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Nak Jin Choi patents

Recent bibliographic sampling of Nak Jin Choi patents listed/published in the public domain by the USPTO (USPTO Patent Application #,Title):



02/19/15 - 20150047417 - Core-shell nanoparticle, method of fabricating the same and gas sensor using the same
The present invention relates to a core-shell nanoparticle, a method of fabricating the same and a gas sensor using the same, more particularly to a core-shell nanoparticle which includes a core including a first metal oxide and a shell including a second metal oxide, the first metal oxide and the...
Inventors: Hyung Ju Park, Nak Jin Choi, Moon Youn Jung, Dae Sik Lee, Hyuntae Kang, Kang Hyun Park (Pusan National University Industry-university Cooperation Foundation)

07/31/14 - 20140208838 - Micro electro mechanical system catalytic combustible gas sensor using porous membrane embedded micro-heater
Provided is a catalytic combustible gas sensor using a porous membrane embedded micro-heater and a micro electro mechanical system (MEMS) technology. The present disclosure provides a gas sensor that is structurally, mechanically, and electrically stable, and has a simple device fabrication process in a MEMS catalytic combustible gas sensor that...
Inventors: Seung Eon Moon, Jae Woo Lee, Hyung-kun Lee, Nak Jin Choi, Woo Seok Yang, Jong Dae Kim (Electronics And Telecommunications Research Institute)

06/26/14 - 20140175570 - Dual-side micro gas sensor and method of fabricating the same
Provided are a dual-side micro gas sensor and a method of fabricating the same. The sensor may include an elastic layer, a heat-generating resistor layer on the elastic layer, an interlayered insulating layer on the heat-generating resistor layer, an upper sensing layer on the interlayered insulating layer, and a lower...
Inventors: Hyung-kun Lee, Seungeon Moon, Nak Jin Choi, Jaewoo Lee

04/18/13 - 20130091929 - Gas sensor and method of manufacturing the same
Disclosed are a gas sensor, and a method of manufacturing and using the same. The method includes: forming a detection material on a heater; coating an encapsulant on the detection material; and heating the heater to remove the encapsulant from the detection material when the gas sensor is operated....
Inventors: Hyung Kun Lee, Woo Seok Yang, Nak Jin Choi, Seung Eon Moon, Jong Dae Kim (Electronics And Telecommunications Research Institute)

03/28/13 - 20130075255 - Mems electrochemical gas sensor
Disclosed is an electrochemical gas sensor using micro electro mechanical systems (MEMS). The MEMS electrochemical gas sensor includes: a substrate a lower central region of which is etched by a predetermined thickness; a first insulation film formed on the substrate; a heat emitting resistance body formed on the first insulation...
Inventors: Seung Eon Moon, Nak Jin Choi, Hyung Kun Lee, Jae Woo Lee, Woo Seok Yang, Jong Dae Kim (Electronics And Telecommunications Research Institute)

08/09/12 - 20120198918 - Microelectromechanical systems type semiconductor gas sensor using microheater having many holes and method for manufacturing the same
Disclosed are an MEMS type semiconductor gas sensor using a microheater having many holes and a method for manufacturing the same. The MEMS type semiconductor gas sensor includes: a substrate of which a central region is etched with a predetermined thickness; a second membrane formed at an upper portion of...
Inventors: Seung Eon Moon, Jae Woo Lee, Nak Jin Choi, Hyung Kun Lee, Woo Seok Yang, Jong Dae Kim (Electronics And Telecommunications Research Institute)

06/14/12 - 20120149560 - Method of manufacturing porous metal oxide
Provided is a method of manufacturing porous metal oxide, the method including: preparing a metal-organic framework (MOF) wherein an ion of a metal to be used as a catalyst is linked to an organic ligand; impregnating the MOF with a precursor solution of metal oxide to be manufactured; and thermally...
Inventors: Hyung-kun Lee, Nak Jin Choi, Seungeon Moon, Woo Seok Yang (Electronics And Telecommunications Research Institute)

06/16/11 - 20110141241 - Module for three-dimensional camera
Provided is a convergence control module for a three-dimensional (3D) camera that can be operated with low power to reduce power consumption, which has been a problem in the 3D camera. A 3D camera module includes at least one camera module, a moving guide for supporting the camera module and...
Inventors: Hyung Kun Lee, Kwang Suk Yang, Nak Jin Choi, Sun Kyung Jung, Kang Ho Park, Jong Dae Kim (Electronics And Telecommunications Research Institute)

06/16/11 - 20110140580 - Metal nonparticle-polymer composites, method of manufacturing the same, and polymer actuator using the same
Metal nanoparticle-polymer composites, a method of manufacturing the same, and a polymer actuator using the same are provided. The method includes synthesizing an organometallic compound as a precursor of metal nanoparticles, preparing a solution mixture containing the organometallic compound and a polymer, and drying and annealing the solution mixture to...
Inventors: Kwang Suk Yang, Nak Jin Choi, Hyung Kun Lee, Sun Kyung Jung, Kang Ho Park, Jong Dae Kim (Electronics And Telecommunications Research Institute)

06/09/11 - 20110133607 - Polymer actuator containing graphene and method of preparing the same
A polymer actuator containing graphene and a method of preparing the same are provided. The polymer actuator includes an ion-conductive polymer membrane, a metal electrode disposed on both surfaces of the ion-conductive polymer membrane, and graphene dispersed within the ion-conductive polymer membrane. As the graphene is dispersed within the polymer...
Inventors: Hyung Kun Lee, Nak Jin Choi, Kwang Suk Yang, Sun Kyung Jung, Kang Ho Park, Jong Dae Kim (Electronics And Telecommunications Research Institute)

Electronics And Telecommunications Research Institute

Archived*
(*May have duplicates - we are upgrading our archive.)

20120149560 - Method of manufacturing porous metal oxide


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The bibliographic references displayed about Nak Jin Choi's patents are for a recent sample of Nak Jin Choi's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Nak Jin Choi filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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