Patents by Inventor Dong June Ahn
Dong June Ahn 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: 11912924Abstract: The present invention provides a composition for antifreezing including a gold (Au) nanostructure in which at least a portion thereof is concave, thereby it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization when cryopreservation of the cells, and maintain a texture of food even when using in the freezing of food.Type: GrantFiled: December 3, 2019Date of Patent: February 27, 2024Assignee: Korea University Research and Business FoundationInventors: Dong June Ahn, Sang Yup Lee, Yong Ho Cho
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Patent number: 11849720Abstract: The present invention provides a a nanostructure which includes: a core comprising one or more planes configured to come into planar contact with at least one plane of an ice crystal; and an oligopeptide which is conjugated to at least one plane of the core and comprises (Thr)n-, (Ala)n-, (Ser)n-, or (Gly)n-, wherein the nanostructure is a polyhedron-shaped nanostructure present in water in a colloidal form to control freezing, and n is an integer of 2 to 7.Type: GrantFiled: December 3, 2019Date of Patent: December 26, 2023Assignee: Korea University Research and Business FoundationInventors: Seungwoo Lee, Dong June Ahn, Dong Kwon Lim, Jae Won Lee, Sang Yup Lee
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Patent number: 11800864Abstract: The present invention provides a composition for inhibiting ice recrystallization, including: A nucleic acid structure comprising a scaffold nucleic acid folded at predetermined positions to form a plurality of strands, and a plurality of staple nucleic acids, wherein at least a portion thereof has a complementary sequence to at least a portion of the scaffold nucleic acid, thereby binding to the scaffold nucleic acid to form a double strand. Therefore, it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization upon cryopreservation of the cells, and maintain a texture of food even when using the composition in the freezing of food.Type: GrantFiled: December 3, 2019Date of Patent: October 31, 2023Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Korea University Research and Business Foundation, PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATIONInventors: Dong June Ahn, Ye Dam Lee, Do Nyun Kim, Chan Seok Lee, Sang Wook Wu, Su Hyun Park
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Publication number: 20230225310Abstract: The present invention relates to a composition for cryopreservation, comprising: a nucleic acid structure which comprises a scaffold nucleic acid folded at predetermined positions to form multiple strands, and a plurality of staple nucleic acids wherein at least a portion of a sequence thereof comprises a complementary sequence to that of the scaffold nucleic acid, which are bound to at least one of the strands of the scaffold nucleic acid to form a double strand; linkers coupled to at least one of single strands in the nucleic acid structure; and an anti-freezing peptide coupled to at least one of the linkers, so as to exhibit excellent freeze-protection effects, which in turn increase cell viability during cryopreservation of cells and tissues, while retaining original texture of food even when used for freezing the food.Type: ApplicationFiled: March 12, 2021Publication date: July 20, 2023Applicants: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Dong June AHN, Do Nyun KIM, Ye Dam LEE, Chan Seok LEE
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Patent number: 11492602Abstract: The present invention provides a gene including an M13 p5 expressing cassette, which includes a promoter, a ribosome binding site (RBS) and a protein 5 (p5) coding region, wherein at least one base of sequences between the RBS and the p5 coding region is mutated. Using this gene may increase production of single-stranded DNA.Type: GrantFiled: December 3, 2019Date of Patent: November 8, 2022Assignee: Korea University Research and Business FoundationInventors: Min Kyu Oh, Dong June Ahn, Seungwoo Lee, Bo Young Lee, Jun Min Lee, Jae Won Lee
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Publication number: 20210378234Abstract: The present invention provides a composition for freezing control, a composition for freezing a cell, and a composition for freezing a food, which include a compound in which 2 to 5 amino acids, for example, 2, 3, 4, or 5 amino acids are connected to fluorenylmethyloxycarbony (Fmoc) through peptide bonding.Type: ApplicationFiled: December 12, 2019Publication date: December 9, 2021Applicants: Korea University Research and Business Foundation, GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Eun Ji LEE, Chang Whan LEE, Dong June AHN, In Hye KIM, Ha Yeon KIM, Ye Dam LEE
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Patent number: 11105727Abstract: The present invention provides a device for measuring a particle size at a low temperature, specifically, which includes a refrigerant tank containing a refrigerant; a heat conduction plate thermally connected to the refrigerant tank; and a nanoantenna located on the heat conduction plate, thereby it is possible to determine a degree of light transmission to the sample to be measured located on an upper portion of the nanoantenna, and predict the physical properties of the sample.Type: GrantFiled: December 3, 2019Date of Patent: August 31, 2021Assignee: Korea University Research and Business FoundationInventors: Dong June Ahn, Myung Ki Kim, Ye Dam Lee, Nu Ri Park
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Patent number: 11041105Abstract: The present invention provides a composition comprising branched polyglycerol for controlling freezing, more specifically, the composition has a number average molecular weight of 1,000 to 20,000 g/mol and a branching of 0.1 to 1, and may control enhancement or inhibition of ice recrystallization by adjusting a content of polyglycerol.Type: GrantFiled: December 3, 2019Date of Patent: June 22, 2021Assignees: KOREA UNIVERSITY RESEARCH AND, BUSINESS FOUNDATION, Please check the appropriate assignee category or categories (will not be printed on the pate, INDUSTRY-ACADEMIC COOPERATION, FOUNDATION, YONSEI UNIVERSITYInventors: Dong June Ahn, Byeong Su Kim, Sang Yup Lee, Woo Hyuk Jung, Min Seong Kim, Young Joo Hong
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Publication number: 20210163805Abstract: The present invention provides a composition comprising branched polyglycerol for controlling freezing, more specifically, the composition has a number average molecular weight of 1,000 to 20,000 g/mol and a branching of 0.1 to 1, and may control enhancement or inhibition of ice recrystallization by adjusting a content of polyglycerol.Type: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Applicants: Korea University Research and Business Foundation, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Dong June AHN, Byeong Su KIM, Sang Yup LEE, Woo Hyuk JUNG, Min Seong KIM, Young Joo HONG
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Publication number: 20210161125Abstract: The present invention provides a composition for inhibiting ice recrystallization, including: A nucleic acid structure comprising a scaffold nucleic acid folded at predetermined positions to form a plurality of strands, and a plurality of staple nucleic acids, wherein at least a portion thereof has a complementary sequence to at least a portion of the scaffold nucleic acid, thereby binding to the scaffold nucleic acid to form a double strand. Therefore, it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization upon cryopreservation of the cells, and maintain a texture of food even when using the composition in the freezing of food.Type: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Korea University Research and Business Foundation, PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATIONInventors: Dong June AHN, Ye Dam LEE, Do Nyun KIM, Chan Seok LEE, Sang Wook WU, Su Hyun PARK
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Publication number: 20210164880Abstract: The present invention provides a device for measuring a particle size at a low temperature, specifically, which includes a refrigerant tank containing a refrigerant; a heat conduction plate thermally connected to the refrigerant tank; and a nanoantenna located on the heat conduction plate, thereby it is possible to determine a degree of light transmission to the sample to be measured located on an upper portion of the nanoantenna, and predict the physical properties of the sample.Type: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Applicant: Korea University Research and Business FoundationInventors: Dong June AHN, Myung Ki Kim, Ye Dam Lee, Nu Ri Park
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Publication number: 20210155495Abstract: The present invention provides a composition for antifreezing including a gold (Au) nanostructure in which at least a portion thereof is concave, thereby it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization when cryopreservation of the cells, and maintain a texture of food even when using in the freezing of food.Type: ApplicationFiled: December 3, 2019Publication date: May 27, 2021Applicant: Korea University Research and Business FoundationInventors: Dong June AHN, Sang Yup Lee, Yong Ho Cho
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Publication number: 20210106000Abstract: The present invention provides a a nanostructure which includes: a core comprising one or more planes configured to come into planar contact with at least one plane of an ice crystal; and an oligopeptide which is conjugated to at least one plane of the core and comprises (Thr)n-, (Ala)n-, (Ser)n-, or (Gly)n-, wherein the nanostructure is a polyhedron-shaped nanostructure present in water in a colloidal form to control freezing, and n is an integer of 2 to 7.Type: ApplicationFiled: December 3, 2019Publication date: April 15, 2021Applicant: Korea University Research and Business FoundationInventors: Seungwoo LEE, Dong June AHN, Dong Kwon LIM, Jae Won LEE, Sang Yup LEE
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Patent number: 10976336Abstract: An apparatus for measuring fluid speed by using the refraction of light is disclosed. The apparatus includes: a channel in which a passage is formed to allow the flow of a fluid; a first and a second light source that are located in any one region of an upper part and a lower part of the channel; a sensor installed in an opposite region of the region where the first and second light sources are located with respect to the channel, to receive the light emitted from the first and second light sources; a speed calculation unit that calculates the speed of the fluid by using a time point at which the intensity of the light received at the sensor changes; and an adjustment unit that is connected to the channel and configured to adjust the flow speed of the fluid based on the calculated speed of the fluid.Type: GrantFiled: June 24, 2015Date of Patent: April 13, 2021Assignee: ABSOLOGY CO., LTD.Inventors: Seok Chung, Eun Doo Lee, Jung Hyo Yoon, Se Woon Han, Jae Ho Kim, Young Kyu Cho, David Lim, Yong Hun Jung, Dong June Ahn
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Publication number: 20210040455Abstract: The present invention provides a gene including an M13 p5 expressing cassette, which includes a promoter, a ribosome binding site (RBS) and a protein 5 (p5) coding region, wherein at least one base of sequences between the RBS and the p5 coding region is mutated. Using this gene may increase production of single-stranded DNA.Type: ApplicationFiled: December 3, 2019Publication date: February 11, 2021Applicant: Korea University Research and Business FoundationInventors: Min Kyu OH, Dong June AHN, Seungwoo LEE, Bo Young LEE, Jun Min LEE, Jae Won LEE
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Patent number: 10246405Abstract: Provided are a radial porous diacetylene particle, which is synthesized by ion-bonding a diacetylene-containing dicarboxylic acid or diamine monomer represented by Formula 1 with a diamine or dicarboxylic acid monomer represented by Formula 2, and a method of manufacturing the same.Type: GrantFiled: January 27, 2016Date of Patent: April 2, 2019Assignee: Korea University Research and Business FoundationInventors: Dong June Ahn, Doo Ho Yang
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Publication number: 20170307649Abstract: An apparatus for measuring fluid speed by using the refraction of light is disclosed. The apparatus includes: a channel in which a passage is formed to allow the flow of a fluid; a first and a second light source that are located in any one region of an upper part and a lower part of the channel; a sensor installed in an opposite region of the region where the first and second light sources are located with respect to the channel, to receive the light emitted from the first and second light sources; a speed calculation unit that calculates the speed of the fluid by using a time point at which the intensity of the light received at the sensor changes; and an adjustment unit that is connected to the channel and configured to adjust the flow speed of the fluid based on the calculated speed of the fluid.Type: ApplicationFiled: June 24, 2015Publication date: October 26, 2017Inventors: Seok CHUNG, Eun Doo LEE, Jung Hyo YOON, Se Woon HAN, Jae Ho KIM, Young Kyu CHO, David LIM, Yong Hun JUNG, Dong June AHN
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Publication number: 20160137586Abstract: Provided are a radial porous diacetylene particle, which is synthesized by ion-bonding a diacetylene-containing dicarboxylic acid or diamine monomer represented by Formula 1 above with a diamine or dicarboxylic acid monomer represented by Formula 2 above, and a method of manufacturing the same.Type: ApplicationFiled: January 27, 2016Publication date: May 19, 2016Inventors: Dong June Ahn, Doo Ho Yang
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Publication number: 20120315481Abstract: Provided are a radial porous diacetylene particle, which is synthesized by ion-bonding a diacetylene-containing dicarboxylic acid or diamine monomer represented by Formula 1 above with a diamine or dicarboxylic acid monomer represented by Formula 2 above, and a method of manufacturing the same.Type: ApplicationFiled: April 6, 2012Publication date: December 13, 2012Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: Dong June Ahn, Doo Ho Yang
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Patent number: 7776554Abstract: There is provided a polydiacetylene supramolecule comprising diacetylene molecules, capable of immobilizing a receptor molecule having a thiol group. Since the polydiacetylene supramolecule has a receptor immobilized thereon having a thiol group, for example, an antibody, and thus shows color transition when reacting with a sample, an antigen can be detected through specific color transition of the polydiacetylene when employing in a receptor-ligand reaction, for example, an antibody-antigen reaction.Type: GrantFiled: December 15, 2006Date of Patent: August 17, 2010Assignee: Sungkyunkwan UniversityInventors: Sang-jun Sim, Sang-wook Lee, Dong June Ahn, Doo ho Yang