Patents by Inventor Kwang-Deog Jung
Kwang-Deog Jung 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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Patent number: 10322941Abstract: The present invention relates to a method and a process of preparing precipitated calcium carbonate of high purity by extracting calcium ion contained in an alkali ion-containing inorganic material such as mineral, steelmaking slag and waste concrete with the use of an acidic aqueous solution, separating other metal ions from the extracted solution, preparing an alkaline earth metal hydroxide using an alkaline aqueous solution and then contacting the same with carbon dioxide.Type: GrantFiled: February 17, 2017Date of Patent: June 18, 2019Assignee: Korea Institute of Science and TechnologyInventors: Kwang Deog Jung, Heung Yong Ha, Jun Woo Oh, Ho Yong Jo
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Publication number: 20170240432Abstract: The present invention relates to a method and a process of preparing precipitated calcium carbonate of high purity by extracting calcium ion contained in an alkali ion-containing inorganic material such as mineral, steelmaking slag and waste concrete with the use of an acidic aqueous solution, separating other metal ions from the extracted solution, preparing an alkaline earth metal hydroxide using an alkaline aqueous solution and then contacting the same with carbon dioxide.Type: ApplicationFiled: February 17, 2017Publication date: August 24, 2017Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kwang Deog JUNG, Heung Yong HA, Jun Woo OH, Ho Yong JO
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Publication number: 20150183653Abstract: The present invention relates to a method for preparing a carbonate of an alkali ion using an electrolysis system, more particularly to an improved method for preparing a carbonate of an alkali ion, including eluting an alkali ion from an inorganic material containing the alkali ion and converting the eluted alkali ion to a carbonate, using an electrolysis system which generates an eluting agent and a quick precipitating agent used for the elution of the alkali ion and the conversion to the carbonate at the same time.Type: ApplicationFiled: December 30, 2014Publication date: July 2, 2015Inventors: Kwang Deog JUNG, Heung Yong HA, Jun Woo OH, Sung Min LEE, Ho Yong JO
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Patent number: 8617642Abstract: A preparation method of a CIS-based or CIGS-based thin film for a light absorption layer of a solar cell, which uses a paste prepared by mixing precursors of Cu, In, Se, and optional Ga in a solvent, minimizes the raw material loss, does not produce a toxic gas during the process, and is suitable for producing a large scale film at a low production cost.Type: GrantFiled: October 30, 2008Date of Patent: December 31, 2013Assignee: Korea Institute of Science and TechnologyInventors: Oh-shim Joo, Byoung Koun Min, Kwang Deog Jung, Jun-haeng Lee
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Patent number: 8551220Abstract: A sulfur dioxide absorbent comprising an ionic liquid comprised of alkyl ether-substituted imidazolium cation and an alkanesulfonate anion moieties possesses a high thermal/chemical stability, high SO2 absorption rate and low regeneration temperature, and is useful for an effective separation of SO2 from a combustion exhaust gas mixture or the like.Type: GrantFiled: April 20, 2011Date of Patent: October 8, 2013Assignee: Korea Institute of Science and TechnologyInventors: Kwang Deog Jung, Hong Gon Kim, Chang Soo Kim, Hoon Sik Kim, Minserk Cheong, Sung Yun Hong
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Publication number: 20120042778Abstract: A sulfur dioxide absorbent comprising an ionic liquid comprised of alkyl ether-substituted imidazolium cation and an alkanesulfonate anion moieties possesses a high thermal/chemical stability, high SO2 absorption rate and low regeneration temperature, and is useful for an effective separation of SO2 from a combustion exhaust gas mixture or the like.Type: ApplicationFiled: April 20, 2011Publication date: February 23, 2012Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kwang Deog JUNG, Hong Gon KIM, Chang Soo KIM, Hoon Sik KIM, Minserk CHEONG, Sung Yun HONG
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Publication number: 20110177356Abstract: The present invention relates to a method for preparing Pt thin films using electrospray deposition, more specifically a method for preparing platinum thin film using electrospray deposition, including dissolving a platinum (Pt) precursor in ethanol to prepare a precursor solution for spraying (Step 1); applying a DC voltage between a substrate holder and a nozzle of an electrospraying device and then spraying the precursor solution prepared in Step 1 on a substrate which is maintained at about 100° C. to about 180° C. to form a platinum thin film (Step 2); and subjecting the platinum thin film formed in Step 2 to a heat treatment (Step 3).Type: ApplicationFiled: August 3, 2010Publication date: July 21, 2011Applicant: Korea Institute of Science and TechnologyInventors: Oh Shim Joo, Kwang Deog Jung, Jyotiprakash B. Yadav
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Patent number: 7749475Abstract: The present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle. More specifically, the present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle using an ionic liquid under a specific condition. When compared with the conventional amine-based absorbent, the use of the ionic liquid enables continuous absorption and stripping of SO2 even at high temperature, and enables a reversible absorption of SO2 without loss, decomposition or degradation of a solvent due to good chemical stability, thereby enabling separation and recycling of pure SO2 from a gaseous mixture in the IS cycle.Type: GrantFiled: December 21, 2007Date of Patent: July 6, 2010Assignee: Korea Institute of Science and TechnologyInventors: Chang Soo Kim, Gyeong Taek Gong, Kye Sang Yoo, Byung Gwon Lee, Kwang Deog Jung, Hong Gon Kim, Byoung Sung Ahn, Oh Shim Joo
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Publication number: 20100015040Abstract: The present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle. More specifically, the present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle using an ionic liquid under a specific condition. When compared with the conventional amine-based absorbent, the use of the ionic liquid enables continuous absorption and stripping of SO2 even at high temperature, and enables a reversible absorption of SO2 without loss, decomposition or degradation of a solvent due to good chemical stability, thereby enabling separation and recycling of pure SO2 from a gaseous mixture in the IS cycle.Type: ApplicationFiled: December 21, 2007Publication date: January 21, 2010Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chang Soo Kim, Gyeong Taek Gong, Kye Sang Yoo, Byung Gwon Lee, Kwang Deog Jung, Hong Gon Kim, Byoung Sung Ahn, Oh Shim Joo
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Publication number: 20090214763Abstract: A preparation method of a CIS-based or CIGS-based thin film for a light absorption layer of a solar cell, which uses a paste prepared by mixing precursors of Cu, In, Se, and optional Ga in a solvent, minimizes the raw material loss, does not produce a toxic gas during the process, and is suitable for producing a large scale film at a low production cost.Type: ApplicationFiled: October 30, 2008Publication date: August 27, 2009Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Oh-shim JOO, Byoung Koun MIN, Kwang Deog JUNG, Jun-haeng LEE
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Patent number: 7435759Abstract: A method for producing DME, which comprises separating a CO2 rich stream from a crude product stream containing DME and CO2 obtained by a DME synthesis from a feed syn gas; introducing the CO2 rich stream to a reverse water gas shift (RWGS) reactor wherein it is reacted with hydrogen in the presence of an oxide catalyst of either ZnO or NiO to provide a CO rich stream, and recycling the CO rich stream to the step of the methanol synthesis step.Type: GrantFiled: January 29, 2004Date of Patent: October 14, 2008Assignee: Korea Institute of Science and TechnologyInventors: Kwang-Deog Jung, Oh-Shim Joo, Jun-Woo Oh
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Publication number: 20080131762Abstract: The present invention provides a photoelectrochemical (PEC) system for the production of hydrogen from water, which comprises (A) an electrolytic bath comprising an electrode for catalytic oxidation, an electrode for catalytic reduction, an ion separation film disposed between the two electrodes, and an aqueous electrolyte solution into which the two electrodes and the ion separation film are immersed, and (B) a photoelectrode positioned at the outside of the electrolytic bath and electrically connected to the two electrodes. The inventive PEC system is characterized by disposing a photoelectrode at the position which does not contact aqueous electrolyte solution, thus preventing the lowering of the photoelectrode activities, and maximizing the hydrogen production efficiency.Type: ApplicationFiled: March 28, 2007Publication date: June 5, 2008Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Oh-shim Joo, Kwang Deog Jung, Byoung Koun Min, Soo Hang Kim, Jun Woo Oh
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Publication number: 20070248518Abstract: A highly efficient desulfurization method for removing a hydrogen sulfide and a sulfur dioxide simultaneously comprises the step of contacting a gas containing the hydrogen sulfide and the sulfur dioxide with water, or an aqueous solution containing a first heterogeneous catalyst for desulfurization to oxidize the hydrogen sulfide with the sulfur dioxide. 3˜5% sulfur-containing tail gas exhausted from, especially, Claus Process can be treated at a high efficiency of over 99%.Type: ApplicationFiled: June 8, 2005Publication date: October 25, 2007Applicant: KIREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kwang-Deog Jung, Oh-Shim Joo, Jun-Woo Oh, Eun-Gu Lee, Kyungil Choi
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Publication number: 20070142482Abstract: The present invention is directed to a method for producing DME, which comprises separating a CO2 rich stream from a crude product stream containing DME and CO2 obtained by a DME synthesis from a feed syn gas; introducing the CO2 rich stream to a reverse water gas shift (RWGS) reactor wherein it is reacted with hydrogen in the presence of a catalyst to provide a CO rich stream, and recycling the CO rich stream to the step of the methanol synthesis step. In accordance with the present invention, a large amount of carbon dioxide gas generated during the preparing process of DME is effectively re-used, thus increasing the yield of DME and lowering the amount of carbon dioxide discharged.Type: ApplicationFiled: January 29, 2004Publication date: June 21, 2007Inventors: Kwang-Deog Jung, Oh-Shim Joo, Jun-Woo Oh
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Patent number: 7232784Abstract: Disclosed are a kenyaite catalyst containing a metal oxide between layers of a layered silicate having kenyaite structure, a method for preparing the same, and a method for preparing ?-caprolactam from cyclohexanone oxime by applying the catalyst to gas phase Beckmann rearrangement.Type: GrantFiled: December 23, 2004Date of Patent: June 19, 2007Assignee: Korea Institute of Science and TechnologyInventors: Sun-Jin Kim, Oh-Shim Joo, Kwang-Deog Jung, Min-Jo Park
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Publication number: 20060047113Abstract: Disclosed are a kenyaite catalyst containing a metal oxide between layers of a layered silicate having kenyaite structure, a method for preparing the same, and a method for preparing ?-caprolactam from cyclohexanone oxime by applying the catalyst to gas phase Beckmann rearrangement.Type: ApplicationFiled: December 23, 2004Publication date: March 2, 2006Applicant: Korea Institute of Science and TechnologyInventors: Sun Jin Kim, Oh-Shim Joo, Kwang-Deog Jung, Min Jo Park
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Patent number: 6503471Abstract: Malodorous gases such as amines, organosulfur compounds, hydrogen sulfide, styrene and aldehydes are economically and efficiently treated at ambient temperature and pressure by a catalytic absorption and oxidation process comprising: (a) bringing the malodorous gases into contact with a scrubbing water containing a heterogeneous catalyst to absorb the malodorous components catalytically, and (b) subjecting the resulting solution containing the malodorous components to a catalytic oxidation by contacting it with an oxidizing agent such as hydrogen peroxide, ozone, oxygen, air, nitrogen oxides, and NaOCl in the presence of the catalyst at a temperature ranging from 0 to 100 □ under an ambient pressure, the heterogeneous catalyst comprising an active metal element selected from alkali, alkaline earth and transition metals, and an oxide support material.Type: GrantFiled: October 6, 2000Date of Patent: January 7, 2003Assignee: Korea Institute of Science & TechnologyInventors: Seong-Hwan Han, Kwang-Deog Jung, Oh-Shim Joo, Seong-Hoon Cho, Jun-Woo Oh
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Publication number: 20020168525Abstract: The present invention relates to carbon nanotube Resistance Inductance Capacitance (hereinafter referred as to “RLC”) circuits. More particularly, the present invention is to provide the carbon nanotube prepared by chemical vapor deposition (hereinafter referred as to “CVD”) on a surface of inorganic substrate to have advantages in: (i) its use for resistance, inductance and capacitance elements, (ii) the formation of micro circuits loaded with RLC characters and different inductor from the inductor used ferrite core and coil, (iii) heat resistance and impact resistance because it is made of carbon/inorganic composite materials, and (iv) the formation of nanotubes unlike conventional chip inductor.Type: ApplicationFiled: August 1, 2001Publication date: November 14, 2002Inventors: Sung-Hwan Han, Oh-Shim Joo, Kwang-Deog Jung
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Patent number: 6461522Abstract: Wastewater streams containing various pollutants are economically and efficiently treated at ambient temperature and pressure with hydrogen peroxide, oxygen or ozone in the presence of a heterogeneous catalyst comprising an element selected from the group consisting of Ni, Ru, Co, Fe, Cu, Mn, Li and a mixture thereof supported on a metal oxide selected from the group consisting of MgO, CaO, SnO2, PbO and a mixture thereof.Type: GrantFiled: February 17, 2000Date of Patent: October 8, 2002Assignee: Korea Institute of Science and TechnologyInventors: Dae-Won Pak, Won-Seok Chang, Sung-Jin Uhm, Seong-Hwan Han, Kwang-Deog Jung, Seong-Hoon Cho