Patents by Inventor in hwan RYU

in hwan RYU 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: 20170365868
    Abstract: A fuel cell system having a fuel cell control module (FCU) and a method of controlling the same are provided. The method includes selecting one of at least one control parameter and learning system efficiency at each of at least one configurable candidate value of the selected control parameter based on supplied current by driving the fuel cell system. Additionally, the method includes determining a value of the selected control parameter by comparing the system efficiency at each of the at least one configurable candidate value of the selected control parameter with system efficiency corresponding to an initial performance index, at each of at least one predetermined representative current point. Thereby, efficiency of the fuel cell system is improved.
    Type: Application
    Filed: December 19, 2016
    Publication date: December 21, 2017
    Inventors: Jung Hwan Ryu, Soon Il Jeon
  • Patent number: 9830033
    Abstract: A touch sensor includes a touch substrate including a touch sensing area and a non-sensing area outside the touch sensing area, touch electrodes disposed in the touch sensing area and configured to sense a touch, and touch wiring connected to the touch electrodes in the non-sensing area, in which the touch wiring includes a first wiring conductive layer, a second wiring conductive layer disposed on the first wiring conductive layer, and transparent layers disposed at first and second sides of the second wiring conductive layer and on the first wiring conductive layer.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: November 28, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Ha Son, Jae Neung Kim, Yong-Hwan Ryu, Yun Jong Yeo, Joo Hyung Lee, Yu-Gwang Jeong
  • Publication number: 20170329393
    Abstract: An apparatus for generating a tactile sensation comprises: a tactile sensation generating unit including a magnetorheological fluid, of which the shape changes according to a magnetic field and which comes in contact with a user's body, and a first magnet which is arranged to be surrounded with the magnetorheological fluid, which increases the amount of change of the magnetorheological fluid by the magnetic field thereof, and of which the position changes according to a change in a magnetic field generated by an external source; a magnetic field forming unit for selectively forming a magnetic field around the tactile sensation generating unit; and a control unit which outputs a signal for forming a magnetic field to the magnetic field forming unit when a user's body in contact with the tactile sensation generating unit reaches the surface of a virtual object.
    Type: Application
    Filed: August 23, 2016
    Publication date: November 16, 2017
    Applicant: KOREA UNIVERSITY OF TECHNOLOGY AND EDUCATION INDUS TRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Jee Hwan RYU, Harsimran SINGH
  • Publication number: 20170317366
    Abstract: A pinhole determination method for a fuel cell includes steps of: blocking air supply to a fuel cell stack by a controller; measuring a cell voltage value of each of unit fuel cells of the fuel cell stack; and determining whether or not a pinhole is present by comparing the cell voltage value with an average cell voltage value.
    Type: Application
    Filed: August 8, 2016
    Publication date: November 2, 2017
    Inventors: Jung Hwan Ryu, Soon Woo Kwon
  • Publication number: 20170309935
    Abstract: A power distribution method and system for a fuel cell vehicle is provided. The method includes deducing an amount of moisture in a stack of a fuel cell, when a supply amount of air of the stack of the fuel cell is decreased and determining a state of the fuel cell based on the amount of moisture. Additionally, the method includes deducing allowance power of a regenerative braking of a driving motor using maximum power of the regenerative braking of an air compressor and chargeable power of a high voltage battery based on the determined state. The regenerative braking of the driving motor is then adjusted to prevent actual power of the regenerative braking of the driving motor from exceeding the allowance power of the regenerative braking.
    Type: Application
    Filed: August 19, 2016
    Publication date: October 26, 2017
    Inventors: Dong Hun Lee, Jung Hwan Ryu
  • Publication number: 20170280553
    Abstract: A flexible electronic device including a substrate and a line layer disposed on the substrate. The line layer includes a first conductive layer disposed on the substrate, a plurality of polymer walls disposed on the first conductive layer and spaced apart from each other in a horizontal direction parallel to the substrate, and a second conductive layer including first portions disposed between the polymer walls and a second portion disposed on the polymer walls. A portion of the first conductive layer contacts the first portions.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 28, 2017
    Inventors: Jaeneung KIM, Jungha SON, Yong-hwan RYU
  • Publication number: 20170269724
    Abstract: A display device including a display panel configured to display an image and having a folding area by which the display panel is configured to be folded along a folding axis, and a touch member disposed on the display panel and configured to detect an external touch signal. The touch member includes a plurality of first conductive patterns disposed to overlap the folding area, in which each of the first conductive patterns includes a fiber layer including a plurality of nanofibers, and the nanofibers includes a plurality of cavities.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Inventors: Jungha SON, Jaeneung KIM, Yong-hwan RYU
  • Publication number: 20170242515
    Abstract: Provided is a touch member includes a folding region folded around a folding axis and a non-folding region adjacent to the folding region. The touch member includes a first conductive pattern disposed in the folding region and a second conductive pattern disposed in the non-folding region. The touch member also includes an air gap defined inside the first conductive pattern.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 24, 2017
    Inventors: JUNGHA SON, JAENEUNG KIM, YONG-HWAN RYU, SANGKYU CHOI, JIHUN KIM, HANYUNG JUNG
  • Publication number: 20170197244
    Abstract: Metal nanoparticles according to the present invention have at least a bimodal size distribution in which the ratio obtained by dividing the area of a first peak, which has the smallest median size on the basis of the median size of peaks in the size distribution of the metal nanoparticles, by the total area of all peaks constituting the size distribution meets 0.4-0.8, and are capped with a capping layer containing an organic acid.
    Type: Application
    Filed: May 29, 2015
    Publication date: July 13, 2017
    Inventors: Young Min CHOI, Eun Jung LEE, Sun Ho JEONG, Yeong Hui SEO, Beyong Hwan RYU, Su Yeon LEE
  • Publication number: 20170199597
    Abstract: A flexible touch sensing unit may include a substrate including an active touch region and an inactive region surrounding the active touch region, a plurality of first sensing electrodes disposed on the active touch region and extending along a first direction, a plurality of second sensing electrodes disposed on the active touch region and extending along a second direction, and a plurality of sensing lines disposed on the inactive region and electrically connected to the first sensing electrodes and the second sensing electrodes. Each of the sensing lines may include a first metal layer, a first conductive layer disposed on the first metal layer, and a second metal layer disposed on the first conductive layer. Each of the first sensing electrodes may include a third metal layer, and each of the second sensing electrodes may include a fourth metal layer. The first conductive layer may include a self-assembled monolayer.
    Type: Application
    Filed: December 13, 2016
    Publication date: July 13, 2017
    Inventors: Jung-Ha SON, Jea-Neung KIM, Yong-Hwan RYU
  • Publication number: 20170187658
    Abstract: An electronic device can include a display, a communication interface comprising communication circuitry, and a processor comprising processing circuitry. The processor can be configured to receive a plurality of images comprising a first image and a second image in a first order from an external electronic device using the communication circuitry of the communication interface, arrange the first image and the second image in a second order based on first property information corresponding to the first image and second property information corresponding to the second image, and arrange and display the first image and the second image in the second order through the display.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 29, 2017
    Inventors: Young-Hwan RYU, Dong-Ho JANG
  • Patent number: 9649533
    Abstract: A muscular strength enhancing robot to be driven by an intention of a user and a method of driving the robot are disclosed. The robot includes an actuator attached to a portion of a body of the user and configured to be actuated by enhancing a muscular strength, an encoder connected to the actuator and configured to measure an actual velocity at which the actuator moves, a force or torque sensor configured to measure an intensity of a force to be applied, an admittance modeling module configured to calculate a target velocity using the intensity of the force, and a proportional integral derivative (PID) control module configured to control actuation of the actuator in proportion to a velocity difference between the target velocity and the actual velocity, control the actuation by a cumulative value of the velocity difference, and control the actuation by a difference between a previous and a current velocity difference.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 16, 2017
    Assignee: Korea Polytechnic University Industry Academic Corporation Foundation
    Inventors: Eung-Hyuk Lee, Jee-Hwan Ryu, Su-Hong Eom, Seoung-Jun Lee
  • Publication number: 20170068032
    Abstract: A wire grid polarizer plate includes: a transparent substrate through which incident light is transmitted; and a partition wall member on the transparent substrate and at which first polarized light is transmitted and second polarized light perpendicular to the first polarized light is reflected. The partition wall member is defined by: first partition walls spaced apart from each other on the transparent substrate, the first partition walls formed of a first metal; second partition walls respectively on the first partition walls, the second partition walls formed of a second metal having strength greater than that of the first metal; and third reinforced partition walls respectively on the second partition walls and having a stepped cross-sectional structure, the third partition walls formed of an oxide of the first metal, the oxide of the first metal having strength greater than the strength of the second metal.
    Type: Application
    Filed: February 19, 2016
    Publication date: March 9, 2017
    Inventors: Jung Ha SON, Jae Neung KIM, Yong Hwan RYU
  • Publication number: 20170042704
    Abstract: Provided is an exoskeleton-type glove including: a glove type outer cover; a guide provided at a corresponding position between finger joints of a human body on the outer cover; a wire extended along the guide; an actuation module including an actuator that allows the finger joint of the human body to move by controlling an extension length of the wire and provided at a back side of a hand of the human body; and a buffer provided below the actuation module.
    Type: Application
    Filed: February 10, 2015
    Publication date: February 16, 2017
    Applicant: KOREA UNIVERSITY OF TECHNOLOGY AND EDUCATION INDUSTRY-UNIVERSITY COOPERATION
    Inventors: Jee-Hwan RYU, Dmitry POPOV, Igor GAPONOV
  • Patent number: 9566173
    Abstract: Provided is a motion control device. The device comprises one or more frames which supports an exoskeleton of a body; a string which connects the frames with each other; a pulley which is disposed between the frames and connected to one end of the string; and a motor which is connected to the other end of the string to control the string, wherein the pulley rotates the string according to control of the motor.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 14, 2017
    Assignee: KOREA UNIVERSITY OF TECHNOLOGY AND EDUCATION INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Jee Hwan Ryu, Dmitry Popov, Igor Gaponov
  • Patent number: D773235
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: December 6, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Jae Hun Chung, In Hwan Ryu, Sang Woo Kim
  • Patent number: D779876
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: February 28, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jae Hun Chung, In Hwan Ryu, Sang Woo Kim
  • Patent number: D780511
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: March 7, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jae Hun Chung, In Hwan Ryu, Sang Woo Kim
  • Patent number: D781638
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: March 21, 2017
    Assignee: LG Electronics Inc.
    Inventors: Jae Hun Chung, In Hwan Ryu, Sang Woo Kim
  • Patent number: D792752
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: July 25, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jae Hun Chung, In Hwan Ryu, Sang Woo Kim