Patents by Inventor Han Sol Seo
Han Sol Seo 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: 20230320991Abstract: Disclosed is a process for non-stop production of encapsulated probiotics, in which an alginate hydrogel is spontaneously formed through a simple process of culturing probiotics in a medium containing an alginate, a salt that forms a hydrogel by binding to alginic acid, preferably an insoluble carbonate, and optionally an encapsulation enhancer, and probiotics are encapsulated by the alginate hydrogel, thereby not only greatly improving the probiotic encapsulation process but also remarkably improving the freeze-drying viability, heat tolerance, shelf stability, and in-vivo stability (acid resistance and bile resistance) of probiotics.Type: ApplicationFiled: June 10, 2023Publication date: October 12, 2023Inventors: Young-Hoo KIM, Hyeong-Eun KIM, Chi-Young HAN, Han Sol SEO, Tae-Yoon KIM, Sunghee LEE
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Patent number: 11781132Abstract: Disclosed are a method for DNA extraction in a sample for next generation sequencing (NGS) and a method of constructing a NGS library using the extracted DNA. The method for DNA extraction includes: preparing a mixture by mixing a biological sample with a buffer; applying microwaves to the mixture; and recovering DNA. The method of constructing a NGS library includes: extracting DNA according to the method for DNA extraction; amplifying a target DNA using primers; and purifying the amplified product and subjecting the purified product to library pooling.Type: GrantFiled: March 26, 2020Date of Patent: October 10, 2023Assignees: MACROGEN, INC., PSOMAGEN, INC.Inventors: Joshua Sungwoo Yang, Jaekyung Chon, Ik Jung Choi, Hyun Min Park, Jieun Park, Jeongsun Seo, Changhoon Kim, Jong Yeon Shin, Han Sol Seo, Jiwon Shin, In Hee Hwang, Seon Hye Sim, Chang Woo Cho, Kyuin Hwang, In Seon Kim, Hyung Il Lee, Jung Hyun Cho
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Patent number: 11004544Abstract: Disclosed is a method of providing biological data. The method includes the following steps performed by a data processing device: selecting a biological data set from a biological data pool; encrypting biological data included in the biological data set to produce encrypted biological data; transferring the encrypted biological data to a user; receiving a result of analysis on the encrypted biological data from the user; and transferring information on the encrypted biological data included in the result of the analysis to the user. The data processing device encrypts the biological data with a key determined according to a combination of biological data constituting the biological data set.Type: GrantFiled: January 15, 2020Date of Patent: May 11, 2021Assignees: MACROGEN, INC., PSOMAGEN, INC.Inventors: Joshua Sungwoo Yang, Jaekyung Chon, Ik Jung Choi, Hyun Min Park, Jieun Park, Jeongsun Seo, Changhoon Kim, Han Sol Seo, Jiwon Shin, In Hee Hwang, Seon Hye Sim, Chang Woo Cho, Nam Hee Kim, Hye Eun Lee, Kyuin Hwang
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Publication number: 20210130812Abstract: Disclosed are a method for DNA extraction in a sample for next generation sequencing (NGS) and a method of constructing a NGS library using the extracted DNA. The method for DNA extraction includes: preparing a mixture by mixing a biological sample with a buffer; applying microwaves to the mixture; and recovering DNA. The method of constructing a NGS library includes: extracting DNA according to the method for DNA extraction; amplifying a target DNA using primers; and purifying the amplified product and subjecting the purified product to library pooling.Type: ApplicationFiled: March 26, 2020Publication date: May 6, 2021Applicants: MACROGEN, INC., PSOMAGEN, INC.Inventors: JOSHUA SUNGWOO YANG, JAEKYUNG CHON, IK JUNG CHOI, HYUN MIN PARK, JIEUN PARK, JEONGSUN SEO, CHANGHOON KIM, JONG YEON SHIN, HAN SOL SEO, JIWON SHIN, IN HEE HWANG, SEON HYE SIM, CHANG WOO CHO, KYUIN HWANG, IN SEON KIM, HYUNG IL LEE, JUNG HYUN CHO
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Publication number: 20210052770Abstract: The present invention relates to a composition for bone grafting, comprising nucleic acids, a bone graft material, and a cationic polymer, and a bone graft kit for manufacturing the same. The composition for bone grafting, of the present invention, has been confirmed to promote the formation of a cushioning force that can respond to physiological stress and the formation of new bones at grafted sites, and has been confirmed to improve bone grafting convenience, and thus is expected to be effectively usable in the treatment of bone diseases.Type: ApplicationFiled: January 28, 2019Publication date: February 25, 2021Applicant: PHARMARESEARCH PRODUCTS CO., LTD.Inventors: Ik Soo KIM, Chul Ho SHIN, Min Hyeong PARK, Su Yeon LEE, Tae Gyun KIM, Sung Oh LEE, Han Sol SEO, Byoung Hwan KONG, Jeong Kuk LEE
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Publication number: 20200303040Abstract: Disclosed is a method of providing biological data. The method includes the following steps performed by a data processing device: selecting a biological data set from a biological data pool; encrypting biological data included in the biological data set to produce encrypted biological data; transferring the encrypted biological data to a user; receiving a result of analysis on the encrypted biological data from the user; and transferring information on the encrypted biological data included in the result of the analysis to the user. The data processing device encrypts the biological data with a key determined according to a combination of biological data constituting the biological data set.Type: ApplicationFiled: January 15, 2020Publication date: September 24, 2020Applicants: MACROGEN, INC., PSOMAGEN, INC.Inventors: JOSHUA SUNGWOO YANG, JAEKYUNG CHON, IK JUNG CHOI, HYUN MIN PARK, JIEUN PARK, JEONGSUN SEO, CHANGHOON KIM, HAN SOL SEO, JIWON SHIN, IN HEE HWANG, SEON HYE SIM, CHANG WOO CHO, NAM HEE KIM, HYE EUN LEE, KYUIN HWANG
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Publication number: 20190081477Abstract: The present invention relates to an active filter and a power management system comprising the same and, more particularly, to an active filter capable of managing power using an active filter having a function of removing harmonics and transmitting and receiving data about power. An active filter according to an embodiment of the present invention, which is electrically connected to a load to reduce the harmonics of a power current, comprises: a control unit for acquiring data on the power consumed by the load and adjusting the power consumed by the load on the basis of the acquired data; and a communication unit for transmitting at least one of the acquired data and data on the adjusted power consumption.Type: ApplicationFiled: October 4, 2016Publication date: March 14, 2019Applicant: Samsung Electronics Co., Ltd.Inventors: Han Sol SEO, Jong Hyun SHIN, Je Hyung CHO
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Patent number: 10084368Abstract: A motor driving apparatus includes an AC-DC conversion unit configured to rectify an AC power supplied from an external AC power source, a DC link unit configured to stabilize a voltage rectified by the AC-DC conversion unit, and a DC-AC conversion unit configured to supply the AC power to a motor using the DC voltage from the DC link unit. The DC link unit may include one pair of film capacitors configured to remove a ripple of the rectified voltage, and the DC-AC conversion unit may include a 3-level inverter receiving the DC voltage from the one pair of film capacitors to supply the AC power to the motor.Type: GrantFiled: March 14, 2016Date of Patent: September 25, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Je Hyung Cho, Sun Jin Kim, Han Sol Seo
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Patent number: 9954475Abstract: A motor driving apparatus includes a rectifying circuit to rectify an AC power supplied from an external AC power source, one pair of film capacitors to output a DC voltage and a neutral point voltage by removing a ripple of a voltage rectified by the AC-DC conversion unit, a 3-level inverter to supply a driving current to a motor using the DC voltage applied from the DC link unit, and a control module to control the 3-level inverter. The control module includes a motor speed control module to control the rotation of the motor, a DC voltage control module to stabilize the DC voltage, a neutral point voltage control module to stabilize the neutral point voltage, and a stabilizing voltage limiting module to control the DC voltage control module and the neutral point voltage control module according to an output of the motor speed control module.Type: GrantFiled: March 14, 2016Date of Patent: April 24, 2018Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Je Hyung Cho, Seung-Ki Sul, Se Hwa Choe, Han Sol Seo
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Patent number: 9941785Abstract: A power factor correction circuit and an electronic product including the same are disclosed. This technology configures a bridgeless circuit with no rectifier diode by using an additional switch, eliminating conduction loss due to the diode and reducing common mode EMI noise of the power factor correction circuit. A power factor correction circuit includes at least one inductor directly connected to an AC input stage, an output capacitor to smooth the output voltage, first switching elements to control current to store magnetic energy in the inductor, and a second switching element to maintain a substantially constant voltage between a ground voltage of an AC input stage and a ground voltage of an output stage.Type: GrantFiled: December 28, 2015Date of Patent: April 10, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-Han Kim, Han Sol Seo, Bo Hyung Cho, Paul Jang, Sang Woo Kang
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Patent number: 9853583Abstract: Disclosed herein are a motor driving apparatus and a controlling method thereof. The motor driving apparatus includes a motor having a rotor including a permanent magnet, and a stator, an inverter to supply a driving power to the motor, and a control unit to estimate a parameter using a startup estimation when a rotation speed of the rotor is less than a preset startup speed, to estimate the parameter using a driving estimation with compensating for a dead time when the rotation speed of the rotor is equal to or greater than the preset startup speed and a torque of the rotor is equal to or less than a preset driving torque, and to estimate the parameter using the driving estimation without the dead time compensation when the rotation speed of the rotor is equal to or greater than the preset startup speed and the torque of the rotor exceeds the preset driving torque.Type: GrantFiled: December 30, 2015Date of Patent: December 26, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Jong-Hyun Shin, Jin Woong Kim, Han Sol Seo, Jung-Ik Ha
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Patent number: 9819294Abstract: An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.Type: GrantFiled: September 2, 2015Date of Patent: November 14, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Young Jae Park, Han Sol Seo, Bodrov Alexey, Seung Ki Sul, Hyun-Sam Jung, Seung-Jun Chee
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Patent number: 9762119Abstract: The present disclosure relates generally to a switch driving circuit and power factor correction circuit having the same, and more particularly, to a technology to provide a negative offset using Zener diodes to prevent malfunctions in driving a switch. The switch driving circuit to operate a switch implemented with a Field Effect Transistor (FET) includes a first Zener diode connected to a control input end of the switch; a capacitor connected in parallel with the first Zener diode; and second and third Zener diodes for providing a negative offset to fix a voltage applied between the gate and source of the switch to a negative value.Type: GrantFiled: December 10, 2015Date of Patent: September 12, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Jin Han Kim, Han Sol Seo, Bo-Hyung Cho, Sang-Woo Kang, Paul Jang
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Publication number: 20160285353Abstract: The present disclosure relates generally to a switch driving circuit and power factor correction circuit having the same, and more particularly, to a technology to provide a negative offset using Zener diodes to prevent malfunctions in driving a switch. The switch driving circuit to operate a switch implemented with a Field Effect Transistor (FET) includes a first Zener diode connected to a control input end of the switch; a capacitor connected in parallel with the first Zener diode; and second and third Zener diodes for providing a negative offset to fix a voltage applied between the gate and source of the switch to a negative value.Type: ApplicationFiled: December 10, 2015Publication date: September 29, 2016Applicants: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Jin Han KIM, Han Sol SEO, Bo-Hyung CHO, Sang-Woo KANG, Paul JANG
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Publication number: 20160268950Abstract: A motor driving apparatus includes a rectifying circuit to rectify an AC power supplied from an external AC power source, one pair of film capacitors to output a DC voltage and a neutral point voltage by removing a ripple of a voltage rectified by the AC-DC conversion unit, a 3-level inverter to supply a driving current to a motor using the DC voltage applied from the DC link unit, and a control module to control the 3-level inverter. The control module includes a motor speed control module to control the rotation of the motor, a DC voltage control module to stabilize the DC voltage, a neutral point voltage control module to stabilize the neutral point voltage, and a stabilizing voltage limiting module to control the DC voltage control module and the neutral point voltage control module according to an output of the motor speed control module.Type: ApplicationFiled: March 14, 2016Publication date: September 15, 2016Inventors: Je Hyung Cho, Seung-Ki Sul, Se Hwa Choe, Han Sol Seo
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Publication number: 20160268951Abstract: A motor driving apparatus includes an AC-DC conversion unit configured to rectify an AC power supplied from an external AC power source, a DC link unit configured to stabilize a voltage rectified by the AC-DC conversion unit, and a DC-AC conversion unit configured to supply the AC power to a motor using the DC voltage from the DC link unit. The DC link unit may include one pair of film capacitors configured to remove a ripple of the rectified voltage, and the DC-AC conversion unit may include a 3-level inverter receiving the DC voltage from the one pair of film capacitors to supply the AC power to the motor.Type: ApplicationFiled: March 14, 2016Publication date: September 15, 2016Inventors: Je Hyung Cho, Sun Jin Kim, Han Sol Seo
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Patent number: 9419387Abstract: A plug for a DC appliance includes an input unit including anode and cathode terminals, an output unit including anode and cathode terminals to allow a DC current input through the input unit to be output to an electric device, a connection unit to interconnect the input unit and the output unit, a rectifier unit coupled between anode and cathode terminals of the input unit to rectify the input DC current, an inductor unit connected in series to the rectifier unit so that an internal current of the plug is gradually increased in response to an increase of the input DC current, and a condenser unit connected in series to the inductor unit, which is charged with voltage in response to a current passing through the inductor unit, and discharges the charged voltage to the output unit when the input of the DC current from the input unit is interrupted.Type: GrantFiled: January 11, 2012Date of Patent: August 16, 2016Assignees: SAMSUNG ELECTRONICS CO., LTD., SUNGKYUNKWAN UNIVERSITYInventors: Hyun Cheol Jin, Han Sol Seo, Hyun Soo Park, Byoung Kuk Lee, Joon Young Jeon
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Publication number: 20160190914Abstract: A power factor correction circuit and an electronic product including the same are disclosed. This technology configures a bridgeless circuit with no rectifier diode by using an additional switch, eliminating conduction loss due to the diode and reducing common mode EMI noise of the power factor correction circuit. A power factor correction circuit includes at least one inductor directly connected to an AC input stage, an output capacitor to smooth the output voltage, first switching elements to control current to store magnetic energy in the inductor, and a second switching element to maintain a substantially constant voltage between a ground voltage of an AC input stage and a ground voltage of an output stage.Type: ApplicationFiled: December 28, 2015Publication date: June 30, 2016Inventors: Jin-Han KIM, Han Sol SEO, Bo Hyung CHO, Paul JANG, Sang Woo KANG
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Publication number: 20160190964Abstract: Disclosed herein are a motor driving apparatus and a controlling method thereof. The motor driving apparatus includes a motor having a rotor including a permanent magnet, and a stator, an inverter to supply a driving power to the motor, and a control unit to estimate a parameter using a startup estimation when a rotation speed of the rotor is less than a preset startup speed, to estimate the parameter using a driving estimation with compensating for a dead time when the rotation speed of the rotor is equal to or greater than the preset startup speed and a torque of the rotor is equal to or less than a preset driving torque, and to estimate the parameter using the driving estimation without the dead time compensation when the rotation speed of the rotor is equal to or greater than the preset startup speed and the torque of the rotor exceeds the preset driving torque.Type: ApplicationFiled: December 30, 2015Publication date: June 30, 2016Inventors: Jong-Hyun Shin, Jin Woong Kim, Han Sol Seo, Jung-Ik Ha
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Publication number: 20150381095Abstract: An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Applicants: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Young Jae PARK, Han Sol Seo, Bodrov Alexey, Seung Ki Sul, Hyun-Sam Jung, Seung-Jun Chee