Abstract: Disclosed are a holographic writing method and apparatus capable of re-writing (updating) holographic information and quickly writing the holographic information with high efficiency. In an embodiment, a holographic writing method for writing holographic information by emitting a beam at a holographic recording medium containing a photo-responsable polymer material having photoisomerization characteristics that change a molecular structure thereof by absorbing light energy, writes the holographic information by using a writing wavelength different from a maximum absorption wavelength in a light absorption spectrum of photoisomer molecule structures of the holographic recording medium. The maximum absorption wavelength is a wavelength at which light absorption rate is maximum in the light absorption spectrum.
Type:
Grant
Filed:
November 8, 2019
Date of Patent:
May 23, 2023
Assignees:
KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Hak-Rin Kim, Jae-Won Ka, Mi-Hye Yi, Ae-Jin Yeon, Kyung-Il Joo
Abstract: The present disclosure relates to a method for extracting chitin nanocrystals through electron beam irradiation comprising the steps of: (i) irradiating a chitin-based solid material with an electron beam; (ii) washing the chitin-based solid material subjected to electron beam irradiation; (iii) adding a basic solution to the washed chitin-based solid material; (iv) high-pressure homogenizing the chitin-based solid material dispersed in an aqueous system to which the basic solution is added, to prepare a suspension containing chitin nanocrystals.
Type:
Grant
Filed:
August 21, 2020
Date of Patent:
May 16, 2023
Assignee:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Abstract: The present disclosure is to provide a catalyst for olefin production which is eco-friendly and has excellent conversion rates and selectivity and a preparation method thereof, and the catalyst for olefin production according to the present disclosure is one in which cobalt and zinc are supported with alumina. Particularly, the catalyst according to the present disclosure uses an amount of platinum that is about 400 times smaller than that of the conventional catalysts, and has high conversion rates and selectivity under conditions in which continuous reaction-regeneration process is possible without an additional hydrogen reduction process.
Type:
Application
Filed:
December 24, 2020
Publication date:
April 27, 2023
Applicants:
SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Daesung PARK, Hawon PARK, Changyeol SONG, Yong Ki PARK, Won Choon CHOI, Ung Gi HONG, Hae Bin SHIN, Miyoung LEE, Deuk Soo PARK
Abstract: Provided are a bacterial nanocellulose transparent film, a manufacturing method thereof, and a packaging material including a food packaging material or an electronic product packaging material using the same capable of newly manufacturing a bacterial nanocellulose transparent film with an oxygen barrier property, a moisture barrier property, or a UV barrier property by performing electron beam irradiation and a film process on bacterial cellulose.
Type:
Application
Filed:
September 23, 2022
Publication date:
April 13, 2023
Applicant:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Jihoon SHIN, Sae Hume PARK, Jeong suk YUK, Hyun Ho LEE
Abstract: The present invention relates to a novel indazole derivative, and a use thereof, wherein the indazole derivative has excellent TRIB2 or YAP inhibitory activity, and can be effectively used as a pharmaceutical composition for preventing or treating cancer, narcolepsy, and fasciitis.
Type:
Application
Filed:
December 16, 2020
Publication date:
April 13, 2023
Applicant:
KOREA RESEARCH INSTITUTE OFCHEMICAL TECHNOLOGY
Abstract: The present invention relates to a composition for detecting nucleic acid comprising duplex molecular beacon and graphene oxide and a colorimetric signal enhancement method of detecting nucleic acid using the same. According to the composition, kit and method for detecting nucleic acid of the present invention, a complex can be formed by adsorbing a single strand having a DNAzyme sequence dissociated from the conjugate of a duplex molecular beacon and a target nucleic acid to the graphene oxide surface, and separated, and a colorimetric signal amplified therefrom can be induced, so that a very low concentration of target nucleic acid can be detected with high efficiency and the target nucleic acid can be detected quickly and easily in seconds. Therefore, a new colorimetric target nucleic acid detection system capable of point of care testing (POCT) can be provided.
Type:
Grant
Filed:
September 22, 2020
Date of Patent:
April 11, 2023
Assignee:
Korea Research Institute of Chemical Technology
Inventors:
Jieon Lee, Woo-keun Kim, Sangwoo Lee, Seokjoo Yoon
Abstract: The present disclosure relates to a carbazole-based anion exchange material, a preparation method therefor and use thereof, and more particularly, to an anion exchange material used in membranes for water electrolysis, redox flow batteries, fuel cells, carbon dioxide reduction, electrochemical ammonia production and decomposition, electrodialysis (ED), reverse electrodialysis (RED) or capacitive deionization (CDI), a separator comprising the same, a preparation method therefor and use thereof. According to the present disclosure, it is possible to prepare a separation membrane with improved mechanical and chemical stability and durability by remarkably improving the molecular weight together with solubility in solvent by providing the anion exchange material in which all bonds between monomers in the main chain are C—C bonds based on the carbazole-based material with high stability.
Type:
Application
Filed:
November 19, 2020
Publication date:
April 6, 2023
Applicant:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Jang Yong LEE, Seokhwan YANG, Sang Hun SHIN
Abstract: According to an embodiment of the present invention, provided is a process for polymerizing molecular weight—adjustable polymer, comprising: a reactant supply step of supplying a gaseous monomer, a surfactant, and an initiator; a polymerization reaction step of performing a polymerization reaction in which the monomer, the surfactant, and the initiator participate; and a product discharging step of discharging the polymer compound produced by the polymerization reaction, wherein the flow rate of the supplied initiator is inversely proportional to the molecular weight of the polymer compound, and the molecular weight of the polymer compound produced by the polymerization reaction is adjusted by controlling the flow rate of the initiator.
Type:
Application
Filed:
February 22, 2021
Publication date:
March 30, 2023
Applicant:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Hong Suk KANG, In Joon PARK, Shin Hong YOOK, Eun-Ho SOHN, Sang Goo LEE, Soo Bok LEE, Won Wook SO
Abstract: The present invention relates to a fatty liver and liver fibrosis evaluation system based on impedance. The fatty liver and liver fibrosis evaluation system based on impedance provided in one aspect of the present invention uses 3-dimensional liver microtissues so that the fatty liver formation and the stiffness changes resulted from liver fibrosis induced by a test drug can be analyzed with non-invasive and highly reproducible manner.
Type:
Application
Filed:
November 28, 2022
Publication date:
March 23, 2023
Applicant:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Abstract: Proposed is a catalyst complex having high activity for carbon dioxide conversion reaction that converts carbon dioxide to useful compounds through reaction of carbon dioxide and hydrocarbon containing at least one hydroxyl group, and a carbon dioxide conversion process using the same, wherein the catalyst complex includes, as an active metal in the catalyst complex, at least one of noble metals and at least one of transition metals other than noble metals, thereby having high activity for the carbon dioxide conversion reaction.
Type:
Grant
Filed:
November 13, 2020
Date of Patent:
March 21, 2023
Assignee:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Young Kyu Hwang, Jaesung Kwak, Maeum Lee, Anil Haribhau Valekar, Kyung Ryul Oh, Do Young Hong, A Reum Byeun, Dong Won Hwang, Joungmo Cho
Abstract: Proposed is a high-yield simultaneous conversion method for a hydrogen source and a carbon dioxide source. The method significantly increases a yield of a formate through conversion of carbon dioxide. To this end, a carbon dioxide source and a hydrocarbon containing one or more hydroxy groups undergo a simultaneous conversion reaction in the presence of a solvent containing one or more alcohols and having a pH of 10 to 14.
Type:
Application
Filed:
August 10, 2022
Publication date:
March 9, 2023
Applicant:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Young Kyu HWANG, Changho YOO, Dong Won HWANG, Kyung-Ryul OH, Do Young HONG, Maeum LEE
Abstract: The present disclosure provides a preparing method for 5-alkoxymethylfurfural, including steps of (a) preparing fructose, (b) mixing the fructose, an organic acid catalyst, and an organic solvent, thereby preparing mixing solution, and (c) heating the mixing solution, thereby preparing 5-alkoxymethylfurfural. Therefore, 5-alkoxymethylfurfural may be effectively prepared without by-products from fructose.
Type:
Grant
Filed:
February 4, 2021
Date of Patent:
March 7, 2023
Assignee:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Dong Won Hwang, Young Kyu Hwang, Ma Eum Lee, Pravin Pandharinath Upare, Do Young Hong
Abstract: Provided is a nanoplasmonic sensor and a kit for biomolecule analysis, and a method of analyzing a biomolecule using the same. The method includes: providing the nanoplasmonic sensor including a dielectric grating extending in one direction, and a metal structure disposed to cover an upper surface and a side surface of the dielectric grating and have at least one bent portion; immobilizing a first probe molecule on a surface of the metal structure; hybridizing an analyte with the first probe molecule by introducing the analyte having a base sequence complementary to the first probe molecule; binding a second probe molecule that is hybridized with the first probe molecule to the analyte; binding an enzyme to the second probe molecule; introducing a substrate that reacts with the enzyme to produce a precipitate by an enzymatic reaction; and measuring localized surface plasmon resonance in the metal structure.
Type:
Grant
Filed:
December 11, 2018
Date of Patent:
February 28, 2023
Assignees:
KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE, FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Tae Geol Lee, Hee Kyung Na, Jung Sub Wi, Jong G. OK
Abstract: The present invention provides a thiophene carboxamide compound of the following General Formula (I), which is a novel fluorine-substituted biphenyl carboxamide-based compound, and provides a useful compound, as an agricultural and horticultural plant disease control agent, exhibiting an excellent control effect at a low dose. wherein, R, R1, R2, R3, Xm, and Y are each as defined in the specification.
Type:
Grant
Filed:
October 7, 2019
Date of Patent:
February 14, 2023
Assignees:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, FARMHANNONG CO., LTD
Inventors:
Jae Wook Ryu, Hyun Suk Yeom, Myeong Su Shin, In Young Oh, Ki-Ju Park, Min-Young Song, Do-Hyoung Kim, Han-Young Lee, Kyung-Jin Jun
Abstract: The present invention relates to a method of directly preparing a dicarbamate compound from a diamine compound, and more particularly to a method of directly preparing a dicarbamate compound by reacting a diamine compound with an alcohol compound in the presence of a mixed gas of carbon monoxide (CO) and oxygen (O2) using a Pd/MOx catalyst configured such that a palladium (Pd) active metal is supported on a metal oxide or metalloid oxide carrier.
Type:
Grant
Filed:
November 19, 2018
Date of Patent:
January 31, 2023
Assignee:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Ji Hoon Park, Tae Sun Chang, Young Woo You, Iljeong Heo, Jin Hee Lee, Seul Gi Han, Kwan Yong Jeong
Abstract: Proposed is a two-pot-two-step simultaneous conversion system for carbon dioxide and a hydrocarbon containing at least one hydroxy group and a method thereof. The system integrates a process of producing a metal salt that is a dehydrogenated form of the hydrocarbon, hydrogen, and water by reacting a hydrocarbon containing at least one hydroxy group in the presence of water and a metal oxalate, and a process of converting carbon dioxide or carbon dioxide-derived carbonate into formate by hydrogenation, thereby increasing energy efficiency while maintaining a higher hydrocarbon conversion rate and a higher carbon dioxide conversion rate than the one-pot conversion system for hydrocarbon and carbon dioxide.
Type:
Application
Filed:
July 6, 2022
Publication date:
January 26, 2023
Applicant:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Young Kyu HWANG, Changho YOO, Dong Won HWANG, Do-Young HONG, Jaedeuk PARK, In Hyoup SONG, Maeum LEE, Kyung-Ryul OH, Anil Haribhau VALEKAR
Abstract: A spirobifluorene compound and a perovskite solar cell including the spirobifluorene compound are disclosed. More particularly, a spirobifluorene compound which can be used as a hole transport material of a perovskite solar cell is disclosed. A perovskite solar cell including the spirobifluorene compound as a hole transport material is further disclosed.
Type:
Grant
Filed:
November 8, 2017
Date of Patent:
January 24, 2023
Assignee:
KOREA RESEARCH INSTITUTE OF CHECMICAL TECHNOLOGY
Inventors:
Jaemin Lee, Hye Jin Na, Nam Joong Jeon, Jang Won Seo, Jun Hong Noh, Tae Youl Yang, Sang Il Seok
Abstract: Pyrrolidine carboxamido derivatives, optical isomers thereof, and salts thereof that are able to prevent, improve, and/or treat inflammatory conditions, including inflammatory bowel disease, and methods for preparing and using the same are provided.
Type:
Application
Filed:
August 3, 2022
Publication date:
January 19, 2023
Applicants:
Research & Business Foundation Sungkyunkwan University, Korea Research Institute of Chemical Technology
Inventors:
Kwangho LEE, Sang Dal Rhee, Gildon Choi, Imran Ali, Chong Hak Chae, Moon Kook Jeon, Seok Hee Park, Youn Sook Lee
Abstract: The present invention relates to a composition for preventing or treating cancer, containing a novel trifluoromethyl phenyl pyrazole derivative as an active ingredient, and, more specifically, to a composition for preventing, alleviating or treating cancer and a radiosensitizer composition for treating cancer with radiotherapy, which contain, as an active ingredient, a novel sulfonamide derivative including N,N-dimethyl-N?-(3-(1-(4-(trifluoromethyl)phenyl)-1H-pyrazol-4-yl)phenyl)azanesulfonamide. Novel sulfonamide derivatives according to the present invention have an excellent apoptotic effect on cancer cells, and thus are usable as an effective anti-cancer agent, and reduce the radioresistance of cancer cells, and thus can be used as a radiosensitizer composition during cancer treatment.
Type:
Application
Filed:
September 24, 2020
Publication date:
January 5, 2023
Applicants:
KOREA INSTITUTE OF RADIOLOGICAL & MEDICAL SCIENCES, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Jae-Sung KIM, Ah Young KIM, Minsung KANG, Kwan-Young JEONG, Seokjun JO
Abstract: The present invention relates to a method for preparing ZSM-5 zeolite. The present invention can provide a method for preparing ZSM-5 zeolite comprising the steps of: preparing a first solution in a solution state by heating a mixture comprising a silica source, an alumina source, a neutralizing agent and a crystalline ZSM-5 nucleus; preparing a reaction mother liquid by mixing a second solution comprising salts into the first solution; and continuously crystallizing by continuously supplying the reaction mother liquid to a hydrothermal synthesis reactor, wherein formula [1] below is satisfied. 0.20?Wa/Wb?0.
Type:
Grant
Filed:
May 2, 2019
Date of Patent:
January 3, 2023
Assignee:
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
Inventors:
Na Young Kang, Yong Ki Park, Chang Hwan Kim, Yu Jin Lee