Patents by Inventor Chang-Won Jang
Chang-Won Jang 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: 20240103362Abstract: Disclosed herein is a method of printing a nanostructure including: preparing a template substrate on which a pattern is formed; forming a replica pattern having an inverse phase of the pattern by coating a polymer thin film on an upper portion of the template substrate, adhering a thermal release tape to an upper portion of the polymer thin film, and separating the polymer thin film from the template substrate; forming a nanostructure by depositing a functional material on the replica pattern; and printing the nanostructure deposited on the replica pattern to a substrate by positioning the nanostructure on the substrate, applying heat and pressure to the nanostructure, and weakening an adhesive force between the thermal release tape and the replica pattern by the heat.Type: ApplicationFiled: September 19, 2023Publication date: March 28, 2024Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jong Min KIM, Seung Yong LEE, So Hye CHO, Ho Seong JANG, Jae Won CHOI, Chang Kyu HWANG
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Patent number: 11936052Abstract: Provided is a fluorine-doped tin oxide support, a platinum catalyst for a fuel cell having the same, and a method for producing the same. Also described is a high electrical conductivity and electrochemical durability by doping fluorine to the tin oxide-based support through an electrospinning process. Thus, while resolving a degradation issue of the carbon support in the conventional commercially available platinum/carbon (Pt/C) catalyst, what is designed is to minimize an electrochemical elution of dopant or tin, which is a limitation of the tin oxide support itself and has excellent performance as a catalyst for a fuel cell.Type: GrantFiled: April 16, 2020Date of Patent: March 19, 2024Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jin Young Kim, Jong Min Kim, Hee-Young Park, So Young Lee, Hyun Seo Park, Sung Jong Yoo, Jong Hyun Jang, Hyoung-Juhn Kim, Chang Won Yoon, Jonghee Han
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Publication number: 20240066092Abstract: Provided are a curcumin nanoparticle complex having a modified particle surface and a method for preparing same. A curcumin nanoparticle complex includes curcumin and phospholipids and has a particle size of less than 1000 nm. A first coating layer containing a cationic material and/or a second coating layer containing an anionic material can be further added.Type: ApplicationFiled: September 1, 2023Publication date: February 29, 2024Applicant: BINOTEC CO., LTD.Inventors: Gi Hyun Jang, Chang Hwan Seok, Ji Won Shin, Yun Geum Sang Gwak, Yu Mi Kim
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Patent number: 11487153Abstract: A backlight device includes: a light source to emit coherent light; an optical path difference generator on the light source, the optical path difference generator including an incident surface and a plurality of light emitting surfaces, the light emitting surfaces being parallel to the incident surface and having different separation distances from the incident surface; a light condenser on the optical path difference generator; a diffuser on the light condenser; and a collimator on the diffuser.Type: GrantFiled: August 24, 2020Date of Patent: November 1, 2022Assignees: Samsung Display Co., Ltd., Seoul National University R&DB FoundationInventors: Sang Ho Kim, Duk Ho Lee, Young Chan Kim, Ki Seung Bang, Chang Won Jang, Ji Won Lee, Cheon Myeong Lee, Byoung Ho Lee
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Patent number: 11357283Abstract: Provided is a ventilated shoe. The shoe includes an upper. An outsole has an upper edge end provided on an upper sole part, an air chamber provided inside the upper edge end, and an ascending and descending edge surface provided on an outer edge of a lower sole part in such a way as to be inclined outwards and upwards from a bottom surface, the outer edge of the lower sole part being provided under the upper edge end to be opposite thereto. An insole is secured to the upper edge end to cover a top of the air chamber, with a plurality of ventilation holes being formed in a front portion thereof. A backflow prevention valve prevents outside air supplied to the air chamber from flowing backwards. An air inlet pipe supplies the outside air to the backflow prevention valve.Type: GrantFiled: September 27, 2013Date of Patent: June 14, 2022Inventors: Chang-Won Jang, Jun-Yun Won
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Publication number: 20210088849Abstract: A backlight device includes: a light source to emit coherent light; an optical path difference generator on the light source, the optical path difference generator including an incident surface and a plurality of light emitting surfaces, the light emitting surfaces being parallel to the incident surface and having different separation distances from the incident surface; a light condenser on the optical path difference generator; a diffuser on the light condenser; and a collimator on the diffuser.Type: ApplicationFiled: August 24, 2020Publication date: March 25, 2021Inventors: Sang Ho KIM, Duk Ho LEE, Young Chan KIM, Ki Seung BANG, Chang Won JANG, Ji Won LEE, Cheon Myeong LEE, Byoung Ho LEE
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Patent number: 10311615Abstract: A device and method for providing an augmented reality (AR) image are provided. The device includes a display configured to alternately display a first image including an object at an object position and a second image including a mask for blocking transmission of light incident on the display at the object position; a processor configured to determine a time period and control the display to alternately display the first image and the second image during the time period; and a polarization switch configured alternately polarize the light incident on the display at a switching period determined based on the time period.Type: GrantFiled: June 14, 2017Date of Patent: June 4, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Jae-woo Ko, Byoung-ho Lee, Byung-hyo Lee, Ki-seung Bang, Chang-won Jang
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Publication number: 20180089871Abstract: A device and method for providing an augmented reality (AR) image are provided. The device includes a display configured to alternately display a first image including an object at an object position and a second image including a mask for blocking transmission of light incident on the display at the object position; a processor configured to determine a time period and control the display to alternately display the first image and the second image during the time period; and a polarization switch configured alternately polarize the light incident on the display at a switching period determined based on the time period.Type: ApplicationFiled: June 14, 2017Publication date: March 29, 2018Applicants: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Jae-woo KO, Byoung-ho LEE, Byung-hyo LEE, Ki-seung BANG, Chang-won JANG
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Patent number: 9843375Abstract: An electronic device is provided. The electronic device includes a first antenna, a second antenna, a transmission/reception path unit, a first reception path unit, a second reception path unit including a low noise amplifier (LNA), a signal path selection unit configured to connect each of the first antenna and the second antenna to the transmission/reception path unit, the first reception path unit, or the second reception path unit, and a radio frequency integrated circuit (RFIC) module or a processor including the RFIC module configured to control the signal path selection unit to have a first state in which the first antenna is connected to the transmission/reception path unit and the second antenna is connected to the second reception path unit or control the signal path selection unit to have a second state in which the first antenna is connected to the first reception path unit and the second antenna is connected to the transmission/reception path unit.Type: GrantFiled: June 9, 2016Date of Patent: December 12, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Soo Kim, Min-Chull Paik, Jong-In Lee, Chang-Won Jang, Seung-Min Lee, Jae-Min Cha
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Publication number: 20160365909Abstract: An electronic device is provided. The electronic device includes a first antenna, a second antenna, a transmission/reception path unit, a first reception path unit, a second reception path unit including a low noise amplifier (LNA), a signal path selection unit configured to connect each of the first antenna and the second antenna to the transmission/reception path unit, the first reception path unit, or the second reception path unit, and a radio frequency integrated circuit (RFIC) module or a processor including the RFIC module configured to control the signal path selection unit to have a first state in which the first antenna is connected to the transmission/reception path unit and the second antenna is connected to the second reception path unit or control the signal path selection unit to have a second state in which the first antenna is connected to the first reception path unit and the second antenna is connected to the transmission/reception path unit.Type: ApplicationFiled: June 9, 2016Publication date: December 15, 2016Inventors: Sung-Soo KIM, Min-Chull PAIK, Jong-In LEE, Chang-Won JANG, Seung-Min LEE, Jae-Min CHA
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Publication number: 20150201700Abstract: Provided is a ventilated shoe. The shoe includes an upper. An outsole has an upper edge end provided on an upper sole part, an air chamber provided inside the upper edge end, and an ascending and descending edge surface provided on an outer edge of a lower sole part in such a way as to be inclined outwards and upwards from a bottom surface, the outer edge of the lower sole part being provided under the upper edge end to be opposite thereto. An insole is secured to the upper edge end to cover a top of the air chamber, with a plurality of ventilation holes being formed in a front portion thereof. A backflow prevention valve prevents outside air supplied to the air chamber from flowing backwards. An air inlet pipe supplies the outside air to the backflow prevention valve.Type: ApplicationFiled: September 27, 2013Publication date: July 23, 2015Inventors: Chang-Won JANG, Jun-Yun Won
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Patent number: 8384603Abstract: A Printed Circuit Board (PCB) and an embedded antenna for a mobile communication terminal having double feed points using the same are provided. The embedded antenna includes a PCB having an emission carrier. The emission carrier includes first and second feed points connected to a feed wiring layer of the PCB, as well as an emission pattern to which the feed points are connected. The feed wiring layer supplies a current to one of the feed points, and has a connection wiring for supplying a current from the feed point to the other feed point. Through overlapping between a first resonance spot created by the first feed point, and a second resonance spot, which branches off from the first feed point and connects to the PCB, the frequency bandwidth can be expanded, which accommodates any frequency shift minimizes deterioration resulting from the influence of human bodies, and maintains stable antenna characteristics.Type: GrantFiled: November 5, 2007Date of Patent: February 26, 2013Assignee: Samsung Electronics Co., LtdInventors: Chi Sun Kim, Chang Won Jang
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Publication number: 20080174511Abstract: A Printed Circuit Board (PCB) and an embedded antenna for a mobile communication terminal having double feed points using the same are provided. The embedded antenna includes a PCB having an emission carrier. The emission carrier includes first and second feed points connected to a feed wiring layer of the PCB, as well as an emission pattern to which the feed points are connected. The feed wiring layer supplies a current to one of the feed points, and has a connection wiring for supplying a current from the feed point to the other feed point. Through overlapping between a first resonance spot created by the first feed point, and a second resonance spot, which branches off from the first feed point and connects to the PCB, the frequency bandwidth can be expanded, which accommodates any frequency shift minimizes deterioration resulting from the influence of human bodies, and maintains stable antenna characteristics.Type: ApplicationFiled: November 5, 2007Publication date: July 24, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chi Sun KIM, Chang Won Jang
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Patent number: 7292193Abstract: Disclosed is a method for tuning an antenna module in a portable wireless terminal and built-in antenna module using the same. According to the method and built-in antenna module, the built-in antenna module is provided with a plate type radiator defining a slot with a predetermined width to form a pattern. The plate type radiator is provided with downwardly protruded feed and ground pins that are spaced apart, and at least one passive element having a predetermined value is connected to the radiator to optimally tune the antenna module. Therefore, various frequency response properties of the built-in antenna module can be attained by altering such a passive element as a variable design parameter without changing the radiator. Also, this construction can take the place of a matching circuit in a signal line, such that radiation performance can be increased without insertion loss.Type: GrantFiled: October 12, 2005Date of Patent: November 6, 2007Assignee: Samsung Electronics Co., Ltd.Inventor: Chang-Won Jang
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Publication number: 20060139218Abstract: Disclosed is a method for tuning an antenna module in a portable wireless terminal and built-in antenna module using the same. According to the method and built-in antenna module, the built-in antenna module is provided with a plate type radiator defining a slot with a predetermined width to form a pattern. The plate type radiator is provided with downwardly protruded feed and ground pins that are spaced apart, and at least one passive element having a predetermined value is connected to the radiator to optimally tune the antenna module. Therefore, various frequency response properties of the built-in antenna module can be attained by altering such a passive element as a variable design parameter without changing the radiator. Also, this construction can take the place of a matching circuit in a signal line, such that radiation performance can be increased without insertion loss.Type: ApplicationFiled: October 12, 2005Publication date: June 29, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Chang-Won Jang
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Publication number: 20040077389Abstract: An antenna device for a portable wireless terminal that comprises an antenna housing including a built-in helical antenna and having a perforating hole defined in a longitudinal direction of the helical antenna; a whip antenna slidably retractable into and extendable from a terminal main body through the perforating hole; a stopper formed on a bottom of the whip antenna to provide a connection point and restrict movement of the whip antenna; and an antenna dummy extending from the stopper along the outer surface of the whip antenna in the longitudinal direction of the whip antenna. The antenna dummy is positioned in the helical antenna so as to face the helical antenna when the whip antenna is fully extended.Type: ApplicationFiled: March 11, 2003Publication date: April 22, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Chang-Won Jang