Patents by Inventor Sang-Hyuck Kim
Sang-Hyuck 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).
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Patent number: 11944661Abstract: The present invention provides a pharmaceutical composition for prevention or treatment of a stress disease and depression, the pharmaceutical composition be safely useable without toxicity and side effects by using an extract of leaves of Vaccinium bracteatum Thunb., which is natural resource of Korea, so that the reduction of manufacturing and production costs and the import substitution and export effects can be expected through the replacement of a raw material for preparation with a plant inhabiting in nature.Type: GrantFiled: February 7, 2018Date of Patent: April 2, 2024Assignee: JEONNAM BIOINDUSTRY FOUNDATIONInventors: Chul Yung Choi, Dool Ri Oh, Yu Jin Kim, Eun Jin Choi, Hyun Mi Lee, Dong Hyuck Bae, Kyo Nyeo Oh, Myung-A Jung, Ji Ae Hong, Kwang Su Kim, Hu Won Kang, Jae Yong Kim, Sang O Pan, Sung Yoon Park, Rack Seon Seong
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Publication number: 20240099116Abstract: Provided is a method for preparing a perovskite crystal that improves the performance of a photovoltaic cell. One embodiment of the present disclosure provides a method for preparing a perovskite crystal, the method including: a step S1 of preparing a perovskite solution containing a perovskite precursor and a first polar aprotic solvent; and a step S2 of preparing a perovskite crystal by mixing the perovskite solution and an antisolvent, wherein the antisolvent includes a second polar aprotic solvent.Type: ApplicationFiled: September 15, 2023Publication date: March 21, 2024Inventors: Woo Sik Kim, Sang Hyuk Im, Tarak Nath Mandal, Jin Hyuck Heo
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Publication number: 20240081001Abstract: A display device includes a display panel having a folding axis extending in a first direction; and a panel supporter disposed on a surface of the display panel. The panel supporter includes a first layer including a first base resin and first fiber yarns extending in the first direction and dispersed in the first base resin, a second layer disposed on the first layer, the second layer including a second base resin and second fiber yarns extending in a second direction intersecting the first direction and dispersed in the second base resin, and a third layer disposed on the second layer, the third layer including a third base resin and third fiber yarns extending in the first direction and dispersed in the third base resin.Type: ApplicationFiled: May 1, 2023Publication date: March 7, 2024Applicant: Samsung Display Co., LTD.Inventors: Soh Ra HAN, Yong Hyuck LEE, Hong Kwan LEE, Hyun Jun CHO, Min Ji KIM, Sung Woo EO, Eun Gil CHOI, Sang Woo HAN
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Patent number: 8922959Abstract: The apparatus for preventing a secondary accident by short of sensing lines in a high voltage battery using a fuse, includes: a plurality of battery modules provided with a plurality of battery cells; a battery pack including a plurality of battery modules; a battery management system (BMS) for monitoring and controlling voltage of each battery cell provided in each battery pack to monitor the status of each battery cell; sensing lines connected between the battery module and the battery management system to sense voltage of each battery cell of each battery pack; and a passive safety device to be connected in series to a terminal of each battery cell provided in each battery pack when a short accident that a closed circuit is formed in the sensing line occurs.Type: GrantFiled: June 16, 2011Date of Patent: December 30, 2014Assignee: SK Innovation Co., Ltd.Inventors: Sei Hoon Cho, Soo Yeup Jang, Young Lim Choi, Sang Hyuck Kim
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Publication number: 20130100563Abstract: The apparatus for preventing a secondary accident by short of sensing lines in a high voltage battery using a fuse, includes: a plurality of battery modules provided with a plurality of battery cells; a battery pack including a plurality of battery modules; a battery management system (BMS) for monitoring and controlling voltage of each battery cell provided in each battery pack to monitor the status of each battery cell; sensing lines connected between the battery module and the battery management system to sense voltage of each battery cell of each battery pack; and a passive safety device to be connected in series to a terminal of each battery cell provided in each battery pack when a short accident that a closed circuit is formed in the sensing line occurs.Type: ApplicationFiled: June 16, 2011Publication date: April 25, 2013Applicant: SK INNOVATION CO., LTD.Inventors: Sei Hoon Cho, Soo Yeup Jang, Young Lim Choi, Sang Hyuck Kim
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Patent number: 7627211Abstract: The present invention relates to a tunable dispersion and dispersion slope compensator based on an optical fiber grating in an optical communication system. The compensator includes: a first disk having a ring shape, wherein the first disk is configured to rotate; a second disk installed at an inner space of the first disk, wherein the second disk is configured not to rotate; a metal plate configured to bend as the first disk rotates; and an optical fiber grating adhered to the metal plate, wherein the optical fiber grating has different strains according to positions when the metal plate rotates.Type: GrantFiled: October 27, 2005Date of Patent: December 1, 2009Assignee: Korea Institute of Science and TechnologyInventors: Jun Kye Bae, Young Jun Lee, Sang Hyuck Kim, Sang Bae Lee
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Publication number: 20080232739Abstract: The present invention relates to a tunable dispersion and dispersion slope compensator based on an optical fiber grating in an optical communication system. The compensator includes: a first disk having a ring shape, wherein the first disk is configured to rotate; a second disk installed at an inner space of the first disk, wherein the second disk is configured not to rotate; a metal plate configured to bend as the first disk rotates; and an optical fiber grating adhered to the metal plate, wherein the optical fiber grating has different strains according to positions when the metal plate rotates.Type: ApplicationFiled: October 27, 2005Publication date: September 25, 2008Inventors: Jun Kye Bae, Young Jun Lee, Sang Hyuck Kim, Sang Bae Lee
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Patent number: 7251382Abstract: Disclosed herein is a functional tunable multichannel filter which is capable of adjusting channel spacing and/or a wavelength location using polarization controllers (?/2, (?/4). The functional tunable multichannel filter includes one or more polarization maintaining fibers, a first polarization controller (?/2), a second polarization controller (?/4) and a 3 dB coupler. Additionally, the functional tunable multichannel filter is configured to tune a wavelength and adjust channel spacing by adjusting polarization of an optical signal passing through each of the polarization maintaining fibers using the first and second polarization controllers.Type: GrantFiled: June 29, 2005Date of Patent: July 31, 2007Assignee: Korea Institute of Science and TechnologyInventors: Young Geun Han, Sang Hyuck Kim, Sang Bae Lee
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Patent number: 7171079Abstract: Provided is a tunable dispersion compensator based on an optical fiber grating for use in an optical transmission system. A tunable dispersion compensator comprises: a disk; a ring surrounding the disk, wherein the ring is rotatable independent of the disk; and a bendable plate crossing the disk and having end parts configured to move with the rotation of the ring, wherein at least one of the optical fiber grating is attached to the plate.Type: GrantFiled: September 8, 2004Date of Patent: January 30, 2007Assignee: Korea Institute of Science and TechnologyInventors: Jun-Kye Bae, Jun-Hee Kim, Young-Geun Han, Sang-Hyuck Kim, Sang-Bae Lee
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Patent number: 7003199Abstract: The present invention relates to a tunable distribution compensator, including: an optical fiber having a chirped optical fiber grating; first and second frames having first and second stepped portions, respectively, wherein the first stepped portion is symmetrically faced to the second stepped portion; a first metal plate with a predetermined length for attaching the optical fiber; a second metal plate seated on the first and second stepped portions; and a bending unit connected to the first and second frames and the second metal plate for symmetrically bending the optical fiber.Type: GrantFiled: December 27, 2004Date of Patent: February 21, 2006Assignee: Korea Institute of Science and TechnologyInventors: Sun-Min Choi, Jun-Kye Bae, Jun-Hee Kim, Young-Geun Han, Sang-Hyuck Kim, Sang-Bae Lee
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Publication number: 20050259697Abstract: Disclosed are a Raman or erbium-doped fiber laser using a few-mode fiber grating, and a long-distance remote sensor using the same that can simultaneously measure temperature and strain by separating temperature and strain components using Raman amplification or erbium amplification. When a multi-wavelength Raman or erbium-doped laser is configured by means of a short-period fiber grating serving as a few-mode fiber grating at one side of a resonator and a chirped fiber Bragg grating or tunable chirped fiber Bragg grating at the other side of the resonator, multi-wavelength laser signals are generated in different modes. Because wavelength shift and reflectivity vary with a change in temperature and strain, temperature and strain components can be simultaneously measured. Because an optical fiber of several tens of kilometers is used, it can be utilized as a sensing probe of the long-distance remote sensor.Type: ApplicationFiled: December 29, 2004Publication date: November 24, 2005Applicant: Korea Institute of Science and TechnologyInventors: Young-Geun Han, Sang-Bae Lee, Sang-Hyuck Kim, Ju-Han Lee
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Publication number: 20050169578Abstract: The present invention relates to a tunable distribution compensator, including: an optical fiber having a chirped optical fiber grating; first and second frames having first and second stepped portions, respectively, wherein the first stepped portion is symmetrically faced to the second stepped portion; a first metal plate with a predetermined length for attaching the optical fiber; a second metal plate seated on the first and second stepped portions; and a bending unit connected to the first and second frames and the second metal plate for symmetrically bending the optical fiber.Type: ApplicationFiled: December 27, 2004Publication date: August 4, 2005Inventors: Sun-Min Choi, Jun-Kye Bae, Jun-Hee Kim, Young-Geun Han, Sang-Hyuck Kim, Sang-Bae Lee
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Publication number: 20050084209Abstract: Provided is a tunable dispersion compensator based on an optical fiber grating for use in an optical transmission system. A tunable dispersion compensator comprises: a disk; a ring surrounding the disk, wherein the ring is rotatable independent of the disk; and a bendable plate crossing the disk and having end parts configured to move with the rotation of the ring, wherein at least one of the optical fiber grating is attached to the plate.Type: ApplicationFiled: September 8, 2004Publication date: April 21, 2005Inventors: Jun-Kye Bae, Jun-Hee Kim, Young-Geun Han, Sang-Hyuck Kim, Sang-Bae Lee
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Publication number: 20040086227Abstract: Disclosed is an optical fiber grating comprising: optic fiber having periodically formed gratings; and a temperature control method for independently controlling temperature along grating sections. In the optical fiber, the temperature is controlled along grating sections, the desired spectrum can be obtained by varying the refractive index of each unit section, and the fiber gratings can be applied to various optical communication devices.Type: ApplicationFiled: May 14, 2003Publication date: May 6, 2004Applicant: Korea Institute of Science and TechnologyInventors: Jun-Kye Bae, Sang-Hyuck Kim, Je-Myung Jeong, Sang-Bae Lee
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Publication number: 20040047559Abstract: The present invention discloses a multi-channel dispersion compensator and an optical transmission system having the same. According to the multi-channel dispersion compensator of the present invention, chirped optical fiber gratings are coupled in parallel to an arrayed waveguide grating device. The arrayed waveguide grating device demultiplexes multiplexed optical signal pulses and again multiplexes the demultiplexed optical signal pulses.Type: ApplicationFiled: December 6, 2002Publication date: March 11, 2004Inventors: Jong-Won Lee, Sang-Hyuck Kim, Sang-Bae Lee
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Patent number: 6424438Abstract: An apparatus and method for realizing an all-optical NOR logic device includes a distributed feedback laser diode and a tunable laser diode respectively generating two pump signals of different wavelengths. The apparatus also includes a pulse generator and a Mach-Zehnder modulator modulating the pump signals. The apparatus also includes a delay line adapted to delay a pump signal that has been split from the modulated pump signals and that travels along one optical path, and a polarization controller and an optical attenuator adapted to control another pump signal that has been split from the modulated pump signals and that travels along another optical path, to have the same polarization and intensity as those of the pump signal passing through the delay line. An Er-doped amplifier amplifies the sum of the pump signals so that the amplified pump signal sum saturates a semiconductor optical amplifier.Type: GrantFiled: November 17, 2000Date of Patent: July 23, 2002Assignee: Korea Institute of Science and TechnologyInventors: Young Tae Byun, Sang Hyuck Kim, Deok Ha Woo, Seok Lee, Dong Hwan Kim, Sun Ho Kim
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Patent number: 6356685Abstract: The gain control device in a semiconductor optical amplifier using an optical fiber grating includes an input unit for receiving an optical signal, an output unit for outputting an amplified optical signal, and input and output optical isolators connected to the input and output units to establish paths of the input and output optical signals. The gain control device further includes a tension-controllable optical fiber grating connected to the input optical isolator for fine adjustment of a reflection peak wavelength. A semiconductor optical amplifier connected to the tension-controllable optical fiber grating is also provided to amplify the optical signal. A power supply supplies power to the semiconductor optical amplifier to drive the optical amplifier. In addition, an optical fiber grating is connected to the semiconductor optical amplifier and has a predetermined reflection peak wavelength.Type: GrantFiled: October 5, 2000Date of Patent: March 12, 2002Assignee: Korea Institute of Science and TechnologyInventors: Dong Hwan Kim, Sang Bae Lee, Jae Cheol Jo, Sang Sam Choi, Young Min Jhon, Sang Hyuck Kim