Patents by Inventor Chulhee Choi
Chulhee 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: 20240298190Abstract: The present disclosure relates to 5th generation (5G) or pre-5G communication systems supporting higher data transmission rates than 4th generation communication systems (e.g., Long-Term Evolution). A method to be performed by a repeater device includes receiving, from a base station in the wireless communication system, control information including configuration information indicating a repeater index list, receiving, from the base station, a downlink signal, identifying whether an index of the downlink signal is included in the repeater index list, based on identifying that the index of the downlink signal is included in the repeater index list, amplifying the downlink signal, and transmitting a repeater beamforming signal that is generated by applying a beamforming weight to the amplified downlink signal, and, based on identifying that the index of the downlink signal is not included in the repeater index list, amplifying the downlink signal and transmitting the amplified downlink signal.Type: ApplicationFiled: April 26, 2024Publication date: September 5, 2024Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dongwook CHOI, Jeewoong Kang, Eunyong Kim, Hyunkyu Yu, Chulhee Jang
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Publication number: 20240207360Abstract: The present invention provides a method for producing an exosome that transfers an active substance specifically to a target and the exosome produced by the same; a method for delivering the active substance to the target tissue using the exosome; a pharmaceutical composition for delivery of the active substance comprising the exosome as an active ingredient; and a composition for preparing the exosome comprising an expression vector wherein the target peptide is inserted into an extracellular portion of a transmembrane protein.Type: ApplicationFiled: January 12, 2024Publication date: June 27, 2024Applicants: ILIAS BIOLOGICS INC., ILIAS THERAPEUTICS, INC.Inventors: Chulhee CHOI, Nambin YIM, Hojun CHOI, Kyungsun CHOI, Seung-Wook RYU
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Publication number: 20240075100Abstract: The present invention relates to a method for the mass-production of exosome comprising a cargo protein, a vector for preparing the exosome, exosome including a cargo protein prepared by the method, and a method for loading the cargo protein to cytosol by using the exosome prepared thereby. According to the method for preparing an exosome comprising a cargo protein provided by the present invention, the exosome loaded with a cargo protein can be produced with a high yield, so that it can be used broadly in the treatment of disease using the exosome.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Applicant: ILIAS BIOLOGICS INC.Inventors: Chulhee Choi, Nambin Yim, Won Do Heo, Seung-Wook Ryu, Hojun Choi, Kyungsun Choi
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Patent number: 11872193Abstract: The present invention relates to a method for the mass-production of exosome comprising a cargo protein, a vector for preparing the exosome, exosome including a cargo protein prepared by the method, and a method for loading the cargo protein to cytosol by using the exosome prepared thereby. According to the method for preparing an exosome comprising a cargo protein provided by the present invention, the exosome loaded with a cargo protein can be produced with a high yield, so that it can be used broadly in the treatment of disease using the exosome.Type: GrantFiled: May 29, 2020Date of Patent: January 16, 2024Assignee: ILIAS BIOLOGICS INC.Inventors: Chulhee Choi, Nambin Yim, Won Do Heo, Seung-Wook Ryu, Hojun Choi, Kyungsun Choi
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Patent number: 11696939Abstract: The present invention is related to compositions containing extracellular vesicles (exosomes) and methods of using the same for increasing lifespan of fetus, viability of fetus, or viability of newborn, for treating inflammation in uterus and/or fetus, for delaying preterm birth, or for treating a condition related to inflammation in uterus and/or fetus, wherein the extracellular vesicles comprising a nuclear factor kappa beta (NF-?B) inhibitor and a photo-specific binding protein.Type: GrantFiled: December 30, 2020Date of Patent: July 11, 2023Assignees: ILIAS Biologics Inc., ILIAS Therapeutics, Inc.Inventors: Chulhee Choi, Kyungsun Choi, Ramkumar Menon
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Publication number: 20210299215Abstract: The present disclosure relates to methods for treating acute kidney injury using exosome containing NF-?B inhibitors. The present disclosure relates to methods for treating diseases induced by sepsis using exosome containing NF-?B inhibitor. The present disclosure also is related to methods for treating respiratory diseases, such as viral respiratory diseases, using exosome containing NF-?B inhibitor.Type: ApplicationFiled: April 11, 2021Publication date: September 30, 2021Applicant: Ilias Biologics Inc.Inventors: Chulhee Choi, Kyungsun Choi, Jae-Kwang Yoo
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Publication number: 20210275636Abstract: The present invention is related to compositions containing extracellular vesicles (exosomes) and methods of using the same for increasing lifespan of fetus, viability of fetus, or viability of newborn, for treating inflammation in uterus and/or fetus, for delaying preterm birth, or for treating a condition related to inflammation in uterus and/or fetus, wherein the extracellular vesicles comprising a nuclear factor kappa beta (NF-?B) inhibitor and a photo-specific binding protein.Type: ApplicationFiled: December 30, 2020Publication date: September 9, 2021Inventors: Chulhee CHOI, Kyungsun CHOI, Ramkumar MENON
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Publication number: 20200289614Abstract: The present invention relates to a method for the mass-production of exosome comprising a cargo protein, a vector for preparing the exosome, exosome including a cargo protein prepared by the method, and a method for loading the cargo protein to cytosol by using the exosome prepared thereby. According to the method for preparing an exosome comprising a cargo protein provided by the present invention, the exosome loaded with a cargo protein can be produced with a high yield, so that it can be used broadly in the treatment of disease using the exosome.Type: ApplicationFiled: May 29, 2020Publication date: September 17, 2020Applicant: ILIAS BIOLOGICS INC.Inventors: Chulhee CHOI, Nambin YIM, Won Do HEO, Seung-Wook RYU, Hojun CHOI, Kyungsun CHOI
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Patent number: 10702581Abstract: The present invention relates to a method for the mass-production of exosome comprising a cargo protein, a vector for preparing the exosome, exosome including a cargo protein prepared by the method, and a method for loading the cargo protein to cytosol by using the exosome prepared thereby. According to the method for preparing an exosome comprising a cargo protein provided by the present invention, the exosome loaded with a cargo protein can be produced with a high yield, so that it can be used broadly in the treatment of disease using the exosome.Type: GrantFiled: November 3, 2017Date of Patent: July 7, 2020Assignee: ILIAS BIOLOGICS INC.Inventors: Chulhee Choi, Nambin Yim, Won Do Heo, Seung-Wook Ryu, Hojun Choi, Kyungsun Choi
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Publication number: 20200206360Abstract: The present invention provides a method for producing an exosome that transfers an active substance specifically to a target and the exosome produced by the same; a method for delivering the active substance to the target tissue using the exosome; a pharmaceutical composition for delivery of the active substance comprising the exosome as an active ingredient; and a composition for preparing the exosome comprising an expression vector wherein the target peptide is inserted into an extracellular portion of a transmembrane protein.Type: ApplicationFiled: August 16, 2018Publication date: July 2, 2020Applicants: ILIAS BIOLOGICS INC., ILIAS THERAPEUTICS, INC.Inventors: Chulhee CHOI, Nambin YIM, Hojun CHOI, Kyungsun CHOI, Seung-Wook RYU
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Patent number: 10015032Abstract: A method of acquiring frequency hop timing synchronization includes a propagation delay time computation process of computing a minimum and maximum propagation delay times according to an error of a location of a satellite communication terminal, which is input by an operator of a ground satellite terminal, and a delay transmission process of transmitting a ranging signal after a certain time upon the transmission of the ranging signal through a ranging-dedicated hop group having a hop duration time that is set in consideration of the maximum propagation delay, the minimum propagation delay, a ranging time, and a timing error due to a positional change of a satellite, in order to avoid collisions between the ranging signal and other signals. The satellite communication terminal may receive a ranging signal that was transmitted by the satellite communication terminal and control a timing for determining whether synchronization is acquired and a timing for performing transmission.Type: GrantFiled: October 26, 2016Date of Patent: July 3, 2018Assignee: AGENCY FOR DEFENSE DEVELOPMENTInventors: Juhyung Lee, Byunggak Jo, Chulhee Choi, Dhongwoon Jang, Yeesoo Han
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Publication number: 20180117117Abstract: The present invention relates to a method for the mass-production of exosome comprising a cargo protein, a vector for preparing the exosome, exosome including a cargo protein prepared by the method, and a method for loading the cargo protein to cytosol by using the exosome prepared thereby. According to the method for preparing an exosome comprising a cargo protein provided by the present invention, the exosome loaded with a cargo protein can be produced with a high yield, so that it can be used broadly in the treatment of disease using the exosome.Type: ApplicationFiled: November 3, 2017Publication date: May 3, 2018Applicant: CELLEX LIFE SCIENCES, INCORPORATEDInventors: Chulhee CHOI, Nambin YIM, Won Do HEO, Seung-Wook RYU, Hojun CHOI, Kyungsun CHOI
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Publication number: 20170141939Abstract: A method of acquiring frequency hop timing synchronization includes a propagation delay time computation process of computing a minimum and maximum propagation delay times according to an error of a location of a satellite communication terminal, which is input by an operator of a ground satellite terminal, and a delay transmission process of transmitting a ranging signal after a certain time upon the transmission of the ranging signal through a ranging-dedicated hop group having a hop duration time that is set in consideration of the maximum propagation delay, the minimum propagation delay, a ranging time, and a timing error due to a positional change of a satellite, in order to avoid collisions between the ranging signal and other signals. The satellite communication terminal may receive a ranging signal that was transmitted by the satellite communication terminal and control a timing for determining whether synchronization is acquired and a timing for performing transmission.Type: ApplicationFiled: October 26, 2016Publication date: May 18, 2017Applicant: AGENCY FOR DEFENSE DEVELOPMENTInventors: Juhyung LEE, Byunggak JO, Chulhee CHOI, Dhongwoon JANG, Yeesoo HAN
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Patent number: 9393308Abstract: Disclosed herein are a nanopreparation having a micelle structure for diagnosis or treatment of cancer diseases, and a method of preparing the same, and more particularly, a nanopreparation having a micelle structure available for diagonosis or treatment of cancer diseases and a method for preparing the same, wherein the nanopreparation is prepared by encapsulating a photosensitizer by forming micelle with polymeric lipid DSPE-mPEG. The nanopreparation having the micelle structure according to the present invention has a size of 12 nm or less by encapsulating hypericin, which is a photosensitizer, by forming micelle with polymeric lipid DSPE-mPEG having a molecular weight of 1500 to 2500. Resultingly, the nanopreparation easily overcomes a blood-tumor barrier (BTB) and an interstitial fluid pressure and has light induced cytotoxicity efficiency that is about more than 2.5 times higher than that of the case where hypericin is used alone.Type: GrantFiled: June 26, 2014Date of Patent: July 19, 2016Assignee: Korea Advanced Institute of Science and TechnologyInventors: Chulhee Choi, Kyuha Chong, Jiho Park
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Publication number: 20150148428Abstract: Disclosed herein are a nanopreparation having a micelle structure for diagnosis or treatment of cancer diseases, and a method of preparing the same, and more particularly, a nanopreparation having a micelle structure available for diagonosis or treatment of cancer diseases and a method for preparing the same, wherein the nanopreparation is prepared by encapsulating a photosensitizer by forming micelle with polymeric lipid DSPE-mPEG. The nanopreparation having the micelle structure according to the present invention has a size of 12 nm or less by encapsulating hypericin, which is a photosensitizer, by forming micelle with polymeric lipid DSPE-mPEG having a molecular weight of 1500 to 2500. Resultingly, the nanopreparation easily overcomes a blood-tumor barrier (BTB) and an interstitial fluid pressure and has light induced cytotoxicity efficiency that is about more than 2.5 times higher than that of the case where hypericin is used alone.Type: ApplicationFiled: June 26, 2014Publication date: May 28, 2015Inventors: Chulhee Choi, Kyuha Chong, Jiho Park
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Patent number: 8483819Abstract: Disclosed herein is a modulator of vascular permeability using pulsed laser and a method for modulating vascular permeability using the same. More specifically, because the pulsed laser effectively induces vascular permeabilization, effectively delivers intravascular materials into tissues and minimizes insult to the tissues by the induced vascular permeabilization, and locally targets a subcutaneous tissue for noninvasive modulation due to its nonlinearity, it may be usefully used for modulation of permeability.Type: GrantFiled: May 21, 2010Date of Patent: July 9, 2013Assignee: Korea Advanced Institute of Science and TechnologyInventors: Chulhee Choi, Myunghwan Choi
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Patent number: 8285353Abstract: The present invention relates, in general, to a system for analyzing tissue perfusion using the concentration of indocyanine green and a method of measuring the perfusion rate using the system and, more particularly, to a system for measuring tissue perfusion by injecting indocyanine green into a living body, detecting variation in the concentration of indocyanine green with the passage of time, and analyzing the detected variation, and a method of measuring the perfusion rate using the system. The present invention provides a method of measuring perfusion in a living body, which enables accurate measurement for respective regions in a wide range from a perfusion rate decreased to less than 10% of normal perfusion to a perfusion rate increased to greater than normal perfusion using the above-described mechanism of ICG in a living body, which cannot be conducted using the conventional technology.Type: GrantFiled: July 11, 2007Date of Patent: October 9, 2012Assignee: Korea Advanced Institute of Science and TechnologyInventors: Chulhee Choi, Yujung Kang, Myunghwan Choi
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Publication number: 20110152744Abstract: Disclosed herein is a modulator of vascular permeability using pulsed laser and a method for modulating vascular permeability using the same. More specifically, because the pulsed laser effectively induces vascular permeabilization, effectively delivers intravascular materials into tissues and minimizes insult to the tissues by the induced vascular permeabilization, and locally targets a subcutaneous tissue for noninvasive modulation due to its nonlinearity, it may be usefully used for modulation of permeability.Type: ApplicationFiled: May 21, 2010Publication date: June 23, 2011Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chulhee CHOI, Myunghwan CHOI
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Publication number: 20100036217Abstract: The present invention relates, in general, to a system for analyzing tissue perfusion using the concentration of indocyanine green and a method of measuring the perfusion rate using the system and, more particularly, to a system for measuring tissue perfusion by injecting indocyanine green into a living body, detecting variation in the concentration of indocyanine green with the passage of time, and analyzing the detected variation, and a method of measuring the perfusion rate using the system. The present invention provides a method of measuring perfusion in a living body, which enables accurate measurement for respective regions in a wide range from a perfusion rate decreased to less than 10% of normal perfusion to a perfusion rate increased to greater than normal perfusion using the above-described mechanism of ICG in a living body, which cannot be conducted using the conventional technology.Type: ApplicationFiled: July 11, 2007Publication date: February 11, 2010Applicant: Korea Advanced Institute Of Science and TechnologyInventors: Chulhee Choi, Yujung Kang, Myunghwan Choi
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Publication number: 20080221421Abstract: The present invention relates to an apparatus for measuring the perfusion rate of legs. The measurement apparatus of the present invention includes a light leakage prevention unit including a light emitting device for radiating light having a certain wavelength onto a living body injected with Indocyanine Green (ICG), and a light leakage prevention housing formed to prevent transmission of external light. A data acquisition unit includes a band pass filter for passing therethrough only light, having a near infrared wavelength, in a fluorescence image emitted by the ICG and the light emitting device, and a Charge Coupled Device (CCD) camera for photographing a near infrared wavelength region. A data processing unit calculates a perfusion rate of the living body on a basis of data about the near infrared wavelength region through a data cable connected to the data acquisition unit. A data output unit outputs the perfusion rate calculated by the data processing unit.Type: ApplicationFiled: December 13, 2007Publication date: September 11, 2008Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chulhee CHOI, Yujung KANG, Myunghwan CHOI