Patents by Inventor Young-Koan Ko
Young-Koan Ko 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: 20230358361Abstract: Provided is a high-pressure tank wound with a hoop layer and a helical layer. According to the present invention, the high-pressure tank includes: a liner which includes a cylinder portion and two dome portions respectively formed at both ends of the cylinder portion; and a composite material layer which includes a hoop layer and a helical layer, wound on an outer circumferential surface of the liner, wherein the helical layer includes a twist portion wound on a junction portion of the cylinder portion and the dome portion, and the twist portion is twisted and wound while wrapping on an end portion of the hoop layer when the helical layer passes by the hoop layer and is then wound toward the dome portion.Type: ApplicationFiled: November 18, 2020Publication date: November 9, 2023Inventors: You Jung LEE, Young Koan KO, Dae Gun KIM, Won Young KIM
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Patent number: 11668436Abstract: Disclosed are a pressure vessel boss and a pressure vessel having same, the boss comprising: a boss body in which a through hole configured to connect an interior to an exterior of the pressure vessel is formed; and a boss joint portion which surrounds an outer surface of the boss body, radially extends outward, and has an outer surface coming into surface contact with and joined to an opening surface of a liner, wherein the outer surface has a cross-sectional shape having three or more line segments connecting a top to a bottom of the boss joint portion and including at least one convex corner and at least one concave corner.Type: GrantFiled: November 28, 2019Date of Patent: June 6, 2023Assignee: LOTTE CHEMICAL CORPORATIONInventors: Dae Gun Kim, Kyo Min Lee, Young Koan Ko
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Patent number: 11598487Abstract: The present invention relates to a sealing apparatus for a high-pressure tank and a high-pressure tank comprising same, wherein the sealing apparatus comprises: a liner configured to accommodate a high-pressure fluid; a connection boss which is a metallic connector provided at an inlet of the liner and includes a first connection boss part coupled to an inner surface of the inlet and a second connection boss part coupled to an outer surface of the inlet and having a tapered shape with a relatively narrow upper side and a relatively wide lower side; and a coupling member configured to come into surface contact with an outer surface of the second connection boss part and having a tilted surface corresponding to a shape of the second connection boss part so that an inner diameter of a lower side is larger than that of an upper side.Type: GrantFiled: November 28, 2019Date of Patent: March 7, 2023Assignee: LOTTE CHEMICAL CORPORATIONInventors: You Jung Lee, Young Koan Ko, Dae Gun Kim, Won Young Kim, Tae Wook Kim
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Publication number: 20230003347Abstract: The present invention relates to a knob cap for a high-pressure tank including a coupling groove portion corresponding to a knob of a liner of the high-pressure tank formed in a lower surface of a body; a peripheral wing portion extending outward in a lower end of an outer circumferential surface of the body to be in contact with a surface of the liner; and a thickness conversion portion formed in the outer circumferential surface of the body to change a thickness between a center line and the outer circumferential surface.Type: ApplicationFiled: November 18, 2020Publication date: January 5, 2023Inventors: Dae Gun KIM, Kyo Min LEE, Young Koan KO, You Jung LEE, Won Young KIM
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Publication number: 20220403984Abstract: The present invention discloses a knob cap for a high-pressure tank including a first knob cap portion having a coupling groove coupled to a knob of a liner of the high-pressure tank in a lower surface, including a peripheral wing portion extending outward to be in contact with a surface of the liner to outside of a lower portion, and having a column portion in the shape of a column extending upward in a center; and a second knob cap portion integrally coupled with the first knob cap portion, having the column portion of the first knob cap portion inserted into a hollow, and including a plurality of inner grooves in the shape of a column having an upper end opened outside of the hollow and extending downward.Type: ApplicationFiled: November 18, 2020Publication date: December 22, 2022Inventors: Dae Gun KIM, Kyo Min LEE, Young Koan KO, You Jung LEE, Won Young KIM
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Publication number: 20220112985Abstract: Disclosed are a pressure vessel boss and a pressure vessel having same, the boss comprising: a boss body in which a through hole configured to connect an interior to an exterior of the pressure vessel is formed; and a boss joint portion which surrounds an outer surface of the boss body, radially extends outward, and has an outer surface coming into surface contact with and joined to an opening surface of a liner, wherein the outer surface has a cross-sectional shape having three or more line segments connecting a top to a bottom of the boss joint portion and including at least one convex corner and at least one concave corner.Type: ApplicationFiled: November 28, 2019Publication date: April 14, 2022Applicant: LOTTE CHEMICAL CORPORATIONInventors: Dae Gun Kim, Kyo Min Lee, Young Koan Ko
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Publication number: 20210396357Abstract: The present invention relates to a sealing apparatus for a high-pressure tank and a high-pressure tank comprising same, wherein the sealing apparatus comprises: a liner configured to accommodate a high-pressure fluid; a connection boss which is a metallic connector provided at an inlet of the liner and includes a first connection boss part coupled to an inner surface of the inlet and a second connection boss part coupled to an outer surface of the inlet and having a tapered shape with a relatively narrow upper side and a relatively wide lower side; and a coupling member configured to come into surface contact with an outer surface of the second connection boss part and having a tilted surface corresponding to a shape of the second connection boss part so that an inner diameter of a lower side is larger than that of an upper side.Type: ApplicationFiled: November 28, 2019Publication date: December 23, 2021Applicant: LOTTE CHEMICAL CORPORATIONInventors: You Jung Lee, Young Koan Ko, Dae Gun Kim, Won Young Kim, Tae Wook Kim
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Publication number: 20170217140Abstract: The present invention relates to a continuous fiber composite including: a continuous fiber layer; a modified polyolefin layer; and a polyolefin resin layer, and a method for producing the same.Type: ApplicationFiled: July 29, 2015Publication date: August 3, 2017Inventors: Hey Jin HAN, Young Koan KO, Dae Gun KIM, Won Seock KIM, Sang Woo KIM
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Patent number: 8546522Abstract: Provided are a method for preparing fine round powdery polycarbonate and a method for preparing a high molecular weight polycarbonate resin using the same. More specifically, provided are a method for preparing fine round powdery polycarbonate, comprising (A) polymerizing non-phosgene polycarbonate, (B) extruding the polycarbonate into fine round powdery amorphous polycarbonate, (C) surface-crystallizing the fine round powdery amorphous polycarbonate in the presence of a solvent or dispersion medium, and (D) drying the surface-crystallized fine round powdery polycarbonate, and a method for preparing high molecular weight polycarbonate resin capable of obtaining polycarbonates with various molecular weights ranging from low molecular weights to high molecular weights by continuously using the obtained fine round powdery polycarbonate via a solid state polymerization step.Type: GrantFiled: October 13, 2009Date of Patent: October 1, 2013Assignee: Lotte Chemical CorporationInventors: Se Hoon Kim, Sang Hyun Park, Young Koan Ko
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Patent number: 8067341Abstract: Carbon nanotube (CNT) films, patterns and biochips and methods of making the same are provided. Such a biochip comprises a bio-receptor attached by means of an exposed chemical functional group on a surface of a high density CNT film or pattern produced by repeated lamination of CNTs on a substrate with exposed amine groups. Various types of CNT-biochips may be fabricated by bonding of bio-receptors to a CNT pattern (or film) containing exposed carboxyl groups or modified by various chemical functional groups. Further, the CNT-biochip may be used to measure an electrical or electrochemical signal using both conductor and semiconductor properties of the CNT, thereby not needing labeling. Upon fluorescent measurement of DNA hybridization using such a CNT-DNA chip it is possible to show more distinct signals useful for genotyping, mutation detection, pathogen identification and the like.Type: GrantFiled: March 19, 2004Date of Patent: November 29, 2011Inventors: Hee Tae Jung, Sang Yup Lee, Dae Hwan Jung, Byung Hun Kim, Young Koan Ko
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Publication number: 20110245451Abstract: Provided are a method for preparing fine round powdery polycarbonate and a method for preparing a high molecular weight polycarbonate resin using the same. More specifically, provided are a method for preparing fine round powdery polycarbonate, comprising (A) polymerizing non-phosgene polycarbonate, (B) extruding the polycarbonate into fine round powdery amorphous polycarbonate, (C) surface-crystallizing the fine round powdery amorphous polycarbonate in the presence of a solvent or dispersion medium, and (D) drying the surface-crystallized fine round powdery polycarbonate, and a method for preparing high molecular weight polycarbonate resin capable of obtaining polycarbonates with various molecular weights ranging from low molecular weights to high molecular weights by continuously using the obtained fine round powdery polycarbonate via a solid state polymerization step.Type: ApplicationFiled: October 13, 2009Publication date: October 6, 2011Inventors: Se Hoon Kim, Sang Hyun Park, Young Koan Ko
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Publication number: 20110027498Abstract: The present invention relates to a method for fabricating a field emitter electrode, in which carbon nanotubes (CNTs) are aligned in the direction of a generated magnetic field. Specifically, the method comprises the steps of dispersing a solution of carbon nanotubes (CNTs) diluted in a solvent, on a substrate fixed to the upper part of an electromagnetic field generator, and fixing the carbon nanotubes aligned in the direction of an electromagnetic field generated from the electromagnetic field generator. According to the disclosed method, high-density and high-capacity carbon nanotubes aligned in the direction of a generated electromagnetic field can be fabricated in a simple process and can be applied as positive electrode materials for field emission displays (FEDs), sensors, electrodes, backlights and the like.Type: ApplicationFiled: October 8, 2010Publication date: February 3, 2011Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hee-Tae Jung, Sang-Cheon Youn, Young-Koan Ko
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Publication number: 20100320439Abstract: A Carbon NanoTube (CNT) structure includes a substrate, a CNT support layer, and a plurality of CNTs. The CNT support layer is stacked on the substrate and has pores therein. One end of each of the CNTs is attached to portions of the substrate exposed through the pores and each of the CNTs has its lateral sides supported by the CNT support layer. A method of vertically aligning CNTs includes: forming a first conductive substrate; stacking a CNT support layer having pores on the first conductive substrate; and attaching one end of the each of the CNTs to portions of the first conductive substrate exposed through the pores.Type: ApplicationFiled: April 9, 2008Publication date: December 23, 2010Inventors: Yong-Wan Jin, Jong-Min Kim, Hee-Tae Jung, Tae-Won Jeong, Young-Koan Ko
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Publication number: 20100133983Abstract: The present invention relates to a method for manufacturing a field emitter electrode, in which nanowires are aligned horizontally, perpendicularly or at any angle between horizontal and perpendicular according to the direction of a generated electromagnetic field. More particularly, the present invention relates to a method for manufacturing a field emitter electrode having nanowires aligned horizontally, perpendicularly or at any angle between horizontal and perpendicular according to the direction of a generated electromagnetic field, the method comprising the steps of diluting nanowires in a solvent, dispersing the resulting solution on a substrate fixed to the upper part of an electromagnetic field generator, and fixing the nanowires aligned in the direction of an electromagnetic field generated from the electromagnetic field generator.Type: ApplicationFiled: July 25, 2007Publication date: June 3, 2010Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hee-Tae Jung, Sang Cheon Youn, Young Koan Ko
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Patent number: 7670831Abstract: Conductive carbon nanotubes (CNTs) obtained by dotting carboxylated CNTs with metal nanocrystals by chemical functional groups, are described, as well as a method for fabricating a pattern or film of the conductive CNTs which involves repeatedly depositing conductive CNTs on a substrate to achieve high surface density. A biosensor is described, in which bioreceptors that bind to target biomolecules are selectively attached to conductive CNTs or a conductive CNT pattern or film. By use of the conductive biosensor, various target biomaterials that bind or react with the bioreceptors can be precisely measured directly or by electrochemical signals at large amounts in one step. Additionally, the biosensor can be used for an electrical detection method capable of providing precise measurement results even with a small amount of source material.Type: GrantFiled: June 3, 2004Date of Patent: March 2, 2010Assignee: Korea Advanced Institute of Science and TechnologyInventors: Sang Yup Lee, Hee Tae Jung, Dae Hwan Jung, Young Koan Ko, Do Hyun Kim, Seok Jae Lee, Byung Hun Kim, Jae Shin Lee
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Publication number: 20100009432Abstract: Conductive carbon nanotubes (CNTs) obtained by dotting carboxylated CNTs with metal nanocrystals by chemical functional groups, are described, as well as a method for fabricating a pattern or film of the conductive CNTs which involves repeatedly depositing conductive CNTs on a substrate to achieve high surface density. A biosensor is described, in which bioreceptors that bind to target biomolecules are selectively attached to conductive CNTs or a conductive CNT pattern or film. By use of the conductive biosensor, various target biomaterials that bind or react with the bioreceptors can be precisely measured directly or by electrochemical signals at large amounts in one step. Additionally, the biosensor can be used for an electrical detection method capable of providing precise measurement results even with a small amount of source material.Type: ApplicationFiled: June 3, 2004Publication date: January 14, 2010Inventors: Sang Yup Lee, Hee Tae Jung, Dae Hwan Jung, Young Koan Ko, Do Hyun Kim, Seok Jae Lee, Byung Hun Kim, Jae Shin Lee
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Patent number: 7371696Abstract: A Carbon NanoTube (CNT) structure includes a substrate, a CNT support layer, and a plurality of CNTs. The CNT support layer is stacked on the substrate and has pores therein. One end of each of the CNTs is attached to portions of the substrate exposed through the pores and each of the CNTs has its lateral sides supported by the CNT support layer. A method of vertically aligning CNTs includes: forming a first conductive substrate; stacking a CNT support layer having pores on the first conductive substrate; and attaching one end of the each of the CNTs to portions of the first conductive substrate exposed through the pores.Type: GrantFiled: June 19, 2006Date of Patent: May 13, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Yong-Wan Jin, Jong-Min Kim, Hee-Tae Jung, Tae-Won Jeong, Young-Koan Ko
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Publication number: 20070275627Abstract: The present invention relates to a method for fabricating a field emitter electrode, in which carbon nanotubes (CNTs) are aligned in the direction of a generated magnetic field. Specifically, the method comprises the steps of dispersing a solution of carbon nanotubes (CNTs) diluted in a solvent, on a substrate fixed to the upper part of an electromagnetic field generator, and fixing the carbon nanotubes aligned in the direction of an electromagnetic field generated from the electromagnetic field generator. According to the disclosed method, high-density and high-capacity carbon nanotubes aligned in the direction of a generated electromagnetic field can be fabricated in a simple process and can be applied as positive electrode materials for field emission displays (FEDs), sensors, electrodes, backlights and the like.Type: ApplicationFiled: March 2, 2007Publication date: November 29, 2007Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hee-Tae Jung, Sang-Cheon Youn, Young-Koan Ko
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Publication number: 20070082426Abstract: A Carbon NanoTube (CNT) structure includes a substrate, a CNT support layer, and a plurality of CNTs. The CNT support layer is stacked on the substrate and has pores therein. One end of each of the CNTs is attached to portions of the substrate exposed through the pores and each of the CNTs has its lateral sides supported by the CNT support layer. A method of vertically aligning CNTs includes: forming a first conductive substrate; stacking a CNT support layer having pores on the first conductive substrate; and attaching one end of the each of the CNTs to portions of the first conductive substrate exposed through the pores.Type: ApplicationFiled: June 19, 2006Publication date: April 12, 2007Inventors: Yong-Wan Jin, Jong-Min Kim, Hee-Tae Jung, Tae-Won Jeong, Young-Koan Ko