Patents by Inventor Chang-Won Choi
Chang-Won Choi 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).
-
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
-
Publication number: 20240091759Abstract: Disclosed herein is a method of depositing a transition metal single-atom catalyst including preparing a carbon carrier, and depositing a transition metal single-atom catalyst on the carbon carrier, in which the carbon carrier is surface-treated by an oxidation process, and wherein the deposition is carried out by an arc plasma process.Type: ApplicationFiled: September 15, 2023Publication date: March 21, 2024Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jong Min KIM, Sang Hoon KIM, Chang Kyu HWANG, Seung Yong LEE, So Hye CHO, Jae Won CHOI
-
Patent number: 11936417Abstract: The present invention relates to a time-division duplex (TDD) antenna apparatus which can reduce signal loss, and thereby minimize the noise figure (NF) of a system and extend uplink coverage of the system, by separating a transmitter circuit from a receiver circuit of the antenna apparatus, and disposing a low noise amplifier (LNA) of the receiver circuit between a reception antenna and a reception filter of the receiver. A time-division duplex antenna apparatus according to an embodiment of the present invention includes: a transmitter which includes at least one transmission antenna module and transmits a downlink signal through a first path; a receiver which includes at least one reception antenna module and receives an uplink signal through a second path that is separated from the first path without any overlapping portions thereof; and a controller which controls the transmitter and the receiver in a time-division duplex manner.Type: GrantFiled: December 2, 2021Date of Patent: March 19, 2024Assignee: KMW INC.Inventors: Duk Yong Kim, Min Seon Yun, Bae Mook Jeong, Chang Seob Choi, Su Won Lee
-
Publication number: 20240074258Abstract: An electronic device includes a display device, which may be fabricated using a described method. The display device includes a glass substrate including a first surface, a second surface opposite the first surface, and a side surface between the first surface and the second surface, an outermost structure on the first surface of the glass substrate and located adjacent to an edge of one side of the glass substrate, and a display area including a plurality of light emitting areas on the first surface of the glass substrate and located farther from the edge of the one side of the glass substrate than the outermost structure is. A minimum distance from the side surface of the glass substrate to the outermost structure is equal to 130 ?m or less.Type: ApplicationFiled: May 5, 2023Publication date: February 29, 2024Inventors: Wan Jung KIM, Dong Jo KIM, Sun Hwa KIM, Young Ji KIM, Chang Sik KIM, Kyung Ah NAM, Hyo Young MUN, Yong Seung PARK, Yi Seul UM, Dae Sang YUN, Kwan Hee LEE, So Young LEE, Young Hoon LEE, Young Seo CHOI, Sun Young KIM, Ji Won SOHN, Do Young LEE, Seung Hoon LEE
-
Patent number: 11539800Abstract: Disclosed is an electronic device. The electronic device of the present invention comprises: a communication unit; a storage unit for storing a uniform resource locator (URL) designated by an external electronic device and information on specific content provided in the designated URL; and a processor which, when a request for a connection to a designated URL is received from an external electronic device through the communication unit, identifies whether specific content can be provided in the designated URL, and in a case where the specific content cannot be provided, obtains information on another URL that provides content related to the specific content by using stored information, and transmits the obtained information on the another URL to the external electronic device through the communication unit.Type: GrantFiled: August 29, 2018Date of Patent: December 27, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hoon Lee, Young-hyun Kim, Young-in Park, Han-jin Park, Sung-min Lim, Chang-won Choi
-
Publication number: 20220137922Abstract: Provided is a bit-width optimization method for performing floating point to fixed point conversion (FFC) by at least one processor. The bit-width optimization method includes receiving a first floating-point value which represents a minimum value among floating-point values to be converted, receiving a second floating-point value which represents a maximum value among the floating-point values to be converted, receiving a maximum permissible error rate for performing FFC, calculating a minimum bit width of fixed-point notation which satisfies the maximum permissible error rate on the basis of the first floating-point value, the second floating-point value, and the maximum permissible error rate, and calculating a scale factor for FFC on the basis of the second floating-point value and the calculated minimum bit width.Type: ApplicationFiled: September 16, 2021Publication date: May 5, 2022Inventors: Joon Hwan YI, Gi Sik LEE, Chang Won CHOI
-
Patent number: 11187568Abstract: The present invention provides a curb for measuring the flood depth in an urban area, more particularly, to a curb for measuring the flood depth in an urban area, which is configured to demarcate the boundary between a vehicular roadway and a pedestrian sidewalk to measure the flood depth so that the flood depth in the urban area can be measured without the necessity for additional installation of a separate structure. In particular, the present invention has an effect in that an air contact type water level gauge is installed in a first space of a main body to measure the flood depth, i.e., the level of flooding water based on the internal air pressure of a cylindrical tube so that a pressure sensor is not brought into close contact with the flooding water to prevent corrosion of the pressure sensor, thereby reducing the maintenance and repair costs.Type: GrantFiled: November 7, 2018Date of Patent: November 30, 2021Assignee: THE REPUBLIC OF KOREA (NATIONAL DISASTER MANAGEMENT RESEARCH INSTITUTE)Inventors: Han Seung Lee, Jae Seung Joo, Jae Woong Cho, Chang Won Choi, Ho Seon Kang, Chang Yeon Bae, Jeong Geun Hwang
-
Publication number: 20210255022Abstract: The present invention provides a curb for measuring the flood depth in an urban area, more particularly, to a curb for measuring the flood depth in an urban area, which is configured to demarcate the boundary between a vehicular roadway and a pedestrian sidewalk to measure the flood depth so that the flood depth in the urban area can be measured without the necessity for additional installation of a separate structure. In particular, the present invention has an effect in that an air contact type water level gauge is installed in a first space of a main body to measure the flood depth, i.e., the level of flooding water based on the internal air pressure of a cylindrical tube so that a pressure sensor is not brought into close contact with the flooding water to prevent corrosion of the pressure sensor, thereby reducing the maintenance and repair costs.Type: ApplicationFiled: November 7, 2018Publication date: August 19, 2021Inventors: Han Seung LEE, Jae Seung JOO, Jae Woong CHO, Chang Won CHOI, Ho Seon KANG, Chang Yeon BAE, Jeong Geun HWANG
-
Patent number: 11066638Abstract: The present invention relates to bacterial ghosts, and more particularly, to a method of preparing bacterial ghosts from gram-positive bacteria by hydrochloric acid treatment. Specifically, according to the present invention, when gram-positive bacteria were cultured after being treated with a minimum inhibitory concentration (MIC) of hydrochloric acid capable of inhibiting colony formation of gram-positive bacteria, bacterial ghosts were effectively formed. Since the formed bacterial ghosts have no intracellular proteins or DNA while preserving cell wall integrity, the risk of side effects such as secondary infection caused by bacterial growth when the bacterial ghosts are administered to humans is low. Therefore, the bacterial ghosts prepared from gram-positive bacteria according to the method of the present invention may be effectively used as a vaccine or a foreign antigen carrier for preventing or treating gram-positive bacterial infection.Type: GrantFiled: July 13, 2016Date of Patent: July 20, 2021Assignee: PAICHAI UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Chang Won Choi, Seong Mi Ji, Hyun Jung Park, Sung Oh, Nagarajan Vinod, Han Byul No
-
Publication number: 20200344308Abstract: Disclosed is an electronic device. The electronic device of the present invention comprises: a communication unit; a storage unit for storing a uniform resource locator (URL) designated by an external electronic device and information on specific content provided in the designated URL; and a processor which, when a request for a connection to a designated URL is received from an external electronic device through the communication unit, identifies whether specific content can be provided in the designated URL, and in a case where the specific content cannot be provided, obtains information on another URL that provides content related to the specific content by using stored information, and transmits the obtained information on the another URL to the external electronic device through the communication unit.Type: ApplicationFiled: August 29, 2018Publication date: October 29, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hoon Lee, Young-hyun Kim, Young-in Park, Han-jin Park, Sung-min Lim, Chang-won Choi
-
Patent number: 10090135Abstract: A method of forming a coating layer, including preparing hollow inorganic particles, each hollow inorganic particle including a shell surrounding a hollow core; preparing inorganic coating particles of a solid structure; forming a mixture of the hollow inorganic particles and the inorganic coating particles; and spraying the mixture on a surface of a base by a plasma spray coating process.Type: GrantFiled: February 4, 2016Date of Patent: October 2, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Chul-Kyun Seok, Tae-Kyun Kang, Chang-Won Choi
-
Publication number: 20180066225Abstract: The present invention relates to bacterial ghosts, and more particularly, to a method of preparing bacterial ghosts from gram-positive bacteria by hydrochloric acid treatment. Specifically, according to the present invention, when gram-positive bacteria were cultured after being treated with a minimum inhibitory concentration (MIC) of hydrochloric acid capable of inhibiting colony formation of gram-positive bacteria, bacterial ghosts were effectively formed. Since the formed bacterial ghosts have no intracellular proteins or DNA while preserving cell wall integrity, the risk of side effects such as secondary infection caused by bacterial growth when the bacterial ghosts are administered to humans is low. Therefore, the bacterial ghosts prepared from gram-positive bacteria according to the method of the present invention may be effectively used as a vaccine or a foreign antigen carrier for preventing or treating gram-positive bacterial infection.Type: ApplicationFiled: July 13, 2016Publication date: March 8, 2018Applicant: PAICHAI UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Chang Won CHOI, Seong Mi JI, Hyun Jung PARK, Sung OH, Nagarajan VINOD, Han Byul NO
-
Publication number: 20160351376Abstract: A method of forming a coating layer, including preparing hollow inorganic particles, each hollow inorganic particle including a shell surrounding a hollow core; preparing inorganic coating particles of a solid structure; forming a mixture of the hollow inorganic particles and the inorganic coating particles; and spraying the mixture on a surface of a base by a plasma spray coating process.Type: ApplicationFiled: February 4, 2016Publication date: December 1, 2016Inventors: Chul-Kyun SEOK, Tae-Kyun KANG, Chang-Won CHOI
-
Patent number: 9034725Abstract: A method of forming a transistor is provided. An upper portion of a substrate is partially removed forming a trench. An isolation layer partially fills the trench, forming active patterns of the substrate. The isolation layer has a void therein. A photoresist pattern is formed on the active patterns and the isolation layer. The active patterns and the isolation layer are partially removed using the photoresist pattern as an etching mask, thus forming a recess. A plasma treatment process is performed, removing the photoresist pattern and filling the void. A gate insulation layer and a gate electrode fill the recess.Type: GrantFiled: September 18, 2013Date of Patent: May 19, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Doo-Whan Choi, Jung-Bong Yun, Chang-Won Choi
-
Publication number: 20140087533Abstract: A method of forming a transistor is provided. An upper portion of a substrate is partially removed forming a trench. An isolation layer partially fills the trench, forming active patterns of the substrate. The isolation layer has a void therein. A photoresist pattern is formed on the active patterns and the isolation layer. The active patterns and the isolation layer are partially removed using the photoresist pattern as an etching mask, thus forming a recess. A plasma treatment process is performed, removing the photoresist pattern and filling the void. A gate insulation layer and a gate electrode fill the recess.Type: ApplicationFiled: September 18, 2013Publication date: March 27, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: DOO-WHAN CHOI, Jung-Bong Yun, Chang-Won Choi
-
Patent number: 8514800Abstract: A method for transmitting Ethernet data in a Digital Unit (DU) that processes a baseband and interfaces with at least two Radio Frequency (RF) Units (RUs) is provided. The method includes setting location information of two or more Ethernet channels in a first subchannel of a radio frame, allocating the two or more Ethernet channels in second subchannels of the radio frame, using the location information, and transmitting the radio frame to the at least two RUs.Type: GrantFiled: January 19, 2011Date of Patent: August 20, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Keun-Bok Kim, Chang-Won Kim, Han-Ul Moon, Chang-Won Choi
-
Publication number: 20110182255Abstract: A method for transmitting Ethernet data in a Digital Unit (DU) that processes a baseband and interfaces with at least two Radio Frequency (RF) Units (RUs) is provided. The method includes setting location information of two or more Ethernet channels in a first subchannel of a radio frame, allocating the two or more Ethernet channels in second subchannels of the radio frame, using the location information, and transmitting the radio frame to the at least two RUs.Type: ApplicationFiled: January 19, 2011Publication date: July 28, 2011Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Keun-Bok KIM, Chang-Won KIM, Han-Ul MOON, Chang-Won CHOI
-
Patent number: 7241441Abstract: The present invention relates to a novel Pediococcus genus microorganism and more particularly, Pediococcus pentosaceus EROM101 (KCCM-10517) originated from human intestines having immune enhancement, anticancer and antiviral activities and a use thereof. Due to its excellent immune enhancement, anticancer and antimicrobial activities by activating macrophages/spleen cells and inducing gut immunity, the Pediococcus pentosaceus EROM101 of the present invention can be effectively used for the production of various products such as immune enhancement agent, anticancer agent, antimicrobial agent, food additive, intestinal function-controlling agent, live bacterial agent, feed additive and other fermented products.Type: GrantFiled: June 12, 2006Date of Patent: July 10, 2007Assignee: Eromlife Co., Ltd.Inventors: Chang Won Choi, Mi Hyoun Park, Sang Ho Hwang, Suk Gyu Woo, Mi Kyung Song, Jong Jun Im, Sung Gil Hong, Joong Hark Kim, Jung Soon Jang, Hwa Young Kim
-
Publication number: 20060228379Abstract: The present invention relates to a novel Pediococcus genus microorganism and more particularly, Pediococcus pentosaceus EROM101 (KCCM-10517) originated from human intestines having immune enhancement, anticancer and antiviral activities and a use thereof. Due to its excellent immune enhancement, anticancer and antimicrobial activities by activating macrophages/spleen cells and inducing gut immunity, the Pediococcus pentosaceus EROM101 of the present invention can be effectively used for the production of various products such as immune enhancement agent, anticancer agent, antimicrobial agent, food additive, intestinal function-controlling agent, live bacterial agent, feed additive and other fermented products.Type: ApplicationFiled: June 12, 2006Publication date: October 12, 2006Applicant: EROMLIFE CO., LTD.Inventors: Chang Won Choi, Mi Hyoun Park, Sang Ho Hwang, Suk Gyu Woo, Mi Kyung Song, Jong Jun Im, Sung Gil Hong, Joong Hark Kim, Jung Soon Jang, Hwa Young Kim
-
Patent number: 6869621Abstract: The present invention relates to a diet composition comprising brown rice, job's tear, red beans, buckwheat, Italian millet, Indian millet, white beans, black beans, black rice, barley, brown rice sprouts, kale, matured pumpkin (Curcurbia moschata), carrot, Angelica, cabbage, wild Lanceolate root, Lotus root, radish, green radish, mugwort, pine needles, laver, sea mustard, sea tagle, Shiitake mushroom, Reishi mushroom, soy peptide, isolated soy protein, L-carnitine, Hibiscus extract, green tea extract and solomon's seal extract. The composition is useful in reducing body weight and body fat; controlling body shape; and lowering serum cholesterol and neutral fat.Type: GrantFiled: April 15, 2003Date of Patent: March 22, 2005Assignee: Eromlife Co., Ltd.Inventors: Sang Ho Hwang, Hey Eun Chang, Chang Won Choi, Sung Bum Yang, Mi Hyoun Park