Patents by Inventor Joon-Seok Lee
Joon-Seok 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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Publication number: 20240150801Abstract: The present invention relates to a Corynebacterium glutamicum mutant strain having increased L-citrulline productivity, and a method of producing L-citrulline using the same. The Corynebacterium glutamicum mutant strain is capable of producing L-citrulline in high yield and high concentration while inhibiting the production of by-products, because the activity of the protein that is expressed by the NCgl2657 gene therein has been weakened or inactivated.Type: ApplicationFiled: January 19, 2022Publication date: May 9, 2024Applicant: DAESANG CORPORATIONInventors: Moon Jeong KIM, Dong Seok LEE, Sun Jun YOON, Seok Hyun PARK, Joon Hyun PARK
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Patent number: 11970558Abstract: A method of recovering a solvent including: supplying polymerization reactants including one or more monomers and a solvent to a reactor to obtain a polymer solution; supplying a stream including the polymer solution to a separator to separate an upper discharge stream including the solvent, wherein the solvent is in a gaseous phase, and a lower discharge stream including the polymer solution; heating a divergence stream including a part of the lower discharge stream from the separator by a heating device and refluxing the divergence stream to the separator; supplying a residue stream including a remainder of the lower discharge stream from the separator to a steam stripping process unit; and adjusting a vapor mass fraction of the divergence stream which is refluxed to the separator with a pressure adjustment valve after being heated by the heating device.Type: GrantFiled: January 15, 2021Date of Patent: April 30, 2024Assignee: LG CHEM, LTD.Inventors: Suk Yung Oh, Jun Seok Ko, Kwan Sik Kim, Joon Ho Shin, Byeong Gil Lyu, Se Kyung Lee
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Patent number: 11951207Abstract: The present invention provides a stable liquid pharmaceutical formulation containing: an antibody or its antigen-binding fragment; a surfactant; a sugar or its derivative; and a buffer. The stable liquid pharmaceutical formulation according to the present invention has low viscosity while containing a high content of the antibody, has excellent long-term storage stability based on excellent stability under accelerated conditions and severe conditions, and may be administered subcutaneously.Type: GrantFiled: June 28, 2017Date of Patent: April 9, 2024Assignee: Celltrion Inc.Inventors: Joon Won Lee, Won Yong Han, Su Jung Kim, Jun Seok Oh, So Young Kim, Su Hyeon Hong, Yeon Kyeong Shin
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Patent number: 11800976Abstract: A method for an image-based eye disease diagnosis according to an embodiment includes receiving a fundus image, determining whether the fundus image is a deep diagnosis target using a deep diagnosis target classification model, and determining whether the fundus image has a disease through a preset deep diagnosis process when a result of the determination shows that the fundus image is the deep diagnosis target, or determining whether the fundus image has a disease by applying the fundus image to a general diagnosis model when the result of the determination shows that the fundus image is not the deep diagnosis target.Type: GrantFiled: March 12, 2021Date of Patent: October 31, 2023Assignees: SAMSUNG SDS CO., LTD., SAMSUNG MEDICAL CENTERInventors: Su Jeong Song, Ji Eun Song, Joon Ho Lee, Joon Seok Lee, Soo Ah Cho
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Publication number: 20230341344Abstract: Provided are a chemiresistive sensor module, a wireless electronic device, and an IoT system. The chemiresistive sensor module includes a chemiresistive sensor including a composite material of a three-dimensional metal-organic framework and a two-dimensional metal-organic framework, a measuring unit for measuring a data on change in electrical resistance detected from the chemiresistive sensor and electrically connected to the chemiresistive sensor, and a communication unit for transmitting the data on change in electrical resistance to an external device.Type: ApplicationFiled: April 21, 2023Publication date: October 26, 2023Inventors: Seon-Jin CHOI, Hoi Ri MOON, Jihan KIM, Joon-Seok LEE, Minhyuk KIM, Seoyeon SEONG, Mingyu JEON, Honghui KIM
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Patent number: 11764777Abstract: The present invention relates to a new type of current driving circuit, which has high linearity during low current driving, comprising: a voltage-current conversion unit for converting an input voltage into a current; a digital analog converter (DAC) connected to an output terminal of the voltage-current conversion unit and for generating and outputting a voltage corresponding to an applied digital code; a field effect transistor having a first electrode connected to a load and a second electrode connected to a node connected to a resistor, and for allowing a current to flow to the load in response to a voltage applied to a gate; an amplifier for receiving the voltage output from the digital analog converter and a voltage generated by the resistor, generating a voltage for controlling such that a current flows from the field effect transistor, and applying same to the gate; a current supply source for supplying to the first electrode a current required for operating the field effect transistor in a saturatioType: GrantFiled: February 22, 2021Date of Patent: September 19, 2023Assignee: DONGWOON ANATECH CO., LTD.Inventors: Joon Seok Lee, Yu Hwang Lee, Jin Park
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Publication number: 20230288361Abstract: Provided are a chemiresistor and a method of manufacturing the same, a chemiresistive sensor, and a device. The chemiresistor includes a conductive porous nanocomposite of a three-dimensional metal-organic framework and a two-dimensional metal-organic framework, wherein the two-dimensional metal-organic framework is chemically bound to the three-dimensional metal-organic framework on a surface of the three-dimensional metal-organic framework, and the three-dimensional metal-organic framework and the two-dimensional metal-organic framework form a core-shell structure in the conductive porous nanocomposite.Type: ApplicationFiled: March 10, 2023Publication date: September 14, 2023Inventors: Hoi Ri MOON, Jae Hwa LEE, Sujee CHO, Seoyeon SEONG, Minhyuk KIM, Jihan KIM, Ohmin KWON, Mingyu JEON, IL Doo KIM, Chungseong PARK, Joon-Seok LEE, Seon-Jin CHOI
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Publication number: 20230188061Abstract: The present invention relates to a haptic feedback system, and in particular to a device and method for rapidly removing residual vibration in a linear resonant actuator, the method driving the linear resonant actuator by applying a resonant frequency thereto to implement a haptic function and applying a braking signal for removing the residual vibration after the driving of the linear resonant actuator, wherein the braking signal is a driving wave for generating the same vibration waveform as a residual vibration waveform of the linear resonant actuator, and is applied to the linear resonant actuator at a point of time when a BEMF signal of the linear resonant actuator crosses a zero point, the braking signal being applied in an opposite direction in which it is possible to cancel the residual vibration waveform of the linear resonant actuator.Type: ApplicationFiled: February 22, 2021Publication date: June 15, 2023Inventors: Joon Seok LEE, Yu Hwang LEE, Jin PARK
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Patent number: 11639917Abstract: The present invention relates to a dianhydride analysis method, which can reliably analyze a dianhydride having high reactivity and low solubility. In addition, the present invention can analyze the structure of impurities by separating the impurities on the basis of having a similar retention time in HPLC analysis, and can analyze the purity of the dianhydride with or without chromophores.Type: GrantFiled: September 23, 2019Date of Patent: May 2, 2023Inventors: Joon Seok Lee, So Yeon Kim, Bumgyu Choi, Byoung Hyoun Kim
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Patent number: 11615636Abstract: An apparatus for document recognition according to an embodiment includes a document type analyzer that analyzes a type of a recognition target document based on document feature vector extracted from one or more partial images obtained by color space conversion of one or more partial regions of the recognition target document, and an information extractor that extracts value information from one or more information search images organized in a grid form based on a position of key information of the recognition target document.Type: GrantFiled: January 14, 2021Date of Patent: March 28, 2023Assignee: SAMSUNG SDS CO., LTD.Inventors: Hyo Seob Song, Jeong Yoon, Joon Seok Lee, Soo Ah Cho
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Publication number: 20220378378Abstract: An apparatus for predicting a cardiovascular risk factor according to an embodiment includes a target cardiovascular risk factor predicting module for producing an initial prediction value for a target cardiovascular risk factor from a fundus image, at least one related cardiovascular risk factor predicting module for producing respective prediction values for at least one related cardiovascular risk factor from the fundus image, and a combining module for producing a final prediction value for the target cardiovascular risk factor on the basis of the initial prediction value for the target cardiovascular risk factor and the respective prediction values for the at least one related cardiovascular risk factor.Type: ApplicationFiled: August 21, 2020Publication date: December 1, 2022Inventors: Soo Ah CHO, Joon Ho LEE, Joon Seok LEE, Ji Eun SONG, Min Young LEE, Su Jeong SONG
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Patent number: 11427514Abstract: The present invention relates to a controlled-release fertilizer, including: a photodegradable capsule including a binder resin containing a polyolefin and an ethylene vinyl acetate copolymer, and a photocatalytic composite in which a (co)polymer including at least one repeating unit selected from the group consisting of an ethylene repeating unit and a vinyl acetate repeating unit is bonded to the surface or inside of agglomerates of inorganic fine particles; and a fertilizer contained in a space surrounded by the photodegradable capsule.Type: GrantFiled: December 13, 2018Date of Patent: August 30, 2022Assignees: LG CHEM, LTD., FARMHANNONG CO., LTD.Inventors: Chanjoong Kim, Joon Seok Lee, Yil Jang, Sangryeo Lee, Ji Yeon Kim, Jae Hoon Choe
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Publication number: 20220263504Abstract: The present invention relates to a new type of current driving circuit, which has high linearity during low current driving, comprising: a voltage-current conversion unit for converting an input voltage into a current; a digital analog converter (DAC) connected to an output terminal of the voltage-current conversion unit and for generating and outputting a voltage corresponding to an applied digital code; a field effect transistor having a first electrode connected to a load and a second electrode connected to a node connected to a resistor, and for allowing a current to flow to the load in response to a voltage applied to a gate; an amplifier for receiving the voltage output from the digital analog converter and a voltage generated by the resistor, generating a voltage for controlling such that a current flows from the field effect transistor, and applying same to the gate; a current supply source for supplying to the first electrode a current required for operating the field effect transistor in a saturatioType: ApplicationFiled: February 22, 2021Publication date: August 18, 2022Applicant: DONGWOON ANATECH CO., LTD.Inventors: Joon Seok LEE, Yu Hwang LEE, Jin PARK
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Patent number: 11390531Abstract: The present invention relates to a mesoporous film structure having ultra-large pores therein and a method of manufacturing the same, which includes, The manufacturing method includes a pretreatment step of pretreating a support so that micelles and silica are deposited on the support, a micelle formation step of mixing a cationic surfactant and an anionic co-surfactant for forming the micelles at a predetermined ratio in a support-carried water tank prepared in the pretreatment step, followed by heating, thus forming enlarged micelles on the support through magnetic bonding of the cationic surfactant and the anionic co-surfactant, a silica deposition step of supplying a silica precursor solution to the water tank, followed by heating, thus depositing silica on the support after the micelle formation step, and a washing step of washing the support so that residual materials (containing the micelles) are removed after the silica deposition step.Type: GrantFiled: June 9, 2020Date of Patent: July 19, 2022Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Joon Seok Lee, In Ae Lee, Hui Jin Jung, Seok Lee, Deok Ha Woo
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Patent number: 11377395Abstract: The present invention relates to a controlled-release type fertilizer with remarkably decreased floating property, comprising a granular fertilizer core; a coating layer (shell) formed on the surface of the granular fertilizer core, and comprising olefin-based resin; and additives attached on the coating layer, and comprising polyoxyethylene alkyl(-aryl)ether.Type: GrantFiled: September 13, 2018Date of Patent: July 5, 2022Assignee: LG CHEM, LTD.Inventors: Mihee Kim, Hyo Sook Joo, Eun Kyoung Park, Hyeon Choi, Ki Youl Yoon, Joon Seok Lee
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Patent number: 11370719Abstract: The present invention relates to a controlled-release type fertilizer with outstandingly decreased floating property, comprising a granular fertilize core; a coating layer (shell) formed on the surface of the granular fertilizer core, and comprising olefin-based resin; and additives attached on the coating layer, and comprising ethylene oxide-propylene oxide-ethylene oxide(EO-PO-EO) or propylene oxide-ethylene oxide-propylene oxide(PO-EO-PO) tri-block copolymer.Type: GrantFiled: September 13, 2018Date of Patent: June 28, 2022Assignee: LG CHEM, LTD.Inventors: Mihee Kim, Hyosook Joo, Eun Kyoung Park, Hyeon Choi, Kiyoul Yoon, Joon Seok Lee
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Patent number: 11366045Abstract: The present disclosure relates to an apparatus and a method for analysis of a multi-layer adhesive film and provides the apparatus comprising a specimen tray unit; a blade unit; a liquid nitrogen supply unit; and a driving unit, and the method comprising a specimen fixing step; a specimen cooling step; a specimen pre-collection step; a specimen collection step; and a blade separation step.Type: GrantFiled: July 10, 2020Date of Patent: June 21, 2022Assignee: LG CHEM, LTD.Inventors: So Yeon Kim, Rin Jang, Joon Seok Lee, Byoung Hyoun Kim, Bumgyu Choi, Su Youn Han
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Patent number: 11332413Abstract: The present disclosure relates to a controlled-release fertilizer and, more particularly, to a controlled-release fertilizer including: a photodegradable capsule including a binder resin containing a polyolefin and an ethylene vinyl acetate copolymer; and a photocatalytic composite in which a (meth)acrylate compound containing an alkylene glycol repeating unit having 1 to 10 carbon atoms is bonded to the surface or inside of aggregates of inorganic fine particles, and a fertilizer contained in a space surrounded by the photodegradable capsule.Type: GrantFiled: March 18, 2019Date of Patent: May 17, 2022Assignees: LG Chem, Ltd., Farmhannong Co., Ltd.Inventors: Chanjoong Kim, Sangryeo Lee, Joon Seok Lee, Yil Jang, Ji Yeon Kim, Jae Hoon Choe
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Patent number: 11327059Abstract: The present invention relates to a dianhydride analysis method. The method can stably analyze a dianhydride which has high reactivity and low solubility. Furthermore, the method can minimize the problem that a reaction product disturbs an analysis result, thereby improving accuracy of the analysis result.Type: GrantFiled: October 4, 2019Date of Patent: May 10, 2022Inventors: So Yeon Kim, Joon Seok Lee, Bumgyu Choi, Byoung Hyoun Kim
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Patent number: 11320425Abstract: Disclosed is a diagnostic kit for quickly diagnosing a target material with high sensitivity using nanoparticles that absorb infrared light and emit infrared light, in which the nanoparticles are maintained in particle size and have enhanced emission intensity.Type: GrantFiled: March 6, 2018Date of Patent: May 3, 2022Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Joon Seok Lee, Seok Lee, Man Ho Choi, Hee Soo Pyo, Seung Ki Kim, Jae Young Kim