Patents by Inventor Woo Jin Hyun
Woo Jin Hyun 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: 20230352729Abstract: A heterostructure ionogel electrolyte includes a first electrolyte comprising a first ionic liquid and a matrix; and a second electrolyte comprising a second ionic liquid and the matrix, wherein the first ionic liquid is a high-potential ionic liquid, the second ionic liquid is a low-potential ionic liquid, and the matrix comprises nanoplatelets/nanosheets; and wherein the first electrolyte and the second electrolyte are assembled to define a heterointerface therebetween.Type: ApplicationFiled: September 28, 2021Publication date: November 2, 2023Inventors: Mark C. Hersam, Woo Jin Hyun
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Publication number: 20230087700Abstract: One aspect of this invention relates to hexagonal boron nitride (hBN) ionogel inks using exfoliated hBN nanoplatelets as the solid matrix. The hBN nanoplatelets are produced from bulk hBN powders by liquid-phase exfoliation, allowing printable hBN ionogel inks to be formulated following the addition of an imidazolium ionic liquid and ethyl lactate. The resulting inks are reliably printed with variable patterns and controllable thicknesses by aerosol jet printing, resulting in hBN ionogels that possess high room-temperature ionic conductivities and storage moduli of >3 mS cm-1 and >1 MPa, respectively. By integrating the hBN ionogel with printed semiconductors and electrical contacts, fully-printed thin-film transistors with operating voltages below 1 V are demonstrated on polyimide films. These devices exhibit desirable electrical performance and robust mechanical tolerance against repeated bending cycles, thus confirming the suitability of hBN ionogels for printed and flexible electronics.Type: ApplicationFiled: January 28, 2021Publication date: March 23, 2023Inventors: Mark C. Hersam, Woo Jin Hyun
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Publication number: 20230065149Abstract: One aspect of the invention relates to an ionogel electrolyte ink including an ionic liquid; and a gelling matrix material. The gelling matrix material is mixed with the ionic liquid in at least one solvent.Type: ApplicationFiled: October 18, 2022Publication date: March 2, 2023Inventors: Mark C. Hersam, Woo Jin Hyun, Lindsay E. Chaney
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Publication number: 20220209293Abstract: This invention discloses high-modulus, ion-conductive gel electrolytes and methods of making the gel electrolytes and electrochemical devices. The gel electrolytes include an ionic liquid and nanosheets mixed in the ionic liquid. The nanosheets in one example include exfoliated hexagonal boron nitride (hBN) nanosheets. Compared to conventional bulk hBN microparticles, exfoliated hBN nanosheets improve the mechanical properties of the gel electrolytes by about 2 orders of magnitude, while retaining high ionic conductivity at room temperature. Moreover, exfoliated hBN nanosheets are compatible with high-voltage cathodes, and impart exceptional thermal stability that allows high-rate operation of solid-state rechargeable lithium-ion batteries at high temperatures.Type: ApplicationFiled: May 18, 2020Publication date: June 30, 2022Inventors: Mark C. Hersam, Woo Jin Hyun
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Patent number: 11063490Abstract: One embodiment relates to a motor comprising: a motor housing comprising a first housing and a second housing; a stator disposed in the motor housing; a coil wound around the stator; a rotor rotatably disposed in the stator; a shaft coupling with the rotor; a bearing for supporting the shaft; and a busbar terminal connected with an end portion of the coil, wherein the first housing comprises a body part and a first flange, the body part comprising a first region, and a second region extending from the first region, and the first flange extending in a vertical direction from an end portion of the second region, and the busbar terminal and the bearing are disposed in the first region. Accordingly, the structure of the motor may be simplified, and a gap due to tolerance among components may be minimized, and thus the reliability of the motor may be enhanced.Type: GrantFiled: June 19, 2017Date of Patent: July 13, 2021Assignee: LG INNOTEK CO., LTD.Inventors: Sung Joo Oh, Woo Jin Hyun
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Patent number: 10982741Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: GrantFiled: October 29, 2019Date of Patent: April 20, 2021Assignee: LG INNOTEK CO., LTD.Inventor: Woo Jin Hyun
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Publication number: 20200063840Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: ApplicationFiled: October 29, 2019Publication date: February 27, 2020Inventor: Woo Jin HYUN
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Patent number: 10495198Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: GrantFiled: March 30, 2017Date of Patent: December 3, 2019Assignee: LG INNOTEK CO., LTD.Inventor: Woo Jin Hyun
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Patent number: 10479905Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.Type: GrantFiled: December 8, 2017Date of Patent: November 19, 2019Assignees: NORTHWESTERN UNIVERSITY, REGENTS OF THE UNIVERSITY OF MINNESOTAInventors: Mark C. Hersam, Ethan B. Secor, Sooman Lim, C. Daniel Frisbie, Lorraine F. Francis, Woo Jin Hyun
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Publication number: 20190305634Abstract: One embodiment relates to a motor comprising: a motor housing comprising a first housing and a second housing; a stator disposed in the motor housing; a coil wound around the stator; a rotor rotatably disposed in the stator; a shaft coupling with the rotor; a bearing for supporting the shaft; and a busbar terminal connected with an end portion of the coil, wherein the first housing comprises a body part and a first flange, the body part comprising a first region, and a second region extending from the first region, and the first flange extending in a vertical direction from an end portion of the second region, and the busbar terminal and the bearing are disposed in the first region. Accordingly, the structure of the motor may be simplified, and a gap due to tolerance among components may be minimized, and thus the reliability of the motor may be enhanced.Type: ApplicationFiled: June 19, 2017Publication date: October 3, 2019Inventors: Sung Joo OH, Woo Jin HYUN
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Publication number: 20190099751Abstract: An open-channel microfluidic diode includes a first reservoir, a second reservoir, a first channel and a second channel. The first channel is in fluid communication with the first reservoir, wherein the first channel is characterized by a first cross-sectional area. The second channel is in fluid communication with the first channel and the second reservoir, wherein the second channel is characterized by a second cross-sectional area greater than the first cross-sectional area. The first channel interacts with the second channel at a junction, and wherein liquid flows from the second channel to the first channel via capillary forces.Type: ApplicationFiled: September 28, 2018Publication date: April 4, 2019Inventors: Woo Jin Hyun, Lorraine F. Francis, Carl Daniel Frisbie
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Publication number: 20180100080Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.Type: ApplicationFiled: December 8, 2017Publication date: April 12, 2018Inventors: Mark C. Hersam, Ethan B. Secor, Sooman Lim, C. Daniel Frisbie, Lorraine F. Francis, Woo Jin Hyun
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Patent number: 9929626Abstract: A cooling-member-integrated motor includes a housing and a stator including a stator core and a stator coil wound around the stator core. A cooling member surrounds an outer circumferential surface of the stator, and a molding member is disposed in the housing. The stator and the cooling member are integrally embedded in the molding member.Type: GrantFiled: December 13, 2013Date of Patent: March 27, 2018Assignee: LG Innotek Co., Ltd.Inventor: Woo Jin Hyun
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Patent number: 9840634Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.Type: GrantFiled: April 29, 2015Date of Patent: December 12, 2017Assignees: Northwestern University, Regents of the University of MinnesotaInventors: Mark C. Hersam, Ethan B. Secor, Sooman Lim, C. Daniel Frisbie, Lorraine F. Francis, Woo Jin Hyun
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Patent number: 9825503Abstract: Disclosed is a motor, the motor according to an exemplary embodiment of the present disclosure including a motor unit including a stator, a rotor and a rotation shaft receiving a rotary power from the rotor, a first housing accommodating the motor unit and including a hitching rim protruded thereinto at a distal end of an upper surface, a second housing interposed between the first housing and the motor unit and including a first flange unit protruded to an upper outer surface for a space distanced from the first housing and a second flange protruded to a bottom outer surface, a first cover coupled to an upper surface of the first housing and the second housing, and a second cover coupled to a bottom surface of the first housing and the second housing.Type: GrantFiled: June 20, 2013Date of Patent: November 21, 2017Assignee: LG INNOTEK CO., LTD.Inventor: Woo Jin Hyun
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Publication number: 20170204951Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: ApplicationFiled: March 30, 2017Publication date: July 20, 2017Inventor: Woo Jin HYUN
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Patent number: 9644719Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: GrantFiled: July 31, 2014Date of Patent: May 9, 2017Assignee: LG INNOTEK CO., LTD.Inventor: Woo Jin Hyun
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Publication number: 20150307730Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.Type: ApplicationFiled: April 29, 2015Publication date: October 29, 2015Inventors: Mark C. Hersam, Ethan B. Secor, Sooman Lim, C. Daniel Frisbie, Lorraine F. Francis, Woo Jin Hyun
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Publication number: 20150020623Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: ApplicationFiled: July 31, 2014Publication date: January 22, 2015Inventor: Woo Jin HYUN
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Patent number: 8826757Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.Type: GrantFiled: September 27, 2013Date of Patent: September 9, 2014Assignee: LG Innotek Co., Ltd.Inventor: Woo Jin Hyun