Patents by Inventor Duck-jong Kim
Duck-jong Kim 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: 20230172618Abstract: A surgical handpiece comprises, in the form of a magazine, electronic components composed of a printed circuit board mounted on a hand grip part of the handpiece and various sensor modules provided on the printed circuit board, and the surgical handpiece is easy to maintain since the repair thereof is completed by replacing a magazine. The surgical handpiece comprises a pistol-shaped housing composed of the hand grip and a motor housing integrally formed on the top of the hand grip, wherein the hand grip comprises a grip body and a magazine groove which is formed inside the grip body and into which the magazine-type electronic component module is inserted and mounted.Type: ApplicationFiled: August 30, 2021Publication date: June 8, 2023Inventors: Ki Jung CHON, Heon Hang LIM, Duck Jong KIM, Jae Hong JEON, Ku Young JEON, Jae Chul LEE
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Patent number: 10143940Abstract: A nanoparticle separating apparatus that can separate nanoparticles from impurities in a nanoparticle dispersion, and a nanoparticle separating method using the same are disclosed. The nanoparticle separating apparatus according to an exemplary embodiment of the present invention includes: a body portion having an inlet hole into which a dispersion flows formed in one side thereof, an outlet hole through which the waste solution from which nanoparticles are separated flows formed in the other side, and a hollow channel formed between the inlet hole o and the outlet hole; a first electrode and a second electrode, each having a porous structure where a plurality of pores are formed, and at least one pair of the first and second electrodes being provided in the channel; and a power supply applying voltages, each having a different polarity, to the first electrode or to the second electrode.Type: GrantFiled: November 27, 2015Date of Patent: December 4, 2018Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Duck Jong Kim, So Hee Jeong, Won Seok Chang, Chang-Su Woo, Ho Sub Lim, Ju Young Woo
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Patent number: 9517936Abstract: A quantum dot stabilized by a halogen salt includes a compound of Group 13 and Group 15, a compound of Group 12 and Group 16 or a compound of Group 14 and Group 16. The quantum dot has a crystalline structure and at least a portion of a surface of the quantum dot is combined with a halogen salt. Thus, the quantum dot has a high stability in an air.Type: GrantFiled: April 3, 2015Date of Patent: December 13, 2016Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Sohee Jeong, Ju Young Woo, Doh Chang Lee, Won Seok Chang, Duck Jong Kim
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Publication number: 20160220924Abstract: A nanoparticle separating apparatus that can separate nanoparticles from impurities in a nanoparticle dispersion, and a nanoparticle separating method using the same are disclosed. A nanoparticle separating apparatus according to an exemplary embodiment of the present invention includes: a body portion having an inlet hole into which a dispersion flows formed in one side thereof, an outlet hole through which the waste solution from which nanoparticles are separated flows formed in the other side, and a hollow channel formed between the inlet hole and the outlet hole; a first electrode and a second electrode, each having a porous structure where a plurality of pores are formed, and at least one pair of the first and second electrodes being provided in the channel; and a power supply applying voltages, each having a different polarity, to the first electrode or to the second electrode.Type: ApplicationFiled: November 27, 2015Publication date: August 4, 2016Inventors: Duck Jong KIM, So Hee JEONG, Won Seok CHANG, Chang-Su WOO, Ho Sub LIM, Ju Young Woo
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Publication number: 20150291422Abstract: A quantum dot stabilized by a halogen salt includes a compound of Group 13 and Group 15, a compound of Group 12 and Group 16 or a compound of Group 14 and Group 16. The quantum dot has a crystalline structure and at least a portion of a surface of the quantum dot is combined with a halogen salt. Thus, the quantum dot has a high stability in an air.Type: ApplicationFiled: April 3, 2015Publication date: October 15, 2015Inventors: Sohee JEONG, Ju Young WOO, Doh Chang LEE, Won Seok CHANG, Duck Jong KIM
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Patent number: 9128074Abstract: A detection method using colorimetric analysis of the present invention includes: providing a first solution in which two materials selected from metal nanoparticles, an oxidizing agent, and chloride ions are mixed; providing a second solution including one other material that is not included in the first solution among the metal nanoparticles, the oxidizing agent, and the chloride ions; preparing a mixture solution by mixing the first solution and the second solution; and testing and measuring a color change of the mixture solution.Type: GrantFiled: April 2, 2012Date of Patent: September 8, 2015Assignee: Korean Institute of Machinery & MaterialsInventors: ChangSoo Han, Duck Jong Kim, Tripathy Suraj Kumar
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Patent number: 9097694Abstract: A detection method using colorimetric analysis of the present invention includes: providing a first solution in which two materials selected from metal nanoparticles, an oxidizing agent, and chloride ions are mixed; providing a second solution including one other material that is not included in the first solution among the metal nanoparticles, the oxidizing agent, and the chloride ions; preparing a mixture solution by mixing the first solution and the second solution; and testing and measuring a color change of the mixture solution.Type: GrantFiled: April 2, 2012Date of Patent: August 4, 2015Assignee: Korean Institute of Machinery & MaterialsInventors: ChangSoo Han, Duck Jong Kim, Tripathy Suraj Kumar
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Publication number: 20140199773Abstract: A detection method using colorimetric analysis of the present invention includes: providing a first solution in which two materials selected from metal nanoparticles, an oxidizing agent, and chloride ions are mixed; providing a second solution including one other material that is not included in the first solution among the metal nanoparticles, the oxidizing agent, and the chloride ions; preparing a mixture solution by mixing the first solution and the second solution; and testing and measuring a color change of the mixture solution.Type: ApplicationFiled: April 2, 2012Publication date: July 17, 2014Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: ChangSoo Han, Duck Jong Kim, Tripathy Suraj Kumar
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Patent number: 7866954Abstract: Disclosed herein are a valve and a micro fluid pump having the same. The valve is mounted in a micro fluid pump having a capillary tube, to which a gas supply unit and a fluid transfer pipe are connected, for controlling the introduction and the discharge of fluid. The valve includes a discharge pipe filled with liquid such that the discharge pipe has a predetermined resistance pressure and constructed in a structure in which one end of the discharge pipe is connected to the capillary tube such that the discharge pipe communicates with the interior of the capillary tube, and the other end of the discharge pipe is open, thereby allowing gas out of the capillary tube through the discharge pipe when a gas pressure in the capillary tube exceeds the resistance pressure of the discharge pipe.Type: GrantFiled: December 29, 2006Date of Patent: January 11, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Duck-jong Kim, Yun-wook Hwang, Yu-chang Kim, Sang-jin Park, Pil-woo Heo, Eui-soo Yoon, Deuk-yong Koh
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Publication number: 20080075605Abstract: Disclosed herein are a valve and a micro fluid pump having the same. The valve is mounted in a micro fluid pump having a capillary tube, to which a gas supply unit and a fluid transfer pipe are connected, for controlling the introduction and the discharge of fluid. The valve includes a discharge pipe filled with liquid such that the discharge pipe has a predetermined resistance pressure and constructed in a structure in which one end of the discharge pipe is connected to the capillary tube such that the discharge pipe communicates with the interior of the capillary tube, and the other end of the discharge pipe is open, thereby allowing gas out of the capillary tube through the discharge pipe when a gas pressure in the capillary tube exceeds the resistance pressure of the discharge pipe.Type: ApplicationFiled: December 29, 2006Publication date: March 27, 2008Applicant: KOREAN INSTITUTE OF MACHINERY & MATERIALSInventors: Duck-jong Kim, Yun-wook Hwang, Yu-chang Kim, Sang-jin Park, Pil-woo Heo, Eui-soo Yoon, Deuk-yong Koh
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Publication number: 20080047892Abstract: Disclosed is a portable micro blood separator, which has a blood separator including a main body including an upper substrate and a lower substrate; a blood introduction unit formed at one side of the main body for allowing blood to be introduced into the separator; a blood inflow unit including an inflow groove formed in the lower substrate, through which the blood introduced by the blood introduction unit flows; and a plasma extraction unit including extraction spaces extended from the blood inflow unit and having a height lower than that of the inflow groove of the blood inflow unit so that plasma can be separated from the blood flowing into the blood inflow unit, so as to separate the plasma and corpuscles from the blood and analyze ingredients in the separated plasma.Type: ApplicationFiled: March 26, 2007Publication date: February 28, 2008Applicants: Korea Institute of Machinery & Materials, All Medicus Co., Ltd.Inventors: Duck-jong Kim, Yun-wook Hwang, Yu-chang Kim, Sang-jin Park, Pil-woo Heo, Eui-soo Yoon, Yon-chan Ahn, Jun-oh Ryu