Patents by Inventor Won Jin Choi
Won Jin 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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Patent number: 11946662Abstract: An apparatus and a method for predicting an amount of temperature change of a target zone are provided. The method includes collecting a plurality of base information, and calculating base relationship information between an indoor/outdoor temperature difference of the target zone and an amount of temperature change of the target zone on the basis of the plurality of base information. Each of the plurality of base information is information on the amount of temperature change of the target zone according to the indoor/outdoor temperature difference of the target zone during a late night time section, and the late night time section is set on the basis of at least one of activity schedule information, a sunrise time point, and a sunset time point of the target zone.Type: GrantFiled: May 5, 2023Date of Patent: April 2, 2024Assignee: SEEDN CO., LTDInventors: Hyun Woong Choi, Won Jin Hong
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Publication number: 20240105963Abstract: A method for manufacturing a gas diffusion layer for a fuel cell wherein carbon nanotubes are impregnated into Korean paper, thereby enhancing electroconductivity, and a gas diffusion layer manufactured thereby. The method for manufacturing a gas diffusion layer for a fuel cell which is to manufacture a gas diffusion layer as a constituent member of a unit cell in a fuel cell, includes a support preparation step of preparing a support with Korean paper; a dispersion preparation step of dispersing a carbon substance in a solvent to form a dispersion, a coating step of coating the support with the dispersion, and a thermal treatment step of thermally treating the dispersion-coated support to fix the carbon substance to the support.Type: ApplicationFiled: March 6, 2023Publication date: March 28, 2024Inventors: Seung Tak Noh, Ji Han Lee, In Seok Lee, Jae Man Park, Won Jong Choi, Choong Hee Kim, Seong Hwang Kim, Jong Hoon Lee, Soo Jin Park, Seul Yi Lee
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Publication number: 20240092776Abstract: Disclosed (or Provided) are a heterocyclic compound and an organic light emitting device including the same.Type: ApplicationFiled: June 22, 2023Publication date: March 21, 2024Applicant: LT MATERIALS CO., LTD.Inventors: Hyung-Jin LEE, Won-Jang JEONG, Dong-Jun KIM, Dae-Hyuk CHOI
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Publication number: 20240085101Abstract: A refrigerant cycle pressure control system includes: a heat exchanger cooling boil-off gas received from a storage tank; a refrigerant cycle including a refrigerant circulation line, a refrigerant compressor, and an expander; an inventory tank storing the refrigerant to be charged to the refrigerant cycle; a refrigerant supply line connecting the inventory tank to an upstream side of the refrigerant compressor to replenish the refrigerant cycle with the refrigerant; a refrigerant discharge line connecting a downstream side of the refrigerant compressor to the inventory tank to discharge the refrigerant from the refrigerant cycle to the inventory tank; and a pressure regulation line branched off of the refrigerant discharge line. The refrigerant cycle is depressurized by discharging the refrigerant from the refrigerant cycle through the refrigerant discharge line or the pressure regulation line.Type: ApplicationFiled: December 24, 2021Publication date: March 14, 2024Inventors: Hye Min Jung, Seon Jin Kim, Won Jae Choi, Seung Chul Lee
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Publication number: 20240079642Abstract: The present invention relates to a method for preparing an alkali metal ion conductive chalcogenide-based solid electrolyte, a solid electrolyte prepared thereby, and an all-solid-state battery comprising the same.Type: ApplicationFiled: January 11, 2022Publication date: March 7, 2024Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTEInventors: Yoon Cheol HA, Sang Min LEE, Byung Gon KIM, Gum Jae PARK, Jun Woo PARK, Jun Ho PARK, Ji Hyun YU, Won Jae LEE, You Jin LEE, Hae Young CHOI
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Publication number: 20240075432Abstract: Provided are a hollow fiber composite membrane for water vapor separation, comprising a hollow fiber membrane including two or more pores and a coating layer in which an interfacial polymer obtained from interfacial polymerization of water-soluble monomer and an organic monomer is coated on a surface of the hollow fiber membrane, and a chemical resistant substance is introduced in the interfacial polymer, and a method for manufacturing the same.Type: ApplicationFiled: November 16, 2022Publication date: March 7, 2024Applicants: KOREA INSTITUTE OF ENERGY RESEARCH, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Deok JEON, Soon Jin KWON, Won Kil CHOI, So Jung PARK
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Patent number: 11917755Abstract: The carrier-foil-attached ultra-thin copper foil according to one embodiment of the present invention comprises a carrier foil, a release layer, a first ultra-thin copper foil, a Cu—Al bonding strength improvement layer, an Al layer, and a second ultra-thin copper foil, wherein the release layer may comprise a first metal (A3) having peeling properties, and a second metal (B3) and third metal (C3) facilitating the plating of the first metal (A3).Type: GrantFiled: January 15, 2018Date of Patent: February 27, 2024Assignee: Lotte Energy Materials CorporationInventors: Won Jin Beom, Sun Hyung Lee, Eun Sil Choi, Ki Deok Song, Hyung Cheol Kim
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Patent number: 11548424Abstract: A power leg rest for a vehicle includes a pair of fixed plates; a main pipe connected to between internal surfaces of the fixed plates; a tilt motor tiltably mounted to the main pipe; a pair of main links fastened to external surfaces of the fixed plates by respective first hinge pins; a support pipe connected to between front end portions of the main links; a lead nut bracket coupled to a lead screw and movable forwards and backwards and hingedly fastened to the support pipe; a pair of leg rest links mounted on both sides of a leg rest frame; and a pair of driving links, each being hingedly fastened to corresponding ones of the leg rest links, the main links, and the fixed plates, operating in linkage with the main link, and folding or unfolding the pair of leg rest links.Type: GrantFiled: January 8, 2021Date of Patent: January 10, 2023Assignees: Hyundai Motor Company, Kia Motors Corporation, DAS CO., LTDInventors: Tae Su Kim, Soo Hyun Moon, Hyun Kyu Moon, Sang Hwi Yoon, Du Go Jung, Hyun Ko, Won Jin Choi, Young Joon Kim
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Patent number: 11492261Abstract: The present invention relates to a method using chemical reaction transparency of graphene, and more specifically to a method capable of forming a desired material by a catalytic reaction on a graphene surface using the graphene which inhibits oxygen diffusion without blocking electron delivery, and an applied method thereof.Type: GrantFiled: December 4, 2015Date of Patent: November 8, 2022Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Won Jin Choi, Jeong-O Lee, Hyunju Chang, Ki-jeong Kong, Ki-Seok An
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Publication number: 20220294186Abstract: Provided is a laser device including a lower reflective layer, a laser cavity comprising an active layer disposed on the lower reflective layer, an upper reflective layer disposed on the laser cavity, and a blocking structure disposed between the laser cavity and the upper reflective layer, in which the blocking structure includes a first intermediate layer disposed on the laser cavity, a blocking layer disposed on the first intermediate layer and including a through-hole, and a second intermediate layer disposed on the blocking layer.Type: ApplicationFiled: August 5, 2021Publication date: September 15, 2022Applicant: Rayir, Co.Inventors: Won Jin CHOI, Dong Hwan KIM
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Patent number: 11437782Abstract: An embodiment discloses a vertical cavity surface emitting laser including a substrate, a lower reflective layer disposed on the substrate, a laser cavity including an active layer and disposed on the lower reflective layer, an oxide layer disposed on the laser cavity, an upper reflective layer disposed on the oxide layer, a plurality of first holes formed in the upper reflective layer and the oxide layer, and an upper electrode disposed on inner sides of the plurality of first holes and disposed on the upper reflective layer, wherein the oxide layer includes a plurality of light emitting regions spaced apart from each other, and the plurality of first holes are disposed to surround each of the light emitting regions in a plan view.Type: GrantFiled: February 11, 2019Date of Patent: September 6, 2022Assignee: Rayir, Co.Inventors: Won Jin Choi, Dong Hwan Kim, Keuk Kim
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Patent number: 11394106Abstract: Various embodiments of the present invention relate to an electronic device comprising a wireless communication circuit, and a portable communication device.Type: GrantFiled: November 5, 2018Date of Patent: July 19, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Dong Ju Lee, Won Jin Choi, Bong Sup Son, Moon Hyuk Choi, Se Woong Ahn, Su Ho Jin, Jung Hyun Park, Sung Jun Kim, Sung Chul Park, Ji Woo Lee
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Publication number: 20220048422Abstract: A power leg rest for a vehicle includes a pair of fixed plates; a main pipe connected to between internal surfaces of the fixed plates; a tilt motor tiltably mounted to the main pipe; a pair of main links fastened to external surfaces of the fixed plates by respective first hinge pins; a support pipe connected to between front end portions of the main links; a lead nut bracket coupled to a lead screw and movable forwards and backwards and hingedly fastened to the support pipe; a pair of leg rest links mounted on both sides of a leg rest frame; and a pair of driving links, each being hingedly fastened to corresponding ones of the leg rest links, the main links, and the fixed plates, operating in linkage with the main link, and folding or unfolding the pair of leg rest links.Type: ApplicationFiled: January 8, 2021Publication date: February 17, 2022Applicants: Hyundai Motor Company, Kia Motors Corporation, DAS CO., LTDInventors: Tae Su KIM, Soo Hyun MOON, Hyun Kyu MOON, Sang Hwi YOON, Du Go JUNG, Hyun KO, Won Jin CHOI, Young Joon KIM
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Patent number: 11178614Abstract: An electronic device includes a housing; a first antenna located at a first part of the housing; a second antenna located at a second part separated from the first part of the housing; a transceiver configured to generate a first signal and a second signal; a first coupler electrically connected between the first antenna and the transceiver and configured to receive the first signal from the transceiver and provide the received first signal to the first antenna; a second coupler electrically connected to the second antenna and the transceiver and configured to receive the second signal from the transceiver and provide the received second signal to the second antenna; and a control circuit operationally connected to the transceiver, wherein the control circuit is configured to determine at least one value related to gains of the first signal and the second signal based at least partially on the signals provided from the first coupler and the second coupler, determine whether the first signal has a higher gainType: GrantFiled: November 14, 2018Date of Patent: November 16, 2021Inventors: Won-Jin Choi, Dong-Ju Lee, Bong-Sup Son, Seok-Kun Hyung, Ji-Woo Lee
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Publication number: 20210336419Abstract: An embodiment discloses a vertical cavity surface emitting laser including a substrate, a lower reflective layer disposed on the substrate, a laser cavity including an active layer and disposed on the lower reflective layer, an oxide layer disposed on the laser cavity, an upper reflective layer disposed on the oxide layer, a plurality of first holes formed in the upper reflective layer and the oxide layer, and an upper electrode disposed on inner sides of the plurality of first holes and disposed on the upper reflective layer, wherein the oxide layer includes a plurality of light emitting regions spaced apart from each other, and the plurality of first holes are disposed to surround each of the light emitting regions in a plan view.Type: ApplicationFiled: February 11, 2019Publication date: October 28, 2021Applicant: Rayir, Co.Inventors: Won Jin CHOI, Dong Hwan KIM, Keuk KIM
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Patent number: 11085126Abstract: A feed assembly supplies polysilicon to a growth chamber for growing a crystal ingot from a melt. An example system includes a housing having support rails for receiving one of a granular tray and a chunk tray and a feed material reservoir positioned above the support rails to selectively feed one of either the granular tray or the chunk tray. A valve mechanism and pulse vibrator are also disclosed.Type: GrantFiled: November 13, 2019Date of Patent: August 10, 2021Assignees: GlobalWafers Co., Ltd., Daevac International Co., Ltd.Inventors: Seok Min Yun, Seong Su Park, Jun Hwan Ji, Won-Jin Choi, UiSung Jung, Young Jung Lee, Tae Su Koo, Sung-Jin Kim
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Publication number: 20210005954Abstract: Various embodiments of the present invention relate to an electronic device comprising a wireless communication circuit, and a portable communication device.Type: ApplicationFiled: November 5, 2018Publication date: January 7, 2021Inventors: Dong Ju LEE, Won Jin CHOI, Bong Sup SON, Moon Hyuk CHOI, Se Woong AHN, Su Ho JIN, Jung Hyun PARK, Sung Jun KIM, Sung Chul PARK, Ji Woo LEE
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Patent number: 10866706Abstract: An electronic device is provided. The electronic device includes a memory for storing at least one application, a wireless and/or wired communication interface, and a processor. The processor is configured to detect a display event for the at least one application, in response to the detection of display event, determine whether the electronic device is in a state of being connected to an external output device through the communication interface, when it is determined that the electronic device is in the state of being connected to the external output device, determine whether execution of the at least one application is possible, based on a state of connection with the external output device, and control to display, on the external output device, information indicating whether execution of the at least one application is possible.Type: GrantFiled: August 22, 2018Date of Patent: December 15, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Byeongkuk Keam, Seungkyu Lee, Hoyoung Lee, Won Jin Choi, Yujin Choi
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Patent number: 10720756Abstract: An embodiment discloses a vertical cavity surface emitting laser and a method for manufacturing the same, the vertical cavity surface emitting laser comprising: a substrate; a lower reflective layer disposed on the substrate; an active layer disposed on the lower reflective layer; an oxide layer disposed on the active layer and comprising a first hole disposed at the center thereof; a capping layer disposed on the oxide layer; and an upper reflective layer disposed on the capping layer and the first hole.Type: GrantFiled: April 3, 2018Date of Patent: July 21, 2020Assignee: RAYIR, CO.Inventor: Won Jin Choi
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Patent number: 10707278Abstract: Disclosed are a backplane substrate, which achieves improved interface bonding characteristics via a recess configuration at the interface of an organic layer with an inorganic layer, thereby preventing peeling due to repeated folding, and a flexible display using the same. An organic layer is introduced into a recess provided in an inorganic layer so as to achieve improved interface bonding characteristics.Type: GrantFiled: October 31, 2017Date of Patent: July 7, 2020Assignee: LG Display Co., Ltd.Inventor: Won-Jin Choi