Patents by Inventor Yong Gil Choi
Yong Gil 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).
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Publication number: 20240141148Abstract: Disclosed are a binder for a secondary battery anode including styrene-butadiene-based rubber with a core-shell structure and nitrile-butadiene-based rubber with a gel content of 15% or more, wherein a weight ratio of the styrene-butadiene-based rubber and the nitrile-butadiene-based rubber is 65:35 to 99:1, an anode mixture for a secondary battery, and an anode and a secondary battery including the same.Type: ApplicationFiled: October 27, 2023Publication date: May 2, 2024Applicant: KOREA KUMHO PETROCHEMICAL CO., LTDInventors: Jeong Geun KIM, Young Gil Choi, Yong Jun Lee
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Publication number: 20240126831Abstract: A depth-wise convolution acceleration device using an MAC array processor structure according to the present invention may include a data output unit, which receives a data of each row of the image from the data buffer and inputs the data into convolution operation blocks while shifting the data N?1 times according to the kernel size (N×N) and a weight output unit, which receives the kernel data from the kernel buffer and sequentially inputs a weight value constituting the kernel data to each of the row convolution operation blocks, and inputs the weight delaying by N clocks if the row increases as N rows.Type: ApplicationFiled: October 16, 2023Publication date: April 18, 2024Inventors: Hyo Seung LEE, Seen Suk KANG, Sang Gil CHOI, Seang Hoon KIM, Yong Wook KWON
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Publication number: 20240081001Abstract: A display device includes a display panel having a folding axis extending in a first direction; and a panel supporter disposed on a surface of the display panel. The panel supporter includes a first layer including a first base resin and first fiber yarns extending in the first direction and dispersed in the first base resin, a second layer disposed on the first layer, the second layer including a second base resin and second fiber yarns extending in a second direction intersecting the first direction and dispersed in the second base resin, and a third layer disposed on the second layer, the third layer including a third base resin and third fiber yarns extending in the first direction and dispersed in the third base resin.Type: ApplicationFiled: May 1, 2023Publication date: March 7, 2024Applicant: Samsung Display Co., LTD.Inventors: Soh Ra HAN, Yong Hyuck LEE, Hong Kwan LEE, Hyun Jun CHO, Min Ji KIM, Sung Woo EO, Eun Gil CHOI, Sang Woo HAN
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Publication number: 20240074065Abstract: A reprint apparatus may include: a defect checking unit configured to check a defective portion in a solder resist layer of a circuit board; a material filling unit positioned above the circuit board to fill the defective portion with a filling material; and a curing unit configured to cure the material filled in the defective portion. The defect checking unit may be configured to calculate a volume of the defective portion, and the material filling unit may be configured to calculate a discharge amount of the filling material based on the calculated volume of the defective portion, and then discharge the filling material by the discharge amount.Type: ApplicationFiled: February 17, 2023Publication date: February 29, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Do Jae YOO, Yong Gil NAMGUNG, Jong Hoon SHIN, Sang Soon CHOI, Young Chul AN
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Patent number: 11196042Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.Type: GrantFiled: June 12, 2019Date of Patent: December 7, 2021Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Patent number: 11171332Abstract: The present invention relates to a method for producing silicon-based active material particles for a secondary battery and silicon-based active material particles. A method for producing silicon-based active material particles for a secondary battery according to an embodiment of the present invention may comprise: a step of providing silicon powder; a step of providing a pre-pulverization mixture in which the silicon powder is dispersed in a solvent for dispersion comprising an antioxidant; a step of applying mechanical compression and shear stress to the silicon powder of the pre-pulverization mixture to refine the silicon powder, thereby forming silicon particles having an oxygen content controlled by the antioxidant; and a step of drying the resulting material comprising the silicon particles to obtain silicon-based active material particles.Type: GrantFiled: August 23, 2017Date of Patent: November 9, 2021Assignee: Nexeon Ltd.Inventors: Seung Chul Park, Eui Joon Song, Min Young Cheong, Jong Hun Lee, Young Tai Cho, Yong Gil Choi, Seon Park, Sung Hwan Kang, Hee Young Seo, Jee Hye Park, Tae Jin Yang
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Patent number: 10797303Abstract: The present invention relates to a silicon-based anode active material and a method of fabricating the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, wherein a carbon-based conductive layer is coated with on outermost surface of the particles; and phosphorus doped in the particles, wherein a content of the phosphorus with respect to a total weight of the particles and the phosphorus doped in the particles have a range of 0.01 wt % to 15 wt %, and a content of the oxygen has a range of 9.5 wt % to 25 wt %.Type: GrantFiled: March 25, 2016Date of Patent: October 6, 2020Assignee: Nexeon LtdInventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Patent number: 10797312Abstract: The present invention relates to a silicon-based anode active material and a method for manufacturing the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, and having a carbon-based conductive film coated on the outermost periphery thereof; and boron doped inside the particles, wherein with respect to the total weight of the particles and the doped boron, the boron is included in the amount of 0.01 weight % to 17 weight %, and the oxygen is included in the amount of 16 weight % to 29 weight %.Type: GrantFiled: December 30, 2015Date of Patent: October 6, 2020Assignee: Nexeon Ltd.Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Patent number: 10673072Abstract: The present invention relates to a silicon anode active material capable of high capacity and high output, and a method for fabricating the same. A silicon anode active material according to an embodiment of the present invention includes a silicon core including silicon particles; and a double clamping layer having a silicon carbide layer on the silicon core and a silicon oxide layer between the silicon core and the silicon carbide layer.Type: GrantFiled: February 24, 2015Date of Patent: June 2, 2020Assignee: Nexeon Ltd.Inventors: Young Tai Cho, Yong Gil Choi, Seon Park, Young Jae Lee, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Young Jin Hong
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Patent number: 10522824Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.Type: GrantFiled: July 21, 2015Date of Patent: December 31, 2019Assignee: Nexeon LtdInventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Publication number: 20190296340Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.Type: ApplicationFiled: June 12, 2019Publication date: September 26, 2019Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Publication number: 20190190020Abstract: The present invention relates to a method for producing silicon-based active material particles for a secondary battery and silicon-based active material particles. A method for producing silicon-based active material particles for a secondary battery according to an embodiment of the present invention may comprise: a step of providing silicon powder; a step of providing a pre-pulverization mixture in which the silicon powder is dispersed in a solvent for dispersion comprising an antioxidant; a step of applying mechanical compression and shear stress to the silicon powder of the pre-pulverization mixture to refine the silicon powder, thereby forming silicon particles having an oxygen content controlled by the antioxidant; and a step of drying the resulting material comprising the silicon particles to obtain silicon-based active material particles.Type: ApplicationFiled: August 23, 2017Publication date: June 20, 2019Applicant: NEXEON LTD.Inventors: Seung Chul Park, Eui Joon Song, Min Young Cheong, Jong Hun Lee, Young Tai Cho, Yong Gil Choi, Seon Park, Sung Hwan Kang, Hee Young Seo, Jee Hye Park, Tae Jin Yang
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Publication number: 20180083263Abstract: The present invention relates to a silicon-based anode active material and a method of fabricating the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, wherein a carbon-based conductive layer is coated with on outermost surface of the particles; and phosphorus doped in the particles, wherein a content of the phosphorus with respect to a total weight of the particles and the phosphorus doped in the particles have a range of 0.01 wt % to 15 wt %, and a content of the oxygen has a range of 9.5 wt % to 25 wt %.Type: ApplicationFiled: March 25, 2016Publication date: March 22, 2018Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Publication number: 20180034056Abstract: The present invention relates to a silicon anode active material capable of high capacity and high output, and a method for fabricating the same. A silicon anode active material according to an embodiment of the present invention includes a silicon core including silicon particles; and a double clamping layer having a silicon carbide layer on the silicon core and a silicon oxide layer between the silicon core and the silicon carbide layer.Type: ApplicationFiled: February 24, 2015Publication date: February 1, 2018Inventors: Young Tai Cho, Yong Gil Choi, Seon Park, Young Jae Lee, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Young Jin Hong
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Publication number: 20170352883Abstract: The present invention relates to a silicon-based anode active material and a method for manufacturing the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, and having a carbon-based conductive film coated on the outermost periphery thereof; and boron doped inside the particles, wherein with respect to the total weight of the particles and the doped boron, the boron is included in the amount of 0.01 weight % to 17 weight %, and the oxygen is included in the amount of 16 weight % to 29 weight %.Type: ApplicationFiled: December 30, 2015Publication date: December 7, 2017Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
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Publication number: 20170214042Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.Type: ApplicationFiled: July 21, 2015Publication date: July 27, 2017Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee