Patents by Inventor Kyu Il Lee

Kyu Il Lee 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: 20190299369
    Abstract: Jig assembly and method of manufacturing display device are provided. there is provided a jig assembly, including: an outer frame in which a hollow portion is defined; a support across the hollow portion; a movable cover coupled with the outer frame to expose the hollow portion; a fixed cover fixed to the outer frame; and a pressure bar disposed inside the outer frame and moving by a predetermined distance.
    Type: Application
    Filed: August 7, 2018
    Publication date: October 3, 2019
    Inventors: Jung Il LEE, Kyu Tae PARK, Ji Heon LEE, Sang Sun HAN
  • Patent number: 10403914
    Abstract: An integrated fuel cell control system is provided. The integrated fuel cell control system includes at least one sensor, at least one hydrogen on/off valve, and a fuel control unit (FCU). The FCU is configured to directly operate the at least one sensor and the at least one hydrogen on/off valve in real time and to determine a supply pressure of hydrogen supplied to a fuel cell. Thereby, noise between controllers may be removed and costs may be reduced.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 3, 2019
    Assignee: Hyundai Motor Company
    Inventors: Ji Tae Kim, Kyu Il Lee, Keun Bong Ham
  • Publication number: 20190253055
    Abstract: A clock distribution circuit may include a data clock generation circuit configured to generate an internal clock signal using an external clock signal. The clock distribution circuit may be configured to receive the internal clock signal through a first circuit and distribute the internal clock signal to an exterior of the clock distribution circuit through a second circuit coupled to a global line. A first bias voltage provided to the first circuit and the data clock generation circuit and a second bias voltage provided to the second circuit may be controlled independently of each other.
    Type: Application
    Filed: August 17, 2018
    Publication date: August 15, 2019
    Applicant: SK hynix Inc.
    Inventors: Soo Young JANG, Dae Han KWON, Geun Il LEE, Kyu Dong HWANG
  • Patent number: 10364391
    Abstract: A quantum dot includes a seed and a core enclosing the seed. The core is grown from the seed to improve size uniformity of the core. The seed includes a first compound without Cd. The first compound may be GaP. The core may include a second compound including elements from group XIII and group XV. The second compound may be InP. The quantum dot may also include a first shell of a third compound enclosing the core. The third compound may be ZnSe or ZnS. The quantum dot may also include a second shell of a fourth compound enclosing the first shell. The fourth compound may be ZnS when the third compound is ZnSe. Embodiments also relate to a quantum dot including first to third elements selected from XIII group elements and XV group elements and fourth to sixth elements selected from XII group elements and XVI group elements.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: July 30, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Kook Jang, Byung-Geol Kim, Wy-Yong Kim, Kyu-Nam Kim, Hee-Yeol Kim, Sung-Il Woo, Do-Hyung Kim, Tae-Yang Lee
  • Publication number: 20190216616
    Abstract: The present invention relates to a method for manufacturing a bone graft material using 3D printing of a DLP system. The method includes (1) dispersing a powder material including calcium phosphate-based ceramics in a solvent; (2) recovering the calcium phosphate-based ceramics by removing the solvent from a solution in which the calcium phosphate-based ceramic material is dispersed in Step 1; (3) producing a photocurable resin composition by adding a binder resin including a crosslinking agent and a photoinitiator to the calcium phosphate-based ceramics obtained in Step 2; (4) performing 3D rapid prototyping on a bone graft material molded body from the composition for a bone graft material produced in Step 3 by 3D printing of a DLP system; and (5) debinding and sintering organic materials remaining in the bone graft material molded body subjected to prototyping in Step 4.
    Type: Application
    Filed: December 11, 2018
    Publication date: July 18, 2019
    Inventors: So Young YANG, Yong Il CHUNG, Kyu Hyung KIM, Min Ji LEE, Soo In LEE, Eun Chang CHOI
  • Patent number: 10350487
    Abstract: A method of automatically targeting a target object, the method including setting a target range including a designated distance from a user-controlled character and a designated horizontal angle centering at a location of the character, selecting at least one target object included in the set target range, and displaying a shape distinguishable from a shape of the target object at a location near the at least one selected target object, wherein the target object is an object the character is able to attack from among objects in a computer game.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: July 16, 2019
    Assignee: WE MADE IO CO., LTD.
    Inventors: Hoon Seok, Kyu Il Roh, Sung Hee Kim, Kwang Soo Lee, Young Hoon Lee
  • Patent number: 10326068
    Abstract: A thermoelectric device including: a thermoelectric material layer comprising a thermoelectric material; a transition layer on the thermoelectric material; and a diffusion prevention layer on the transition layer, wherein the thermoelectric material comprises a compound of Formula 1: (A1-aA?a)4-x(B1-bB?b)3-y-zCz??Formula 1 wherein A and A? are different from each other, A is a Group 13 element, and A? is at least one element of a Group 13 element, a Group 14 element, a rare-earth element, or a transition metal, B and B? are different from each other, B is a Group 16 element, and B? is at least one element of a Group 14 element, a Group 15 element, or a Group 16 element, C is at least one halogen atom, a complies with the inequality 0?a<1, b complies with the inequality 0?b<1, x complies with the inequality ?1<x<1, y complies with the inequality ?1<y<1, and z complies with 0?z<0.5.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: June 18, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-il Kim, Sung-woo Hwang, Sang-mock Lee, Kyu-hyoung Lee, Vilius Mykhailovsky, Roman Mochernyuk
  • Patent number: 10308529
    Abstract: The present invention relates to a desalination apparatus and a desalination method using the same. In one specific embodiment, the desalination apparatus comprises: a forward osmosis unit having a draw-solution part into which seawater flows, and a raw water part into which raw water flows, and having an osmosis membrane, formed between the draw solution part and the raw water part, so as to respectively generate first treated water and first concentrated water; a capacitive deionization unit, which is connected to the draw solution part through a first inflow passage, and into which the first treated water of the draw solution part flows so as to generate second treated water; and an electrodialysis unit, which is connected to the raw water part through a second inflow passage, and into which the first concentrated water of the raw water part flows so as to generate third treated water.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 4, 2019
    Assignee: Korea Electric Power Corporation
    Inventors: Pill Yang Park, Jae Bong Lee, Seok Won Yoon, Ki Hyoung Kim, Kyu Il Kim
  • Patent number: 10272797
    Abstract: A system and method for controlling charging of a low-voltage battery are provided. The method includes determining a state of charge of the low-voltage battery of a vehicle based on a voltage of the low-voltage battery and determining a state of charge of the low-voltage battery based on a magnitude of consumed power of a low-voltage direct current (DC) converter (LDC) providing charged power to the low-voltage battery during a period in which vehicle start-up is performed. A charged voltage of the low-voltage battery is then set based on a determination result of the state of charge of the low-voltage battery.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: April 30, 2019
    Assignee: Hyundai Motor Company
    Inventors: Kyu Il Lee, Boung Ho Min, Kyung Won Suh
  • Publication number: 20190115607
    Abstract: A low flow control method for a fuel cell includes: determining whether or not the fuel cell enters a low flow control mode, dividing a low flow control operation into a plurality of low flow control stages upon determining that the fuel cell enters the low flow control mode, and controlling a power generation quantity of the fuel cell according to the low flow control stages.
    Type: Application
    Filed: December 6, 2017
    Publication date: April 18, 2019
    Inventors: Kyu Il Lee, Seong Cheol Jeong, Boung Ho Min
  • Patent number: 10247768
    Abstract: A system for measuring the insulation resistance of a fuel cell vehicle is provided. The system includes a fuel cell that supplies power, a rechargeable high-voltage battery, and a bidirectional converter, disposed between an output terminal of the fuel cell and the high-voltage battery, to adjust a voltage at the output terminal of the fuel cell. A fast measurement unit measures the insulation resistance of the fuel cell vehicle by being connected to the output terminal of the fuel cell and a second measurement unit measures the insulation resistance of the fuel cell vehicle by being connected to the output terminal of the high-voltage battery. A controller operates the bidirectional converter based on the state of the fuel cell vehicle and measure the insulation resistance of the fuel cell vehicle using the first measurement unit or the second measurement unit.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: April 2, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Kyu Il Lee, Sung Suk Ok, Seon Hak Kim
  • Patent number: 10147960
    Abstract: A shut down system of a fuel cell vehicle includes: a fuel cell configured to output a high voltage; a rechargeable high voltage battery; a bidirectional converter arranged between an output terminal of the fuel cell and the high voltage battery; a first relay arranged between the fuel cell and the bidirectional converter; and a controller configured to control a voltage of the bidirectional converter when the fuel cell vehicle stalls to reduce a voltage of the output terminal of the fuel cell and turn off the first relay when a voltage value of the output terminal of the fuel cell is below a preset voltage reference value.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 4, 2018
    Assignee: Hyundai Motor Company
    Inventors: Kyu Il Lee, Jae Yeong Yoo, Sung Suk Ok
  • Publication number: 20180312073
    Abstract: A system for controlling a state of charge (SOC) of a battery includes a battery SOC control apparatus for controlling a revolution per minute (RPM) of an air blower based on the SOC of the battery and a number of charge/discharge cycles of the battery in a case where a vehicle is in a constant current driving state, and a memory device for storing the SOC of the battery calculated by the battery SOC control apparatus.
    Type: Application
    Filed: July 20, 2017
    Publication date: November 1, 2018
    Inventors: Seung Yoon LEE, Gun Hyung PARK, Kyu Il LEE, Dae Jong KIM
  • Patent number: 10026980
    Abstract: A method and system for maintaining stability of a system of a fuel cell vehicle are provided to prevent malfunction of sensors of a low voltage DC-DC converter and the respective controllers. A start timing of a fault diagnosis for the low voltage DC-DC converter and the respective controllers is determined and a deviation between voltages of the sensors of the low voltage DC-DC converter and the respective controllers is detected to determine whether the low voltage DC-DC converter and the respective controllers fail.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 17, 2018
    Assignee: Hyundai Motor Company
    Inventors: Seong Pil Ryu, Sung Suk Ok, Ji Tae Kim, Kyu Il Lee
  • Publication number: 20180170210
    Abstract: A fuel cell temperature control apparatus includes: a driver propensity determination processor that determines a driver's propensity while a vehicle travels; a temperature control factor decision processor that determines a temperature control factor based on an ambient temperature and the driver's propensity to control the temperature of the fuel cell; and a storage that stores driver propensity determination information determined by the driver propensity determination processor.
    Type: Application
    Filed: June 1, 2017
    Publication date: June 21, 2018
    Inventors: Seong Cheol JEONG, Kyu Il LEE
  • Patent number: 10000141
    Abstract: A method and system for controlling a fuel cell vehicle are provided. The method includes determining, by a controller, a driving pattern of a driver based on driving information including acceleration and deceleration information. A condition for activation of an idling-stop of a fuel cell is then set based on the determined driving pattern and the fuel cell is stopped from generating electric energy when the condition for activation of the idling-stop is satisfied.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: June 19, 2018
    Assignee: Hyundai Motor Company
    Inventors: Kyu Il Lee, Seon Hak Kim, Seong Pil Ryu
  • Patent number: 9929579
    Abstract: A method and an apparatus for controlling charging of a low voltage battery are provided. The method includes determining a consumption pattern of an auxiliary machinery based on a consumed power of the auxiliary machinery and setting a base charged voltage based on the consumption pattern of the auxiliary machinery. Further, a charged voltage is set for the low voltage battery based on the base charged voltage, a driving mode of a vehicle, and a state of charge of a high voltage battery.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: March 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Kyu Il Lee, Ji Tae Kim, Boung Ho Min
  • Publication number: 20180069254
    Abstract: A shut down system of a fuel cell vehicle includes: a fuel cell configured to output a high voltage; a rechargeable high voltage battery; a bidirectional converter arranged between an output terminal of the fuel cell and the high voltage battery; a first relay arranged between the fuel cell and the bidirectional converter; and a controller configured to control a voltage of the bidirectional converter when the fuel cell vehicle stalls to reduce a voltage of the output terminal of the fuel cell and turn off the first relay when a voltage value of the output terminal of the fuel cell is below a preset voltage reference value.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 8, 2018
    Inventors: Kyu Il Lee, Jae Yeong Yoo, Sung Suk Ok
  • Publication number: 20180026282
    Abstract: A restarting system, a controller, and a restarting method for a fuel cell vehicle are provided. The restarting system includes a consumption resistor connected in parallel to a high voltage line that connects between a fuel cell and a high voltage battery and a relay that adjusts the connection between the consumption resistor and the high voltage line. A controller operates the relay and when a shutdown request signal of the vehicle is input, charges the high voltage battery with residual generated power of the fuel cell or connects the relay to the consumption resistor to consume the residual generated power as the consumption resistance. When a starting request signal of the vehicle is input, the controller is reset when an output voltage of the fuel cell is reduced to be equal to or less than a required voltage and then output a starting permission signal of the vehicle.
    Type: Application
    Filed: October 26, 2016
    Publication date: January 25, 2018
    Inventors: Kyu Il Lee, Gun Hyung Park, Sung Gone Yoon
  • Patent number: 9871401
    Abstract: A method for controlling low-voltage battery charging may include determining a state-of-charge (SOC) of a low-voltage battery based on a voltage of the low-voltage battery. A base charging voltage is set according to the SOC of the low-voltage battery. A charging voltage of the low-voltage battery is set based on the base charging voltage, a vehicle operation mode, and a SOC of a high-voltage battery.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: January 16, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Kyu Il Lee, Boung Ho Min, Sung Gone Yoon