Patents by Inventor Jae-young Choi

Jae-young 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).

  • Patent number: 9978534
    Abstract: An electrode structure includes a rolled graphene film which is wound about a central axis, and a nanomaterial dispersed on a surface of the rolled graphene film.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: May 22, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CORNING PRECISION MATERIALS CO., LTD.
    Inventors: Yeo-heung Yoon, Hyo-young Lee, Soon-geun Kwon, Jae-young Choi
  • Patent number: 9975557
    Abstract: A method of controlling an electric vehicle transmission includes: a torque-securing step of securing a predetermined spare torque to be generated by a motor in accordance with a current motor torque when a controller determines that there is a need for downshift from an upper gear step to a lower gear step; a slip-controlling step of generating a friction force through a servo clutch applying a friction force between an input shaft and a servo driving gear of a pair of servo gears; a shifting-to-neutral step of shifting to a neutral gear by disengaging a synchronizer for the upper gear step; a motor-synchronizing step of synchronizing a rotational speed of the motor with a desired speed of a lower gear step using the spare torque of the motor secured in the torque-securing step; a gear-engaging step of engaging a synchronizer for the lower gear step; and a clutch-disengaging step of finishing shifting by disengaging the servo clutch.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: May 22, 2018
    Assignees: HYUNDAI MOTOR COMPANY, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jong Yun Park, Kyung Ha Kim, Jae Young Choi, Yeon Ho Kim, Sung Wha Hong
  • Patent number: 9969893
    Abstract: An aqueous composition including: a conductive metal nanoparticle having an organic compound disposed on a surface of the conductive metal nanoparticle; a conductive metal nanowire; and a solvent including water and optionally an alcohol.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: May 15, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Kwang Hee Kim, Daejin Yang, Jong Wook Roh, Rujun Ma, Hyeon Cheol Park, Seung-Hyun Baik, Jae-Young Choi
  • Publication number: 20180112720
    Abstract: A clutch for a vehicle may include a first rotor locked to a rotating shaft controlling rotations of the first rotor; a second rotor rotatably provided on the rotating shaft; a clutch part inclinedly protruding from the second rotor toward the first rotor, wherein an outer circumferential surface of the clutch part is configured as a conical surface; an inner ring rotating along with the first rotor; a cone rotating along with the second rotor; an outer ring rotating along with the first rotor; and a sleeve rectilinearly slidable at an outside of an outer circumferential surface of the first rotor along a direction of the rotating shaft to press the outer ring toward the second rotor, forming friction surfaces between the outer ring and the cone, between the cone and the inner ring, and between the inner ring and the clutch part.
    Type: Application
    Filed: November 29, 2016
    Publication date: April 26, 2018
    Applicant: Hyundai Motor Company
    Inventors: Jae Young CHOI, Sung Wha HONG, Jong Yun PARK
  • Publication number: 20180099654
    Abstract: Provided is a method of controlling a hybrid electric vehicle capable of improving acceleration response upon kick-down. The method includes calculating a rising gradient of a motor speed increasing during kick-down shift based on a present speed of a motor for driving the vehicle which is detected at a control unit in real time, upon detection of demand of kick-down shift due to acceleration operation of a driver, calculating a falling gradient of intervention torque based on the rising gradient of the motor speed at the control unit, determining an entry point of intervention control based on the present speed of the motor detected at the control unit in real time, and performing torque intervention control for controlling driving of the motor in order to output intervention torque, namely, motor torque decreased based on the falling gradient of intervention torque calculated from the determined entry point at the control unit.
    Type: Application
    Filed: December 15, 2016
    Publication date: April 12, 2018
    Applicants: HYUNDAI MOTOR COMPANY, Kia Motors Corporation
    Inventors: Hong Chul SHIN, Sang Don LEE, Kyung Hun HWANG, Jae Young CHOI, Jong Bum OH
  • Patent number: 9902619
    Abstract: Provided is a process for economically preparing a graphene shell having a desired configuration which is applicable in various fields wherein in the process the thickness of the graphene shell can be controlled, and a graphene shell prepared by the process.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: February 27, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-young Choi, Hyeon-Jin Shin, Seon-mi Yoon
  • Patent number: 9899209
    Abstract: An electrically conductive thin film including a plurality of nanosheets including a doped titanium oxide represented by Chemical Formula 1 and having a layered crystal structure: (A?Ti1??)O2+???Chemical Formula 1 wherein, in Chemical Formula 1, ? is greater than 0, A is at least one dopant metal selected from Nb, Ta, V, W, Cr, and Mo, and ? is greater than 0 and less than 1. Also, an electronic device including the electrically conductive thin film.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doh Won Jung, Hee Jung Park, Yoon Chul Son, Yun Sung Woo, Jongmin Lee, Yong Hee Cho, Kyoung-Seok Moon, Jae-Young Choi, Kimoon Lee
  • Publication number: 20180046600
    Abstract: A method and apparatus for generating a font of which style is changeable are disclosed. The disclosed method is a method for generating a font to be performed on an apparatus including a processor. The method comprises (a) setting a fixed style parameter which cannot change the style, wherein the fixed style parameter is included in style parameters, and a METAFONT consists of the style parameter and a letter drawing function, (b) generating an intermediate code based on the letter drawing function and the fixed style parameter; and (c) generating an output font by combining the intermediate code with a variable style parameter which can change the style, wherein the variable style parameter is included in the style parameter.
    Type: Application
    Filed: May 16, 2017
    Publication date: February 15, 2018
    Inventors: Jae Young CHOI, Sung Min KIM, Geun Ho JEONG
  • Patent number: 9887020
    Abstract: A composition including graphene; and at least one dopant selected from the group consisting of an organic dopant and an inorganic dopant.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: February 6, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeon-jin Shin, Won-mook Choi, Jae-young Choi, Seon-mi Yoon
  • Publication number: 20180025703
    Abstract: A system for providing fonts, an apparatus for providing Metafont fonts, and a method for controlling the apparatus are disclosed. The disclosed apparatus, which connects to a device to provide Metafont fonts, includes: a communication module configured to receive a first font request from the device for the font engine, where the first font request includes at least one font style parameter and the ID information of a Metafont font file; and an operating module configured to determine whether or not a font file having ID information identical to the ID information of the font file included in the first font request exists in a first external memory, and if a font file having identical ID information exists, determine whether or not the font converted from the font file having identical ID information is saved in a second external memory.
    Type: Application
    Filed: August 31, 2016
    Publication date: January 25, 2018
    Inventors: Jae Young CHOI, Sung Min KIM, Ho Jin LEE, Geun Ho JEONG
  • Patent number: 9871180
    Abstract: A thermoelectric material includes a stack structure including alternately stacked first and second material layers. The first material layer may include a carbon nano-material. The second material layer may include a thermoelectric inorganic material. The first material layer may include a thermoelectric inorganic material in addition to the carbon nano-material. The carbon nano-material may include, for example, graphene. At least one of the first and second material layers may include a plurality of nanoparticles. The thermoelectric material may further include at least one conductor extending in an out-of-plane direction of the stack structure.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: January 16, 2018
    Assignees: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Jae-young Choi, Seung-hyun Baik, Won-young Kim, Dae-woo Suh, Sang-hoon Lee, Seung-hyun Hong
  • Patent number: 9837179
    Abstract: An electrically conductive thin film including: a material including a compound represented by Chemical Formula 1 and having a layered crystal structure, MemAa??Chemical Formula 1 wherein Me is Al, Ga, In, Si, Ge, Sn, A is S, Se, Te, or a combination thereof, and m and a each are independently a number selected so that the compound of Chemical Formula 1 is neutral; and a dopant disposed in the compound of Chemical Formula 1, wherein the dopant is a metal dopant that is different from Me and has an oxidation state which is greater than an oxidation state of Me, a non-metal dopant having a greater number of valence electrons than a number of valence electrons of A in Chemical Formula 1, or a combination thereof, and wherein the compound of Chemical Formula 1 includes a chemical bond which includes a valence electron of an s orbital of Me.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: December 5, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kimoon Lee, Sang Il Kim, Se Yun Kim, Sung Woo Hwang, Woojin Lee, Hee Jung Park, Yoon Chul Son, Hyosug Lee, Doh Won Jung, Youngjin Cho, Jae-Young Choi
  • Publication number: 20170322911
    Abstract: An electronic device is provided. The electronic device includes a display configured to output a screen on which a web browser is executed, an input device comprising input circuitry configured to integrate with the display or be independent of the display, a communication circuit configured establish a communication channel with the network via a wired or wireless communication connection, a processor configured to be electrically connected with the communication circuit, the display, and the input device, and a memory configured to store a program and instructions for the web browser and be electrically connected with the processor.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 9, 2017
    Inventors: Kyung Tae KIM, Kyoung Bong KANG, Eun Sol PARK, Young Taeck SONG, Soon Young LEE, Gyong Jin JOUNG, Hee Jae KIM, Hyun Soo SHIM, Dae Chan JANG, Jin Hyuk JUN, Jae Young CHOI
  • Patent number: 9809460
    Abstract: An electrically conductive thin film including a compound represented by Chemical Formula 1 and having a layered crystal structure Re2C??Chemical Formula 1 wherein Re is a lanthanide. Also an electronic device including the electrically conductive thin film.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 7, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hee Jung Park, Yoon Chul Son, Doh Won Jung, Woojin Lee, Jae-Young Choi
  • Patent number: 9776378
    Abstract: A graphene sheet including an intercalation compound and 2 to about 300 unit graphene layers, wherein each of the unit graphene layers includes a polycyclic aromatic molecule in which a plurality of carbon atoms in the polycyclic aromatic molecule are covalently bonded to each other; and wherein the intercalation compound is interposed between the unit graphene layers.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: October 3, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jae-Young Choi
  • Publication number: 20170276241
    Abstract: A method for controlling a vehicle installed with an automatic transmission, includes: a sudden stop determination step in which a controller determines whether the vehicle has stopped at a speed greater than or equal to a reference deceleration speed and whether a post-stop elapsed time is within a first reference time; a takeoff determination step in which the controller determines whether an input torque of the transmission exceeds zero within the first reference time when a shift range is in a driving range; a pressure control step in which, when the vehicle takes off, the controller elevates a line pressure of the transmission; a limitation determination step in which if a slippage extent of a turbine exceeds a reference slippage value for a second reference time, the controller limits the takeoff; and a torque reduction step in which the controller reduces a takeoff torque input of the transmission.
    Type: Application
    Filed: August 19, 2016
    Publication date: September 28, 2017
    Inventors: Jae Young Choi, Hye Kil Hwang, Sang Don Lee, Woo Suk Choi, Joon Shik Park
  • Publication number: 20170243799
    Abstract: The present invention relates to a substrate for an integrated circuit package and, more specifically, to a substrate for an integrated circuit package, which reduces mismatch of coefficients of thermal expansion with a semiconductor chip, thereby preventing or minimizing warpage during a reflow process.
    Type: Application
    Filed: September 18, 2015
    Publication date: August 24, 2017
    Applicant: Corning Precision Materials Co., Ltd.
    Inventors: Joon Soo KIM, Hyung Soo MOON, Jae Young CHOI
  • Patent number: 9721734
    Abstract: A graphene-nanomaterial composite, an electrode and an electric device including the graphene-nanomaterial composite and a method of manufacturing the graphene-nanomaterial composite include a graphene stacked structure including a plurality of graphene films stacked on one another; and a nanomaterial between the plurality of graphene films and bonded to at least one of the plurality of graphene films by a chemical bond.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: August 1, 2017
    Assignees: Samsung Electronics Co., Ltd., Corning Precision Materials Co., Ltd.
    Inventors: Chong-joon Ryu, Nae-young Jung, Soon-geun Kwon, Jae-young Choi
  • Patent number: 9713794
    Abstract: According to example embodiments, a separation membrane includes a graphene on at least one surface of a polymer support. The graphene may include a plurality of grains defined by grain boundaries.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: July 25, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-young Choi, Ho-bum Park
  • Publication number: 20170166208
    Abstract: A method of controlling an electric vehicle transmission includes: a torque-securing step of securing a predetermined spare torque to be generated by a motor in accordance with a current motor torque when a controller determines that there is a need for downshift from an upper gear step to a lower gear step; a slip-controlling step of generating a friction force through a servo clutch applying a friction force between an input shaft and a servo driving gear of a pair of servo gears; a shifting-to-neutral step of shifting to a neutral gear by disengaging a synchronizer for the upper gear step; a motor-synchronizing step of synchronizing a rotational speed of the motor with a desired speed of a lower gear step using the spare torque of the motor secured in the torque-securing step; a gear-engaging step of engaging a synchronizer for the lower gear step; and a clutch-disengaging step of finishing shifting by disengaging the servo clutch.
    Type: Application
    Filed: May 2, 2016
    Publication date: June 15, 2017
    Applicants: Hyundai Motor Company, Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Jong Yun PARK, Kyung Ha KIM, Jae Young CHOI, Yeon Ho KIM, Sung Wha HONG