Patents by Inventor Joon-hwan Lee
Joon-hwan Lee 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: 11976386Abstract: A method of preparing a carbon fiber including: preparing a precursor fiber for preparing a carbon fiber; and stabilizing the precursor fiber. The stabilization of the precursor fiber includes a first stabilization phase, a second stabilization phase, a third stabilization phase, and a fourth stabilization phase, which are set at four different temperatures between a temperature at which heat starts to be generated from the stabilization reaction of the precursor fiber and a temperature at which the generation of heat is maximized. Ozone gas is input while at least one phase of the third stabilization phase and the fourth stabilization phase is carried out.Type: GrantFiled: April 23, 2019Date of Patent: May 7, 2024Assignee: LG CHEM, LTD.Inventors: Jae Gil Choi, Ji Hye Shin, Joon Hee Cho, Su Jin Kim, Ki Hwan Kim, Il Ha Lee, Myung Su Jang
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Publication number: 20240099114Abstract: A display device may include a first electrode, a second electrode, an emission layer, an intervening layer, and a first encapsulation layer. The second electrode may overlap the first electrode. The emission layer may be disposed between the first electrode and the second electrode, may overlap the first electrode, and may include a light emitting material. The intervening layer may directly contact the second electrode, may be spaced from each of the first electrode and the emission layer, and may include a fluorine compound. A first section of the first encapsulation layer may overlap the emission layer. The intervening layer may be positioned between the second electrode and a second section of the first encapsulation layer.Type: ApplicationFiled: November 24, 2023Publication date: March 21, 2024Inventors: Jae Sik KIM, Jae Ik KIM, Jung Sun PARK, Seung Yong SONG, Duck Jung LEE, Yeon Hwa LEE, Joon Gu LEE, Kyu Hwan HWANG
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Publication number: 20240081850Abstract: Disclosed is an endoscope apparatus. The endoscope apparatus of the present invention includes: an endoscope including a flexible insertion section to be inserted into a human body; a flexible channel attached to the insertion section so that a part forms a passage in a longitudinal direction of the insertion section; and an assistant arm movably inserted into the passage and manipulated by a control device, and the assistant arm includes forceps capable of gripping a human body tissue, and a bending section bent by the control device to pull the human body tissue griped by the forceps.Type: ApplicationFiled: November 21, 2022Publication date: March 14, 2024Inventors: Dong Ho LEE, John KWON, Un Je YANG, Joon Hwan KIM, Woo Chul JEONG, Dong Soo KWON
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Patent number: 11923216Abstract: An apparatus and method for treating a substrate are provided. The apparatus includes at least one first process chamber configured to supply a developer onto the substrate; at least one second process chamber configured to treat the substrate using a supercritical fluid; a transfer chamber configured to transfer the substrate from the at least one first process chamber to the at least one second process chamber, while the developer supplied in the at least one first process chamber remains on the substrate; and a temperature and humidity control system configured to manage temperature and humidity of the transfer chamber by supplying a first gas of constant temperature and humidity into the transfer chamber.Type: GrantFiled: August 22, 2022Date of Patent: March 5, 2024Assignees: SAMSUNG ELECTRONICS CO., LTD., SEMES CO., LTD.Inventors: Seung Min Shin, Sang Jin Park, Hae Won Choi, Jang Jin Lee, Ji Hwan Park, Kun Tack Lee, Koriakin Anton, Joon Ho Won, Jin Yeong Sung, Pil Kyun Heo
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Patent number: 11053275Abstract: Provided herein is a method of preparing a bile acid derivative using a continuous flow reaction. When bile acid derivatives are synthesized using a continuous flow reaction according to the present invention, the reaction is very safe compared to an existing batch-type reaction, the reaction time is significantly reduced, and high-quality bile acid derivatives may be synthesized with high efficiency. In particularly, according to the present invention, a hydrogenation reaction proceeds under substantially water-free reaction conditions, and thus the conversion rate (UDCA: CDCA) of a UDCA hydrogenation reaction may be significantly enhanced.Type: GrantFiled: April 20, 2018Date of Patent: July 6, 2021Assignee: DAEWOONG BIO INC.Inventors: Tae Seop Hwang, Phil Goo Kang, Joon Hwan Lee, Jin Yong Eo, Seung Jae Lee
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Publication number: 20200283470Abstract: Provided herein is a method of preparing a bile acid derivative using a continuous flow reaction. When bile acid derivatives are synthesized using a continuous flow reaction according to the present invention, the reaction is very safe compared to an existing batch-type reaction, the reaction time is significantly reduced, and high-quality bile acid derivatives may be synthesized with high efficiency. In particularly, according to the present invention, a hydrogenation reaction proceeds under substantially water-free reaction conditions, and thus the conversion rate (UDCA:CDCA) of a UDCA hydrogenation reaction may be significantly enhanced.Type: ApplicationFiled: April 20, 2018Publication date: September 10, 2020Inventors: Tae Seop HWANG, Phil Goo KANG, Joon Hwan LEE, Jin Yong EO, Seung Jae LEE
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Patent number: 10547731Abstract: A method and electronic device are disclosed herein. The electronic device includes a display, a communication unit, a processor and a memory storing instructions. The process executes the instructions to implement the method, including establishing wireless communication with one or more IoT devices, displaying a user interface for managing IoT devices, receiving a user input selecting a group of IoT devices, transmitting first information including user account data to an external server, transmitting second information to another device, the first information also indicating a selected group of IoT devices, and the second information causing the other device to communicatively connect with the first external server.Type: GrantFiled: March 26, 2018Date of Patent: January 28, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Nam Jin Kim, Tae Jun Kim, Hae Na Kim, Yoe Chan Song, Jung Hwan Song, Sung Yeon Woo, Joon Hwan Lee, Pyo Je Cho, Han Jib Kim, Gyu Cheol Choi, Bo Kun Choi
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Publication number: 20180288209Abstract: A method and electronic device are disclosed herein. The electronic device includes a display, a communication unit, a processor and a memory storing instructions. The process executes the instructions to implement the method, including establishing wireless communication with one or more IoT devices, displaying a user interface for managing IoT devices, receiving a user input selecting a group of IoT devices, transmitting first information including user account data to an external server, transmitting second information to another device, the first information also indicating a selected group of IoT devices, and the second information causing the other device to communicatively connect with the first external server.Type: ApplicationFiled: March 26, 2018Publication date: October 4, 2018Inventors: Nam Jin KIM, Tae Jun KIM, Hae Na KIM, Yoe Chan SONG, Jung Hwan SONG, Sung Yeon WOO, Joon Hwan LEE, Pyo Je CHO, Han Jib KIM, Gyu Cheol CHOI, Bo Kun CHOI
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Patent number: 9945599Abstract: An air conditioner, having an outdoor unit and an indoor unit, to perform a heating operation and a defrosting operation, the air conditioner including a detection unit to detect a state of at least one selected between the outdoor unit and the indoor unit and to output the detected value, a controller to determine whether the air conditioner is in a stable state when the defrosting operation is completed and, upon determining that the air conditioner is in the stable state, to control the detected value output from the detection unit to determine entry time of the next defrosting operation, and a storage unit to store a value detected in the stable state. The entry time of the defrosting operation is accurately determined, thereby minimizing the number of times of the defrosting operation during the heating operation.Type: GrantFiled: June 10, 2014Date of Patent: April 17, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Suk Ho Lee, Il Yong Cho, Hyung Mo Koo, Chang Yong Lee, Joon Hwan Lee, Byoung Guk Lim
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Patent number: 9695820Abstract: A compressor capable of reducing oil foaming and reducing the waiting time taken until the heating of the compressor is completed, and a method of controlling the same, the method of controlling a compressor including sensing temperature of the oil in the compressor, if the temperature of the oil is below a reference temperature, performing a loss operation, in which an amount of heat radiation of the motor part is increased, while operating the motor part at a low speed, and if the temperature of the oil increases to be equal to or higher then reference temperature, performing an efficiency operation by converting an operation of the motor to a normal operation.Type: GrantFiled: April 17, 2013Date of Patent: July 4, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joon Hwan Lee, Kyoung Rock Kim, Byoung Guk Lim
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Patent number: 9614254Abstract: Disclosed are a safety device and a secondary battery using the same. The safety device includes a voltage sensitive heating device generating heat when a voltage difference between both ends thereof exceeds a predetermined voltage level and a temperature sensitive device having a reversible current ON/OFF function according to a temperature. The temperature sensitive device is coupled with the voltage sensitive heating device such that the temperature sensitive device detects the heat generated from the voltage sensitive heating device.Type: GrantFiled: September 7, 2005Date of Patent: April 4, 2017Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jae Hyun Lee, Joon Hwan Lee, Soo Hyun Ha, Jeong Ju Cho
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Patent number: 9350242Abstract: A power supply includes a rectifier circuit to rectify power, a smoothing circuit unit to smoothen a voltage of the rectified power, and a voltage drop circuit unit to drop the smoothened voltage. The voltage drop circuit unit includes an electric charge storage circuit to output the voltage-dropped voltage, a resonance circuit to receive first current from the smoothing circuit unit and to supply second current to the electric charge storage circuit, and a current interruption circuit to control the first current and the second current using zero current switching for performing switching when current does not flow using a resonance circuit.Type: GrantFiled: April 22, 2014Date of Patent: May 24, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joon Hwan Lee, Min Kwang Lee, Soon Bae Yang, Jae Jin Kim, Dong Gyu Lee, Jung Suk Chu
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Patent number: 9316380Abstract: The present invention relates to an optical plate for lighting capable of improving the brightness of light emitted from a light source and adjusting a viewing angle to alleviate side glare phenomenon. The present invention also relates to a lighting. The purpose of the present invention is to provide a structure in which a light-diffusing member and an optical viewing angle adjusting member can independently function; an integrated optical plate for lighting, wherein the thickness of the optical plate for lighting is reduced by the lamination of a light-diffusing member, a transmission layer, and an optical viewing angle adjusting member; a lighting apparatus using thereof.Type: GrantFiled: December 20, 2012Date of Patent: April 19, 2016Assignee: MIRAENANOTECH CO., LTD.Inventors: Sung-Woo Noh, Hak-Chung Lee, Joon-Hwan Lee, Su-Young Lee
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Patent number: 9040572Abstract: This invention relates to a method of preparing a benzoimidazole derivative at high purity and high yield so as to enable the production of the benzoimidazole derivative compound as an antagonist against a vanilloid reactor-1, and particularly to a method of preparing a benzoimidazole derivative at high purity and high yield, wherein the benzoimidazole derivative is synthesized using a novel intermediate, namely, benzaldehyde, and thereby the preparation process is simple so that it can be applied to production.Type: GrantFiled: September 27, 2011Date of Patent: May 26, 2015Assignee: Daewoong Pharmaceutical Co., Ltd.Inventors: In Woo Kim, Ji Duck Kim, Hong Chul Yoon, Hee Kyoon Yoon, Byung Goo Lee, Joon Hwan Lee, Young Mook Lim, Soo Jin Choi
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Publication number: 20150027144Abstract: An air conditioner, having an outdoor unit and an indoor unit, to perform a heating operation and a defrosting operation, the air conditioner including a detection unit to detect a state of at least one selected between the outdoor unit and the indoor unit and to output the detected value, a controller to determine whether the air conditioner is in a stable state when the defrosting operation is completed and, upon determining that the air conditioner is in the stable state, to control the detected value output from the detection unit to determine entry time of the next defrosting operation, and a storage unit to store a value detected in the stable state. The entry time of the defrosting operation is accurately determined, thereby minimizing the number of times of the defrosting operation during the heating operation.Type: ApplicationFiled: June 10, 2014Publication date: January 29, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Suk Ho LEE, II Yong CHO, Hyung Mo KOO, Chang Yong LEE, Joon Hwan LEE, Byoung Guk LIM
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Publication number: 20140362579Abstract: The present invention relates to an optical plate for lighting capable of improving the brightness of light emitted from a light source and adjusting a viewing angle to alleviate side glare phenomenon. The present invention also relates to a lighting. The purpose of the present invention is to provide a structure in which a light-diffusing member and an optical viewing angle adjusting member can independently function; an integrated optical plate for lighting, wherein the thickness of the optical plate for lighting is reduced by the lamination of a light-diffusing member, a transmission layer, and an optical viewing angle adjusting member; a lighting apparatus using thereof.Type: ApplicationFiled: December 20, 2012Publication date: December 11, 2014Applicant: MIRAENANOTECH CO., LTD.Inventors: Sung-Woo Noh, Hak-Chung Lee, Joon-Hwan Lee, Su-Young Lee
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Publication number: 20140327420Abstract: A power supply includes a rectifier circuit to rectify power, a smoothing circuit unit to smoothen a voltage of the rectified power, and a voltage drop circuit unit to drop the smoothened voltage. The voltage drop circuit unit includes an electric charge storage circuit to output the voltage-dropped voltage, a resonance circuit to receive first current from the smoothing circuit unit and to supply second current to the electric charge storage circuit, and a current interruption circuit to control the first current and the second current using zero current switching for performing switching when current does not flow using a resonance circuit.Type: ApplicationFiled: April 22, 2014Publication date: November 6, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Joon Hwan LEE, Min Kwang LEE, Soon Bae YANG, Jae Jin KIM, Dong Gyu LEE, Jung Suk CHU
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Patent number: 8673469Abstract: The present invention is an apparatus for protecting a secondary battery, in which, when the secondary battery such as a lithium-ion secondary battery is exposed to high temperature exceeding a working range due to a change in external environment, external impacts, and so on, or heated due to spontaneous generation of heat caused by internal defects, the secondary battery is discharged. The apparatus includes a thyristor or transistor having an anode and a cathode connected both terminals of the secondary battery respectively, and shorting both terminals of the secondary battery when gate current is supplied, and a temperature sensor detecting temperature of the secondary battery and supplying the gate current to the thyristor or transistor when the detected temperature is higher than predetermined temperature.Type: GrantFiled: July 20, 2006Date of Patent: March 18, 2014Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Joon Hwan Lee, Jae Hyun Lee, Soo Hyun Ha, Jeong Ju Cho, Sang Hoon Choy
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Publication number: 20140044562Abstract: A compressor capable of reducing oil foaming and reducing the waiting time taken until the heating of the compressor is completed, and a method of controlling the same, the method of controlling a compressor including sensing temperature of the oil in the compressor, if the temperature of the oil is below a reference temperature, performing a loss operation, in which an amount of heat radiation of the motor part is increased, while operating the motor part at a low speed, and if the temperature of the oil increases to be equal to or higher then reference temperature, performing an efficiency operation by converting an operation of the motor to a normal operation.Type: ApplicationFiled: April 17, 2013Publication date: February 13, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joon Hwan LEE, Kyoung Rock Kim, Byoung Guk Lim
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Patent number: 8574733Abstract: Disclosed is a protection circuit for a secondary battery and a secondary battery having the same, which can interrupt electric current input into the secondary battery when the temperature of the secondary battery increases due to an overcharge, and also can protect the secondary battery in the case where the already charged secondary battery is exposed to a high temperature due to the increase of an external or internal temperature of the secondary battery. The protection circuit includes: means having one end connected to a first electrode of the secondary battery, for restricting electric current; switching means for connecting a second electrode of the secondary battery to a first outer electrode, or to the current restriction means in response to temperature; and a conducting wire for connecting the first electrode of the secondary battery to a second outer electrode.Type: GrantFiled: May 10, 2006Date of Patent: November 5, 2013Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Jae Hyun Lee, Joon Hwan Lee, Soo Hyun Ha, Jeong Ju Cho