20150024940Abstract: The present invention relates to a herbicidal composition comprising, as active ingredients, a herbicidally active compound and an uracil compound or an agrochemically acceptable salt thereof. The herbicidal composition has excellent effects not only on selective control of monocotyledonous or dicotyledonous weeds in useful crop plants, but also on control of monocotyledonous or dicotyledonous weeds in semi-selective or non-selective areas.Type: ApplicationFiled: October 7, 2014Publication date: January 22, 2015Inventors: Kyoung Sung Kim, In Young Choi, Mi Sook Hong, Tae Joon Kim, Jun Hyuk Choi, Gi Jun Moon, Kyoung Sung Kim
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Publication number: 20140369385Abstract: The present disclosure relates to an apparatus and method for estimating a temperature of a motor using a Hall sensor. The method includes detecting, at a digital Hall sensor, a position of a rotor included in a motor and outputting an on signal in an operating period and an off signal in a release period according to a relative position of the rotor, calculating, at a temperature determining module, a difference between duration of the operating period and duration of the release period according to an output waveform of the digital Hall sensor, and then determining, at the temperature determining module, a temperature of the motor with reference to a temperature corresponding to the duration difference. Accordingly, it is possible to estimate the internal temperature of a motor without installing a temperature sensor in the motor, to maintain a small size of the motor, and to reduce production costs.Type: ApplicationFiled: April 4, 2014Publication date: December 18, 2014Applicant: Korea Electronics Technology InstituteInventors: Joon Sung PARK, Se Hyun Rhyu, In Soung Jung, Jun Hyuk Choi, Bon Gwan Gu, Jin Hong Kim
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Patent number: 8913353Abstract: A method and system for detecting a fault of a serial coil type permanent magnet motor includes driving the motor based on a predefined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor based on the phase current vector. The current compensation value is provided to a negative sequence current controller for calculating a faulty phase and a degree of a fault of the motor using the output of the negative sequence current controller and a fault model to which induced magnetic flux variations in a specific slot of a specific faulty phase of the motor and other slots of the same phase as the specific phase are applied, and applying a current reference value to which the calculated faulty phase and degree of fault are applied.Type: GrantFiled: April 9, 2013Date of Patent: December 16, 2014Assignee: Korea Electronics Technology InstituteInventors: Bon Gwan Gu, Jun Hyuk Choi, In Soung Jung, Joon Sung Park, Jin Hong Kim
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Publication number: 20140311662Abstract: In a method for fabricating an embedded pattern using a transfer-based imprinting, an adhesive layer is formed on a substrate. The adhesive layer has a photo curable resin. A stamp having a protruded pattern is prepared. A thin-film layer is formed on an outer surface of the protruded pattern of the stamp. The stamp having the thin-film layer contact with the adhesive layer is pressed to selectively transfer the thin-film layer of the protruded pattern to the adhesive layer. Ultraviolet rays (UV) are irradiated to cure the adhesive layer. The stamp is removed.Type: ApplicationFiled: February 28, 2014Publication date: October 23, 2014Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Jun-Hyuk CHOI, Eung-Sug LEE, Ji-Hye LEE, Jun-ho JEONG, Joo-Yun JUNG, Dae-Guen CHOI, Cheol-Hyeon KIM
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Publication number: 20140159621Abstract: Disclosed are a method and system for detecting a fault of a parallel coil type permanent magnet motor. This method includes driving a parallel coil type motor on the basis of a pre-defined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor on the basis of the phase current vector.Type: ApplicationFiled: March 18, 2013Publication date: June 12, 2014Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Bon Gwan GU, In Soung Jung, Jun Hyuk Choi, Joon Sung Park, Jin Hong Kim
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Publication number: 20140160602Abstract: A method and system for detecting a fault of a serial coil type permanent magnet motor includes driving the motor based on a predefined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor based on the phase current vector. The current compensation value is provided to a negative sequence current controller for calculating a faulty phase and a degree of a fault of the motor using the output of the negative sequence current controller and a fault model to which induced magnetic flux variations in a specific slot of a specific faulty phase of the motor and other slots of the same phase as the specific phase are applied, and applying a current reference value to which the calculated faulty phase and degree of fault are applied.Type: ApplicationFiled: April 9, 2013Publication date: June 12, 2014Applicant: Korea Electronics Technology InstituteInventors: Bon Gwan Gu, Jun Hyuk Choi, In Soung Jung, Joon Sung Park, Jin Hong Kim
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Patent number: 8486753Abstract: Disclosed are a patterning method of a metal oxide thin film using nanoimprinting, and a manufacturing method of a light emitting diode (LED). The method for forming a metal oxide thin film pattern using nanoimprinting includes: coating a photosensitive metal-organic material precursor solution on a substrate; preparing a mold patterned to have a protrusion and depression structure; pressurizing the photosensitive metal-organic material precursor coating layer with the patterned mold; forming a cured metal oxide thin film pattern by heating the pressurized photosensitive metal-organic material precursor coating layer or by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer while being heated; and removing the patterned mold from the metal oxide thin film pattern, and selectively further includes annealing the metal oxide thin film pattern.Type: GrantFiled: February 2, 2010Date of Patent: July 16, 2013Assignee: Korea Institute of Machinery and MaterialsInventors: Hyeong Ho Park, Jun Ho Jeong, Ki Don Kim, Dae Geun Choi, Jun Hyuk Choi, Ji Hye Lee, Soon Won Lee
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Patent number: 8247962Abstract: An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.Type: GrantFiled: November 19, 2008Date of Patent: August 21, 2012Assignee: Korea Institute of Machinery & MaterialsInventors: Jong-Youp Shim, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Eung-Sug Lee, So-Hee Jeon, Jae-R Youn, Jang-Joo Kim
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Patent number: 8193198Abstract: Disclosed are uracil compounds represented by Formula 1, a method for preparing the compounds, and a herbicide including the same as an active ingredient: wherein R1, R2, R3, R4, R5, X, Y, Z and W are the same as defined in the detailed description.Type: GrantFiled: September 24, 2009Date of Patent: June 5, 2012Assignees: Korea Research Institute of Chemical Technology, Dongbu HiTek Co., Ltd.Inventors: Young Kwan Ko, Kun Hoe Chung, Jae Wook Ryu, Jae Chun Woo, Dong Wan Koo, Dae Whang Kim, Tae Joon Kim, In Young Choi, Young Kwon Kim, Tae Hyun Oh, Jun Hyuk Choi, Mee Young Seok, Kyung Sung Kim, Bong Jin Chung
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Publication number: 20120100773Abstract: An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.Type: ApplicationFiled: January 3, 2012Publication date: April 26, 2012Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Jong-Youp SHIM, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Eung-Sug Lee, So-Hee Jeon, Jae-R. Youn, Jang-Joo Kim
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Publication number: 20110224083Abstract: Disclosed are uracil compounds represented by Formula 1, a method for preparing the compounds, and a herbicide including the same as an active ingredient: wherein R1, R2, R3, R4, R5, X, Y, Z and W are the same as defined in the detailed description.Type: ApplicationFiled: September 24, 2009Publication date: September 15, 2011Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, DONGBU HITEK CO., LTD.Inventors: Young Kwan Ko, Kun Hoe Chung, Jae Wook Ryu, Jae Chun Woo, Dong Wan Koo, Dae Whang Kim, Tae Joon Kim, In Young Choi, Young Kwon Kim, Tae Hyun Oh, Jun Hyuk Choi, Mee Young Seok, Kyung Sung Kim, Bong Jin Chung
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Patent number: 8013432Abstract: A package substrate includes an insulating substrate having a mount region including external terminals mounted to the insulating substrate and a clamp region having an opening receiving a molding material therein, the clamp region disposed adjacent to the mount region in a first direction, a circuit pattern formed on the insulating substrate, and a blocking member blocking the molding material from moving from the clamp region to the mount region when the package substrate loaded in a mold die is pressurized to form a molding member, wherein the blocking member is disposed on at least one side of the package substrate in the clamp region, and the blocking member receives the molding material therein.Type: GrantFiled: September 11, 2009Date of Patent: September 6, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Il Kwak, Jun-Hyuk Choi, Jeong-Sam Lee, Jong-Kak Jang
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Patent number: 7994053Abstract: A method for forming a metal oxide thin film pattern using nanoimprinting according to one embodiment of the present invention includes: coating a photosensitive metal-organic material precursor solution on a substrate; pressurizing the photosensitive metal-organic material precursor coating layer to a mold patterned to have a protrusion and depression structure; forming the metal oxide thin film pattern by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer to cure it; and removing the patterned mold from the metal oxide thin film pattern.Type: GrantFiled: December 30, 2009Date of Patent: August 9, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Hyeong-Ho Park, Dae-Geun Choi, Jun-Ho Jeong, Ki-Don Kim, Jun-Hyuk Choi, Ji-Hye Lee, Seong-Je Park, So-Hee Jeon, Sa-Rah Kim
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Patent number: 7990013Abstract: A stator coil of a slotless motor is disclosed in which the stator coil is formed in such a manner that respective both distal ends of two unit coil bodies, each unit coil body arranged to face each other, are respectively coupled to form a plurality of circular coil bodies, each circular coil body having a different inner diameter, and a circular coil body having a smaller inner diameter is sequentially inserted into an inner side of a circular coil body having a larger inner diameter, whereby a horizontal width of the plurality of unit coil bodies of U, V and W phases is equal there among to cause the strength of the magnetic field of U, V and W phases to be equal, and to allow the stator to be accurately manufactured, thereby catering to a designer's intention and markedly simplifying the assembly processes.Type: GrantFiled: January 28, 2009Date of Patent: August 2, 2011Assignee: Korea Electronics Technology InstituteInventors: Jung Moo Seo, Joo Han Kim, Se Hyun Rhyu, In Soung Jung, Seung Bin Lim, Jun Hyuk Choi, Young Kyoun Kim, Bon Gwan Gu
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Publication number: 20110169027Abstract: Disclosed are a patterning method of a metal oxide thin film using nanoimprinting, and a manufacturing method of a light emitting diode (LED). The method for forming a metal oxide thin film pattern using nanoimprinting includes: coating a photosensitive metal-organic material precursor solution on a substrate; preparing a mold patterned to have a protrusion and depression structure; pressurizing the photosensitive metal-organic material precursor coating layer with the patterned mold; forming a cured metal oxide thin film pattern by heating the pressurized photosensitive metal-organic material precursor coating layer or by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer while being heated; and removing the patterned mold from the metal oxide thin film pattern, and selectively further includes annealing the metal oxide thin film pattern.Type: ApplicationFiled: February 2, 2010Publication date: July 14, 2011Applicant: Korea Institute of Machinery & MaterialsInventors: Hyeong-Ho Park, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Ji-Hye Lee, Soon-Won Lee
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Publication number: 20110049548Abstract: A method for forming a metal oxide thin film pattern using nanoimprinting according to one embodiment of the present invention includes: coating a photosensitive metal-organic material precursor solution on a substrate; pressurizing the photosensitive metal-organic material precursor coating layer to a mold patterned to have a protrusion and depression structure; forming the metal oxide thin film pattern by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer to cure it; and removing the patterned mold from the metal oxide thin film pattern.Type: ApplicationFiled: December 30, 2009Publication date: March 3, 2011Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Hyeong-Ho Park, Dae-Geun Choi, Jun-Ho Jeong, Ki-Don Kim, Jun-Hyuk Choi, Ji-hye Lee, Seong-Je Park, So-Hee Jeon, Sa-Rah Kim