Patents Assigned to Sunam Co., Ltd.
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Patent number: 10487014Abstract: Equipment for manufacturing ceramic wires is disclosed. The manufacturing equipment can comprise a deposition unit for depositing the ceramic wire on a wire substrate, a loading/unloading unit having a release reel for providing the wire substrate to the deposition unit and a coiling reel for discharging the wire substrate from the deposition unit, and at least one buffer unit arranged between the loading/unloading unit and the deposition unit. The buffer unit may continuously be providing the wire substrate to the deposition unit or continuously winding the wire substrate from the deposition unit when the release reel or the coiling reel is replaced.Type: GrantFiled: September 3, 2014Date of Patent: November 26, 2019Assignee: Sunam Co., Ltd.Inventors: KyuHan Choi, Seung Hyun Moon, Soon Chul Hwang, Hun-Ju Lee
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Patent number: 10262776Abstract: The present invention relates to a superconductor and a method of manufacturing the same. The superconductor comprises: a substrate having a tape shape that extends in a first direction and having surfaces which are defined as a top surface, a bottom surface, and both side surfaces; a superconductive layer positioned on the top surface of the substrate; a first stabilizing layer disposed on the superconductive layer and containing a first metal; a protective layer disposed on the first stabilizing layer and containing a second metal which is different from the first metal; and an first alloy layer disposed between the stabilizing layer and the protective layer and containing the first and second metals.Type: GrantFiled: August 28, 2014Date of Patent: April 16, 2019Assignee: Sunam Co., Ltd.Inventors: Kyu Han Choi, Seung Hyun Moon, Soon Chul Hwang, Hun Ju Lee, Cheol Yeong Jang, Woong Kwon
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Patent number: 9634223Abstract: A super conductor is formed by a process including a first step of forming liquid-phase rare earth-copper-barium oxide by heat treating a superconductor precursor including a rare earth element, barium, and copper, a second step of forming a first superconductor of the rare earth-copper-barium oxide that is epitaxially grown from the liquid-phase rare earth-copper-barium oxide, and a third step of forming a second superconductor of the rare earth-copper-barium oxide by heat treating the first superconductor, wherein the heat treatment of the third step is performed in an atmosphere in which the rare earth-copper-barium oxide has no liquid phase.Type: GrantFiled: April 24, 2015Date of Patent: April 25, 2017Assignees: SUNAM CO., LTD., SNU R&DB FOUNDATIONInventors: Sang Im Yoo, Jung Woo Lee, Soon Mi Choi, Seung Hyun Moon, Hun-Ju Lee, Jae Hun Lee
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Patent number: 9484129Abstract: Provided is a method of manufacturing a superconducting wire. A superconducting tape having an outer surface is provided, a copper layer is formed on the outer surface of the superconducting tape, and first metal tape and second metal tape are respectively attached on a first surface and a second surface of the superconducting tape on which the copper layer is formed.Type: GrantFiled: August 29, 2013Date of Patent: November 1, 2016Assignee: SUNAM CO., LTD.Inventors: Seung Hyun Moon, Woo Suk Chung, Jae Hun Lee, KyuHan Choi, DeaWon Song, ByeongJoo Kim, SangJun Ahn
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Patent number: 9362477Abstract: Provided is a method of forming a ceramic wire. In the method, a ceramic precursor film is deposited on a wire substrate. Then, the wire substrate on which the ceramic precursor film is deposited is treated by heating. For treating the wire substrate by heating, a temperature of the wire substrate and/or an oxygen partial pressure of the wire substrate are controlled such that the ceramic precursor film is in a liquid state and an epitaxy ceramic film is formed from the liquid ceramic precursor film on the wire substrate.Type: GrantFiled: August 3, 2010Date of Patent: June 7, 2016Assignee: SUNAM CO., LTD.Inventors: Seung-Hyun Moon, Hun-Ju Lee, Sang-Im Yoo, Hong-Soo Ha
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Patent number: 8685166Abstract: Provided is an apparatus for continuously fabricating superconducting tapes. An evaporation using drum in dual chamber (EDDC) method is suitable for mass production of high-temperature superconducting tapes. However, the EDDC method is limited to fabrication of high-temperature superconducting tapes having a limited length. In an attempt, high-temperature super-conducting tapes having a sufficiently large length can be fabricated using the EDDC method by releasing a long high-temperature superconducting tape from one reel and winding the long high-temperature superconducting tape around the other reel. In this case, it is important to stably move a high-temperature superconducting tape spirally wound around a drum from one reel to the other reel. Therefore, the provided apparatus uses endless tract belts separately disposed around a drum to stably and continuously move a high-temperature superconducting tape spirally wound around the drum along the centerline of the drum from one reel to the other reel.Type: GrantFiled: March 7, 2008Date of Patent: April 1, 2014Assignees: Korea Advanced Institute of Science and Technology, Sunam Co., Ltd.Inventors: Do-Jun Youm, Ja-Eun Yoo, Byoung-Su Lee, Sang-Moo Lee, Ye-Hyun Jung, Jae-Young Lee
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Patent number: 8236733Abstract: A method for forming a precursor solution for metal organic deposition includes dissolving an additive-free first precursor composed of a rare earth element, a second precursor comprising barium, and a third precursor composed of copper into an acid to form a compound solution; dissolving the compound solution into a solvent to form a pre-precursor solution; and evaporating the solvent from the pre-precursor solution to form a precursor solution having an increased viscosity; wherein at least one of the first precursor, the second precursor, and the third precursor is dissolved into a fluorine-free acid. A method for forming a superconducting thick film from the above precursor solution includes forming a thick film by a one-time coating of the precursor solution having an increased viscosity onto a biaxially-textured base followed by heat treating to form the superconducting thick film having a thickness of about 0.2 ?m or more and having no cracking.Type: GrantFiled: July 20, 2009Date of Patent: August 7, 2012Assignees: Seoul National University Industry Foundation, Sunam Co., Ltd.Inventors: Sang-Im Yoo, Seung-Hyun Moon, Geo-Myung Shin
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Publication number: 20110015079Abstract: The present invention relates to a method of forming a precursor solution for metal organic deposition and a method of forming a superconducting thick film using the same. A first precursor comprising one rare earth element, a second precursor comprising barium, and a third precursor comprising copper are dissolved into acid to form a compound solution, the compound solution is dissolved into solvent to form a pre-precursor solution, and the solvent of the pre-precursor solution is evaporated to form a precursor solution with the increased viscosity. A sufficiently thick film can be formed without any cracking through only one-time coating.Type: ApplicationFiled: July 20, 2009Publication date: January 20, 2011Applicants: Seoul National University Industry Foundation, SUNAM CO., LTD.Inventors: Sang-Im YOO, Seung-Hyun Moon, Geo-Myung Shin
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Publication number: 20100107979Abstract: Provided is an apparatus for continuously fabricating superconducting tapes. An evaporation using drum in dual chamber (EDDC) method is suitable for mass production of high-temperature superconducting tapes. However, the EDDC method is limited to fabrication of high-temperature superconducting tapes having a limited length. In an attempt, high-temperature super-conducting tapes having a sufficiently large length can be fabricated using the EDDC method by releasing a long high-temperature superconducting tape from one reel and winding the long high-temperature superconducting tape around the other reel. In this case, it is important to stably move a high-temperature superconducting tape spirally wound around a drum from one reel to the other reel. Therefore, the provided apparatus uses endless tract belts separately disposed around a drum to stably and continuously move a high-temperature superconducting tape spirally wound around the drum along the centerline of the drum from one reel to the other reel.Type: ApplicationFiled: March 7, 2008Publication date: May 6, 2010Applicants: Korea Advanced Institute of Science and Technology, SUNAM CO., LTD.Inventors: Do-Jun Youm, Ja-Eun Yoo, Byoung-Su Lee, Sang-Moo Lee, Ye-Hyun Jung, Jae-Young Lee