Patents by Inventor Jiyoung Oh
Jiyoung Oh 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: 20200088175Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber twist-inserted polymer fibers generate tensile actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize coiled polymer fibers and can be either neat or comprising a guest. In some embodiments, the coiled polymer fibers actuator can be incorporated into an article, such as a textile, braid, clothing, smart packaging, or a mechanical system, and the coiled polymer fiber in the coiled polymer fiber actuator can have a stroke amplification factor of 5 or greater.Type: ApplicationFiled: November 15, 2019Publication date: March 19, 2020Applicant: Board of Regents, The University of Texas SystemInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung DeAndrade, Shaoli Fang, Jiyoung Oh, Mikhail E. Kozlov, Dongseok Suh, Ray H. Baughman
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Patent number: 10480491Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize coiled yarns/polymer fibers and can be either neat or comprising a guest. In some embodiments, the torsional fiber actuator includes a first polymer fiber (exhibiting a first polymer fiber diameter) and a torsional return spring in communication with the first polymer fiber. The first polymer fiber is configured to include a first plurality of twists in a first direction to produce a twisted polymer fiber. The first polymer fiber is further configured to include a plurality of coils in the twisted polymer fiber in a second direction each coil having a mean coil diameter.Type: GrantFiled: November 16, 2017Date of Patent: November 19, 2019Assignee: THE BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung DeAndrade, Shaoli Fang, Jiyoung Oh, Mikhail E. Kozlov, Dongseok Suh, Ray H. Baughman
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Publication number: 20190108272Abstract: The process receives a visual specification, which specifies data sources, visual variables, and data fields from the data sources. Each visual variable is associated with one or more data fields and each data field is either a dimension or a measure. For each measure m, the process identifies a set R(m) consisting of dimensions that are reachable from the measure by a sequence of many-to-one relationships in an object model for the data sources. For each distinct set R, the process forms a data field set S, consisting of each dimension in R and each measure m for which R(m)=R. For each set S and for each measure in the set S, the process aggregates values of the measure according to the dimensions in S. The process builds a data visualization according to the data fields in the set S and the visual variables they are associated with.Type: ApplicationFiled: March 2, 2018Publication date: April 11, 2019Inventors: Justin Talbot, Roger Hau, Daniel Cory, Jiyoung Oh, Teresa Roberts
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Patent number: 10079380Abstract: Disclosed herein is a jelly roll for a secondary battery configured by winding a cathode sheet, a separator, and an anode sheet, wherein electrode tabs are connected to uncoated portions of the electrode sheets, to which electrode active materials are not applied, by welding, and each of the electrode tabs is configured to have an embossed structure protruding toward the uncoated portion to improve weldability.Type: GrantFiled: June 21, 2016Date of Patent: September 18, 2018Assignee: LG CHEM, LTD.Inventors: Jiyoung Oh, Ki Gon Kim, Dae Hyun Cho, Junbo Seo
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Publication number: 20180073490Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize coiled yarns/polymer fibers and can be either neat or comprising a guest. In some embodiments, the torsional fiber actuator includes a first polymer fiber (exhibiting a first polymer fiber diameter) and a torsional return spring in communication with the first polymer fiber. The first polymer fiber is configured to include a first plurality of twists in a first direction to produce a twisted polymer fiber. The first polymer fiber is further configured to include a plurality of coils in the twisted polymer fiber in a second direction each coil having a mean coil diameter.Type: ApplicationFiled: November 16, 2017Publication date: March 15, 2018Applicant: Board of Regents, The University of Texas SystemInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung DeAndrade, Shaoli Fang, Jiyoung Oh, Mikhail E. Kozlov, Dongseok Suh, Ray H. Baughman
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Patent number: 9903350Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional and/or tensile actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize non-coiled or coiled yarns and can be either neat or comprising a guest. Devices comprising these artificial muscles are also described.Type: GrantFiled: August 1, 2013Date of Patent: February 27, 2018Assignee: The Board of Regents, The University of Texas SystemInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung De Andrade, Shaoli Fang, Jiyoung Oh, Mikhail E. Kozlov, Fatma Goktepe, Ozer Goktepe, Dongseok Suh, Ray H. Baughman
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Patent number: 9784249Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional and/or tensile actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize non-coiled or coiled yarns and can be either neat or comprising a guest. Devices comprising these artificial muscles are also described.Type: GrantFiled: January 30, 2015Date of Patent: October 10, 2017Assignee: The Board of Regents, The University of Texas SystemInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung De Andrade, Shaoli Fang, Jiyoung Oh, Mikhail E. Kozlov, Dongseok Suh, Ray H. Baughman
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Publication number: 20160301060Abstract: Disclosed herein is a jelly roll for a secondary battery configured by winding a cathode sheet, a separator, and an anode sheet, wherein electrode tabs are connected to uncoated portions of the electrode sheets, to which electrode active materials are not applied, by welding, and each of the electrode tabs is configured to have an embossed structure protruding toward the uncoated portion to improve weldability.Type: ApplicationFiled: June 21, 2016Publication date: October 13, 2016Applicant: LG CHEM, LTD.Inventors: Jiyoung Oh, Ki Gon Kim, Dae Hyun Cho, Junbo Seo
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Patent number: 9154058Abstract: Nanofiber actuators and strain amplifiers having a material that generates a force or generates a displacement when directly or indirectly electrically driven. This material is an aerogel or a related low density or high density network comprising conducting fibers that are electrically interconnected and can substantially actuate without the required presence of either a liquid or solid electrolyte. Reversible or permanently frozen actuation is used to modify the properties of the actuator material for applications.Type: GrantFiled: August 17, 2009Date of Patent: October 6, 2015Assignee: Board of Regents, The University of Texas SystemInventors: Ray H. Baughman, Ali E. Aliev, Jiyoung Oh, Mikhail Kozlov, Shaoli Fang, Raquel Ovalle-Robles, Anvar A. Zakhidov
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Publication number: 20150219078Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional and/or tensile actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize non-coiled or coiled yarns and can be either neat or comprising a guest. Devices comprising these artificial muscles are also described.Type: ApplicationFiled: August 1, 2013Publication date: August 6, 2015Applicant: The Board of Regents, The University of Texas SystemInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung DeAndrade, Shaoli Fang, Jiyoung Oh, Mikhail Kozlov, Fatma Goktepe, Ozer Goktepe, Dongseok Suh, Ray H. Baughman
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Publication number: 20150152852Abstract: Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional and/or tensile actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize non-coiled or coiled yarns and can be either neat or comprising a guest. Devices comprising these artificial muscles are also described.Type: ApplicationFiled: January 30, 2015Publication date: June 4, 2015Applicant: The Board of Regents, The University of Texas SystemInventors: Na Li, Carter S. Haines, Marcio D. Lima, Monica Jung De Andrade, Shaoli Fang, Jiyoung Oh, Mikhail E. Kozlov, Dongseok Suh, Ray H. Baughman
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Patent number: 8778447Abstract: A hybrid composition includes poly-4-vinylphenol; a sodium compound; an aluminum compound; and a cross-linking agent effective to accelerate a cross-linking reaction of the ploy-4-vinylphenol, wherein, based on total weight of the poly-4-vinylphenol, the sodium compound and the aluminum compound, content of the poly-4-vinylphenol is 69 wt % to 99.89 wt %, content of the sodium compound is 0.01 wt % to 1 wt %, and content of the aluminum compound is 0.1 wt % to 30 wt %, and wherein content of the cross-linking agent ranges from 10 wt % to 30 wt % in an organic composition including the poly-4-vinylphenol and the cross-linking agent. A hybrid insulation layer that is dielectric and includes cross-linked poly-4-vinyl phenol is provided from the foregoing hybrid organic-inorganic composition.Type: GrantFiled: February 23, 2012Date of Patent: July 15, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jiyoung Oh, SangChul Lim
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Publication number: 20140147716Abstract: Disclosed herein is a jelly roll for a secondary battery configured by winding a cathode sheet, a separator, and an anode sheet, wherein electrode tabs are connected to uncoated portions of the electrode sheets, to which electrode active materials are not applied, by welding, and each of the electrode tabs is configured to have an embossed structure protruding toward the uncoated portion to improve weldability.Type: ApplicationFiled: February 3, 2014Publication date: May 29, 2014Applicant: LG CHEM, LTD.Inventors: Jiyoung OH, Ki Gon KIM, Dae Hyun CHO, Junbo SEO
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Publication number: 20130163067Abstract: Color electronic paper displays are provided. The color electronic paper display includes a substrate, a plurality of black matrices arrayed with a certain distance therebetween on the substrate, and electronic ink microcapsules between the black matrices. The black matrices cover interconnection lines disposed on the substrate. The electronic ink microcapsules include at least one first microcapsule containing white particles and yellow particles, at least one second microcapsule containing white particles and magenta particles, and at least one third microcapsule containing white particles and cyan particles. Related methods are also provided.Type: ApplicationFiled: September 7, 2012Publication date: June 27, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chul Am KIM, Jiyoung Oh
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Publication number: 20130153406Abstract: Methods of manufacturing metal oxide nanoparticles are provided. The method uses a bubble generation ultrasonic synthesis method. A gas is injected into a metal oxide preliminary composition solution to promote length growth of nanoparticles. After a basic chemical species solution is mixed with the metal oxide preliminary composition solution, ultrasonic waves are applied to form a reactant. The reactant is refined to manufacture metal oxide nanoparticles. The nanoparticles may have excellent dispersibility and a uniform thin film may be formed by the nanoparticles.Type: ApplicationFiled: September 10, 2012Publication date: June 20, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jiyoung Oh, SangChul Lim, Chul Am Kim
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Publication number: 20130119468Abstract: A thin-film transistor may include a drain electrode, a source electrode, an active layer, a gate electrode, and a gate insulating layer. In a vertical sectional view, the gate insulating layer may be disposed between the active layer and the gate electrode to include a first inorganic layer, an organic layer, and a second inorganic layer sequentially stacked. According to a method of fabricating the thin-film transistor, the gate insulating layer may be formed between the steps of forming the active layer and the second electrode layer or between the steps of forming the first electrode layer and the second electrode layer.Type: ApplicationFiled: June 22, 2012Publication date: May 16, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sang Chul LIM, Jiyoung OH, Seung Youl KANG, Hee-ok KIM, Kyoung Ik CHO, Seongdeok AHN
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Patent number: 8421610Abstract: Provided are a touch screen and a method of operating the same. The touch screen includes a detecting part, a control part, and a tactile feedback part. The detecting part detects object's approach or contact. The control part receives a signal of the detecting part to output a feedback signal. The tactile feedback part receives the feedback signal of the control part to provide a tactile feedback to a contact position using a magnetic force. The tactile feedback uses the magnetic force of a magnetic dipole.Type: GrantFiled: August 3, 2009Date of Patent: April 16, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Seongdeok Ahn, In-Kyu You, Jiyoung Oh, Chul Am Kim, Jae Bon Koo, Sang Seok Lee, Kyung Soo Suh, Kyoung Ik Cho
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Publication number: 20120231153Abstract: Hybrid compositions are provided. The hybrid composition includes poly-4-vinylphenol, sodium compound and aluminum compound. A content of the poly-4-vinylphenol to a total weight of the poly-4-vinylphenol, the sodium compound and the aluminum compound is 69 wt % to 99.89 wt %. A content of the sodium compound to a total weight of the poly-4-vinylphenol, the sodium compound and the aluminum compound is 0.01 wt % to 1 wt %. A content of the aluminum compound to a total weight of the poly-4-vinylphenol, the sodium compound and the aluminum compound is 0.1 wt % to 30 wt %.Type: ApplicationFiled: February 23, 2012Publication date: September 13, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jiyoung OH, SangChul LIM
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Patent number: 8096119Abstract: Fuel-powered actuators are described wherein actuation is a consequence of electrochemical processes, chemical processes, or combinations thereof. These fuel-powered actuators include artificial muscles and actuators in which actuation is non-mechanical. The actuators range from large actuators to microscopic and nanoscale devices.Type: GrantFiled: March 2, 2007Date of Patent: January 17, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Ray H. Baughman, Von Howard Ebron, Zhiwei Yang, Daniel J. Seyer, Mikhail Kozlov, Jiyoung Oh, Hui Xie, Joselito Razal, John P. Ferraris, Alan G. MacDiarmid, Robin B. McConnell, legal representative, Gayle P. Gentile, legal representative, William Alexander Macaulay
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Publication number: 20120000293Abstract: Nanofiber actuators and strain amplifiers having a material that generates a force or generates a displacement when directly or indirectly electrically driven. This material is an aerogel or a related low density or high density network comprising conducting fibers that are electrically interconnected and can substantially actuate without the required presence of either a liquid or solid electrolyte. Reversible or permanently frozen actuation is used to modify the properties of the actuator material for applications.Type: ApplicationFiled: August 17, 2009Publication date: January 5, 2012Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Ray H. Baughman, Ali E. Aliev, Jiyoung Oh, Mikhail Kozlov, Shaoli Fang, Raquel Ovalle-Robles, Anvar A. Zakhidov