Patents by Inventor Won-Tae Cho

Won-Tae Cho 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).

  • Patent number: 11970566
    Abstract: Disclosed is a method of manufacturing a polyurethane filter foam having excellent air permeability, elasticity, and restoring force. In the method of manufacturing the polyurethane filter foam, the cell size of the filter foam is made regular by controlling the pressure by adjusting the diameter of the foaming head of a foaming machine, rather than adding a cell opener, cell irregularity caused by poor dispersion of the cell opener is alleviated, and air permeability, porosity, and compression set are excellent.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: April 30, 2024
    Assignees: HYUNDAI TRANSYS INC., CHIN YANG CO., LTD.
    Inventors: Jae Yong Ko, Seung Keon Woo, Young Tae Cho, Won Sug Choi, Sung Yoon Lee, Jae Kwang Lee, Jun Ho Song
  • Patent number: 11961775
    Abstract: In one example, a semiconductor device can comprise a substrate, a device stack, first and second internal interconnects, and an encapsulant. The substrate can comprise a first and second substrate sides opposite each other, a substrate outer sidewall between the first substrate side and the second substrate side, and a substrate inner sidewall defining a cavity between the first substrate side and the second substrate side. The device stack can be in the cavity and can comprise a first electronic device, and a second electronic device stacked on the first electronic device. The first internal interconnect can be coupled to the substrate and the device stack. The encapsulant can cover the substrate inner sidewall and the device stack and can fill the cavity. Other examples and related methods are disclosed herein.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: April 16, 2024
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Gyu Wan Han, Won Bae Bang, Ju Hyung Lee, Min Hwa Chang, Dong Joo Park, Jin Young Khim, Jae Yun Kim, Se Hwan Hong, Seung Jae Yu, Shaun Bowers, Gi Tae Lim, Byoung Woo Cho, Myung Jea Choi, Seul Bee Lee, Sang Goo Kang, Kyung Rok Park
  • Patent number: 11955629
    Abstract: The present invention relates to a positive electrode active material having improved capacity characteristic and life cycle characteristic, and a method of preparing the same, and specifically, to a positive electrode active material for a lithium secondary battery, wherein the positive electrode active material comprises a compound represented by Formula 1 above and allowing reversible intercalation/deintercalation of lithium, and from a crystal structure analysis of the positive electrode active material by a Rietveld method in which space group R-3m is used in a crystal structure model on the basis of an X-ray diffraction analysis, the thickness of MO slab is 2.1275 ? or less, the thickness of inter slab is 2.59 ? or greater, and the cation mixing ratio between Li and Ni is 0.5% or less, and a method of preparing the same.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 9, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Jong Pil Kim, Seung Beom Cho, Won Tae Kim, San Su Son, Hyuck Lee
  • Patent number: 11941376
    Abstract: A method of providing intelligent software is provided. According to the present disclosure, it is possible to request an optimal AI model on the basis of a pre-trained AI model and meta information of the AI model, and it is possible to easily provide an AI model optimized for an intelligence device by responding to the request by creating a plurality of AI differentiation models from the AI model in accordance with a plurality of differentiation levels.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: March 26, 2024
    Assignees: Korea University of Technology, Education Industry-University Cooperation Foundation
    Inventors: Won-Tae Kim, Young-Jin Kim, Deun-Sol Cho
  • Publication number: 20230032039
    Abstract: The present disclosure relates to a method for cleaning a camber, and more particularly, to a method for cleaning a chamber, which is capable of cleaning a chamber contaminated in a process of depositing a thin film on a substrate. A method for cleaning a chamber, in which a thin film is deposited, in accordance with an exemplary includes primarily cleaning the chamber by using a first gas plasmalized inside the chamber and supplying a second gas plasmalized outside the chamber into the chamber to activate the plasmalized first gas, thereby secondarily cleaning the chamber. The second gas includes a gas that is non-reactive with respect to the first gas.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 2, 2023
    Inventor: Won Tae CHO
  • Publication number: 20220415613
    Abstract: Provided is an apparatus for processing a substrate, which includes a chamber having a processing space in which a process of depositing a thin-film on a substrate is performed and a structure which is installed to expose at least one surface to the processing space and in which a coating layer made of a polymer forming at least one of covalent bond and double bond at an end tail is formed on the surface exposed to the processing space. Thus, the substrate processing apparatus in accordance with an exemplary embodiment may restrict or prevent particle generation and substrate pollution generation caused by a thin-film deposited in the chamber. Also, a period of cleaning the chamber and a structure or a component in the chamber may be extended. Thus, a product yield rate and an apparatus operation efficiency may improve.
    Type: Application
    Filed: December 4, 2020
    Publication date: December 29, 2022
    Inventor: Won Tae CHO
  • Publication number: 20220392769
    Abstract: A method of forming an electrode in accordance with an exemplary embodiment includes a process of forming a mask pattern on one surface of a base to expose a partial area of the one surface of the base by using a mask material that is polymer including an end tail having at least one bonding structure of covalent bond and double bond, a process of loading the base on which the mask pattern is formed into a chamber, and a process of forming a conductive layer containing copper on the exposed one surface of the base by using an atomic layer deposition method that alternately injects a source material containing copper and a reactive material that reacts with the source material into the chamber. Thus, according to the method of forming an electrode in accordance with an exemplary embodiment, a thin-film caused by a material for forming an electrode is not formed on a surface of the mask pattern.
    Type: Application
    Filed: November 24, 2020
    Publication date: December 8, 2022
    Inventor: Won Tae CHO
  • Patent number: 11377707
    Abstract: A clad steel plate, having excellent strength and formability, may include a base material; and a cladding material provided on both side surfaces of the base material, wherein the base material is austenitic high-manganese steel comprising, by weight, 0.3% to 1.4% of C, 12% to 25% of Mn, and a remainder of Fe and inevitable impurities, the cladding material is a martensitic carbon steel comprising, by weight, 0.09% to 0.4% of C, 0.3% to 4.5% of Mn, and a remainder of Fe and inevitable impurities.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: July 5, 2022
    Assignee: POSCO
    Inventors: Tae-Jin Song, Man-Young Park, Won-Tae Cho
  • Publication number: 20210381074
    Abstract: The present invention relates to a steel material used for a steel plate or the like for automobiles or construction and, more particularly, to a high manganese steel material having excellent anti-vibration characteristics and formability, which can be used where anti-vibration characteristics are required for noise reduction, and a method for producing same.
    Type: Application
    Filed: December 10, 2018
    Publication date: December 9, 2021
    Inventors: Won-Tae Cho, Eung-Soo Kim, Sung-Kyu Kim, Tae-Kyo Han
  • Patent number: 11011731
    Abstract: The present inventive concept provides a moisture prevention film including: a first moisture prevention film; a second moisture prevention film formed on the first moisture prevention film; and a third moisture prevention film formed on the second moisture prevention film, wherein a concentration of oxygen (O) of the second moisture prevention film is higher than a concentration of oxygen of each of the first moisture prevention film and the third moisture prevention film, a method of manufacturing the moisture prevention film, and an organic light emitting device including the moisture prevention film.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: May 18, 2021
    Inventors: Kyeong Min Kim, Bong Sik Kim, Sang Du Lee, Won Tae Cho
  • Publication number: 20210035780
    Abstract: The present invention relates to a substrate processing apparatus including: a chamber; a first electrode disposed on the chamber; a second electrode disposed under the first electrode, the second electrode including a plurality of openings; a plurality of protrusion electrodes extending from the first electrode to the plurality of openings of the second electrode; a substrate supporter being opposite to the second electrode and supporting a substrate; a first discharging region between a lower surface of the first electrode and an upper surface of the second electrode; a second discharging region between a side surface of the protrusion electrode and an opening inner surface of the second electrode; a third discharging region between a lower surface of the protrusion electrode and the opening inner surface of the second electrode; and a fourth discharging region between the second electrode and the substrate, wherein plasma is generated in at least one region of the first to fourth discharging regions.
    Type: Application
    Filed: April 19, 2019
    Publication date: February 4, 2021
    Inventors: WOONG KYO OH, Young Woon KIM, Kwang Su YOO, Won Tae CHO
  • Publication number: 20200327663
    Abstract: A method of analyzing an iris image with artificial intelligence to diagnose dementia in real time with a smart phone according to an embodiment of the present invention includes receiving an input image of a user's eye from user equipment; extracting a region of interest (RoI) from the input image to extract an iris; resizing the extracted RoI to a square shape and scaling the RoI; applying a deep neural network to the resized and scaled RoI; detecting a lesional area by applying detection and segmentation to an image acquired by applying the deep neural network; and diagnosing dementia by determining a position of the lesional area through the detection and by determining a shape of the lesional area through the segmentation.
    Type: Application
    Filed: February 7, 2020
    Publication date: October 15, 2020
    Inventors: Jong NAMGOONG, Won-tae CHO
  • Patent number: 10563280
    Abstract: The present invention relates to a high-strength and high-manganese steel sheet suitable for an outer panel or a vehicle body of a transport vehicle and, more specifically, to a high-strength and high-manganese steel sheet having excellent vibration-proof properties and a method for producing the same.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: February 18, 2020
    Assignee: POSCO
    Inventors: Sung-Kyu Kim, Kwang-Geun Chin, Tae-Jin Song, Tai-Ho Kim, Won-Tae Cho, Sun-Ho Jeon
  • Publication number: 20190355934
    Abstract: The present inventive concept provides a moisture prevention film including: a first moisture prevention film; a second moisture prevention film formed on the first moisture prevention film; and a third moisture prevention film formed on the second moisture prevention film, wherein a concentration of oxygen (O) of the second moisture prevention film is higher than a concentration of oxygen of each of the first moisture prevention film and the third moisture prevention film, a method of manufacturing the moisture prevention film, and an organic light emitting device including the moisture prevention film.
    Type: Application
    Filed: January 2, 2018
    Publication date: November 21, 2019
    Applicant: Jusung Engineering Co., Ltd.
    Inventors: Kyeong Min KIM, Bong Sik KIM, Sang Du LEE, Won Tae CHO
  • Publication number: 20190153559
    Abstract: A clad steel plate, having excellent strength and formability, may include a base material; and a cladding material provided on both side surfaces of the base material, wherein the base material is austenitic high-manganese steel comprising, by weight, 0.3% to 1.4% of C, 12% to 25% of Mn, and a remainder of Fe and inevitable impurities, the cladding material is a martensitic carbon steel comprising, by weight, 0.09% to 0.4% of C, 0.3% to 4.5% of Mn, and a remainder of Fe and inevitable impurities.
    Type: Application
    Filed: June 23, 2017
    Publication date: May 23, 2019
    Applicant: POSCO
    Inventors: Tae-Jin SONG, Man-Young PARK, Won-Tae CHO
  • Publication number: 20180371586
    Abstract: Provided is a high Mn steel sheet and a manufacturing method therefor, the steel sheet comprising, by wt %: 0-0.1% or less of C; 8-30% of Mn; 0.1% or less of P; 0.02% or less of S; 0.10 or less of N; 0-1.00 of Ti; and Fe and inevitable impurities, wherein a microstructure has epsilon martensite and austenite, and the average particle diameter of the martensite and the austenite is 2 ?m or less.
    Type: Application
    Filed: December 21, 2016
    Publication date: December 27, 2018
    Inventors: Won-Tae CHO, Tai-Ho KIM, Kwang-Geun CHIN, Young-Ha KIM, Tae-Jin SONG
  • Patent number: 10144986
    Abstract: The present invention relates to an ultrahigh-strength steel sheet and a manufacturing method therefor. More specifically, the present invention can provide an ultra-high strength steel sheet which can ensure weldability and a delayed fracture resistance property by controlling the contents of elements affecting platability along with the contents of austenite-stabilizing elements and increasing twin formation through re-rolling, and simultaneously improve impact characteristics and workability by ensuring excellent yield strength and ductility.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: December 4, 2018
    Assignee: POSCO
    Inventors: Sung-Kyu Kim, Won-Tae Cho, Tai-Ho Kim, Kwang-Geun Chin, Sang-Ho Han
  • Patent number: 10087511
    Abstract: There are provided a method for manufacturing a high manganese hot-dip galvanized steel sheet having superior coatability and ultra-high strength, and a high manganese hot-dip galvanized steel sheet manufactured by the method. The method includes: cold rolling a hot-rolled steel sheet to form a cold-rolled steel sheet, the hot-rolled steel sheet including, by wt %, C: 0.3% to 1%, Mn: 8% to 25%, Si: 0.1% to 3%, Al: 0.01% to 8%, Cr: 0.1% to 2%, Ti: 0.01% to 0.2%, B: 0.0005% to 0.01%, Ni: 0.01% to 2%, Sn: 0.06% to 0.2%, and a balance of Fe and inevitable impurities; heating the cold-rolled steel sheet; cooling the heated steel sheet to, or maintaining the heated steel sheet; and performing a hot-dip galvanizing process on the cooled or temperature-maintained steel sheet by dipping the cooled or temperature-maintained steel sheet into a hot-dip galvanizing bath.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 2, 2018
    Assignee: POSCO
    Inventors: Sun-Ho Jeon, Kwang-Geun Chin, Won-Tae Cho
  • Publication number: 20160244857
    Abstract: The present invention relates to a high-strength and high-manganese steel sheet suitable for an outer panel or a vehicle body of a transport vehicle and, more specifically, to a high-strength and high-manganese steel sheet having excellent vibration-proof properties and a method for producing the same.
    Type: Application
    Filed: December 24, 2013
    Publication date: August 25, 2016
    Inventors: Sung-Kyu KIM, Kwang-Geun CHIN, Tae-Jin SONG, Tai-Ho KIM, Won-Tae CHO, Sun-Ho JEON
  • Publication number: 20160186285
    Abstract: The present invention relates to an ultrahigh-strength steel sheet and a manufacturing method therefor. More specifically, the present invention can provide an ultra-high strength steel sheet which can ensure weldability and a delayed fracture resistance property by controlling the contents of elements affecting platability along with the contents of austenite-stabilizing elements and increasing twin formation through re-rolling, and simultaneously improve impact characteristics and workability by ensuring excellent yield strength and ductility.
    Type: Application
    Filed: August 14, 2013
    Publication date: June 30, 2016
    Applicant: POSCO
    Inventors: Sung-Kyu KIM, Won-Tae CHO, Tai-Ho KIM, Kwang-Geun CHIN, Sang-Ho HAN