Patents by Inventor Si-Hyung Lim
Si-Hyung Lim 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: 20240149243Abstract: The present disclosure provides a hybrid micro-gas chromatography column including a metal-organic framework (MOF) coating the inner wall of a channel, wherein the MOF is used as an adsorbent and a stationary phase for volatile organic compounds (VOCs) so that preconcentration and separation of VOCs are performed simultaneously. According to the present disclosure, it is possible to effectively achieve miniaturization of a portable gas chromatography (GC) system by providing a hybrid micro-gas chromatography column capable of simultaneously performing preconcentration and separation of low-concentration volatile organic compounds (VOCs).Type: ApplicationFiled: November 7, 2023Publication date: May 9, 2024Inventors: Si Hyung LIM, Yeongseok LEE
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Patent number: 11906490Abstract: Disclosed is a micro gas chromatography system including a fluid feeder for feeding a fluid composed of a carrier gas and a gas mixture containing an analyte component to the next stage, a micro gas preconcentrator chip configured to concentrate and desorb the analyte component contained in the fluid, a micro gas chromatography chip including a micro separation column for separating the analyte component concentrated and desorbed by the micro gas preconcentrator chip, and a micro sensing unit including a micro thermal conductivity detection sensor configured to detect the analyte component separated by the micro gas chromatography chip.Type: GrantFiled: April 23, 2019Date of Patent: February 20, 2024Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATIONInventors: Si-Hyung Lim, Jang Hyeon Lee, Jun Suk Lee
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Patent number: 11130126Abstract: There is provided a fluid analysis chamber module that allows an analysis element to be replaced in a sliding manner. The module includes a middle body, an upper body, and a lower body, in which the upper body and the lower body are rotated to be in contact with an upper surface and a lower surface of the middle body and to release from the contact state. The middle body provides a chamber hole where a tray with the analysis element seated thereon can be mounted. The middle body is provided on its front end with a tray receiving opening through which the tray is mounted into the chamber hole. When the upper body and lower body are rotated to be in contact with the upper surface and the lower surface, respectively, the chamber hole is closed, a fluid supplying line and discharging line are sealed, pogo pins for power supply and signal transmission are contacted to electrodes of the analysis element.Type: GrantFiled: July 24, 2019Date of Patent: September 28, 2021Assignee: Kookmin University Industry Academy Cooperation FoundationInventors: Si Hyung Lim, Jang Hyeon Lee, Yeong Seok Lee, Ae Ran Song
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Publication number: 20200261908Abstract: There is provided a fluid analysis chamber module that allows an analysis element to be replaced in a sliding manner. The module includes a middle body, an upper body, and a lower body, in which the upper body and the lower body are rotated to be in contact with an upper surface and a lower surface of the middle body and to release from the contact state. The middle body provides a chamber hole where a tray with the analysis element seated thereon can be mounted. The middle body is provided on its front end with a tray receiving opening through which the tray is mounted into the chamber hole. When the upper body and lower body are rotated to be in contact with the upper surface and the lower surface, respectively, the chamber hole is closed, a fluid supplying line and discharging line are sealed, pogo pins for power supply and signal transmission are contacted to electrodes of the analysis element.Type: ApplicationFiled: July 24, 2019Publication date: August 20, 2020Applicant: Kookmin University Industry Academy Cooperation FoundationInventors: Si Hyung Lim, Jang Hyeon Lee, Yeong Seok Lee, Ae Ran Song
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Publication number: 20200049673Abstract: Disclosed is a micro gas chromatography system including a fluid feeder for feeding a fluid composed of a carrier gas and a gas mixture containing an analyte component to the next stage, a micro gas preconcentrator chip configured to concentrate and desorb the analyte component contained in the fluid, a micro gas chromatography chip including a micro separation column for separating the analyte component concentrated and desorbed by the micro gas preconcentrator chip, and a micro sensing unit including a micro thermal conductivity detection sensor configured to detect the analyte component separated by the micro gas chromatography chip.Type: ApplicationFiled: April 23, 2019Publication date: February 13, 2020Inventors: Si-Hyung Lim, Jang Hyeon Lee, Jun Suk Lee
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Patent number: 10551361Abstract: Disclosed is a separation column for micro gas chromatography, having superior separation performance and including a microchannel formed on a substrate and having a serpentine shape, and bumps formed on the surface of the microchannel, wherein the bumps are alternately disposed to face each other on the surface of the microchannel. In the separation column for micro gas chromatography, a sufficient pressure drop occurs, and thus an interaction between a gas mixture to be analyzed and a stationary phase in the column sufficiently takes place, whereby individual gas components are efficiently separated from the gas mixture, discharged from the column, and detected.Type: GrantFiled: August 4, 2017Date of Patent: February 4, 2020Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATIONInventors: Si-Hyung Lim, Janghyeon Lee
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Publication number: 20180321199Abstract: Disclosed is a separation column for micro gas chromatography, having superior separation performance and including a microchannel formed on a substrate and having a serpentine shape, and bumps formed on the surface of the microchannel, wherein the bumps are alternately disposed to face each other on the surface of the microchannel. In the separation column for micro gas chromatography, a sufficient pressure drop occurs, and thus an M interaction between a gas mixture to be analyzed and a stationary phase in the column sufficiently takes place, whereby individual gas components are efficiently separated from the gas mixture, discharged from the column, and detected.Type: ApplicationFiled: August 4, 2017Publication date: November 8, 2018Inventors: Si-Hyung LIM, Janghyeon Lee
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Patent number: 9737236Abstract: A gas concentration apparatus and a method of operating the gas concentration apparatus are provided. The gas concentration apparatus includes a gas concentration module. The gas concentration module includes a base component having a chamber configured to accommodate carbon foam, a gas inlet connected to one side of the chamber, a gas outlet connected to the other side of the chamber, and a heating device disposed on at least one side of the substrate.Type: GrantFiled: November 3, 2015Date of Patent: August 22, 2017Assignee: Kookmin University Industry Academy Cooperation FoInventors: Si-Hyung Lim, Janghyeon Lee
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Publication number: 20160120442Abstract: A gas concentration apparatus and a method of operating the gas concentration apparatus are provided. The gas concentration apparatus includes a gas concentration module. The gas concentration module includes a base component having a chamber configured to accommodate carbon foam, a gas inlet connected to one side of the chamber, a gas outlet connected to the other side of the chamber, and a heating device disposed on at least one side of the substrate.Type: ApplicationFiled: November 3, 2015Publication date: May 5, 2016Inventors: Si-Hyung LIM, Janghyeon LEE
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Publication number: 20150368824Abstract: Provided are a superhydrophobic/superoleophobic structure and a method of manufacturing the superhydrophobic/superoleophobic structure. The superhydrophobic/superoleophobic structure includes: a roughened primary structure formed on a surface of a metal base; nanopores formed in the roughened primary structure; and a hydrophobic/oleophobic layer formed on a surface of the roughened primary structure. The superhydrophobic/superoleophobic structure makes a large contact angle and a small sliding angle with both aqueous solutions and oily solutions, thereby having a high degree of superhydrophobicity/superoleophobicity. In addition, the superhydrophobic/superoleophobic structure may be formed on large or curved structural objects by the manufacturing method without using a special device.Type: ApplicationFiled: February 6, 2014Publication date: December 24, 2015Applicant: Kookmin University Industry Academy Cooperation FoundationInventors: Si Hyung LIM, Sumit BARTHWAL
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Publication number: 20100233029Abstract: A sensor having a membrane, which is adapted to deflect in response to a change in surface stress. The membrane has a first and a second surface, which includes a first coating layer on the first surface of the membrane, and a second coating layer on the second surface of the membrane. The first coating layer is adapted to couple one or more probe molecules with the membrane.Type: ApplicationFiled: September 12, 2007Publication date: September 16, 2010Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Arun Majumdar, Si-Hyung Lim
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Publication number: 20060133961Abstract: A structure formed from one or more bi-material cantilevers, having a first portion and a second portion positioned end-to-end, wherein the first portion comprises a first material positioned on top of a second material, and wherein the second portion comprises the second material positioned on top of the first material.Type: ApplicationFiled: October 20, 2005Publication date: June 22, 2006Applicant: The Regents of the University of CaliforniaInventors: Si-Hyung Lim, Jongeun Choi, Roberto Horowitz, Arun Majumdar