Patents by Inventor Wook Chang

Wook Chang 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: 10238692
    Abstract: Provided are a pharmaceutical composition for prevention and treatment of a neural disease including at least one selected from the group consisting of mesenchymal stem cells (MSCs), a culture solution of the MSCs, activin A, PF4, decorin, galectin 3, GDF15, glypican 3, MFRP, ICAM5, IGFBP7, PDGF-AA, SPARCL1, thrombospondin-1, WISP1, progranulin, IL-4, a factor inducing expression thereof, and any combination thereof, and a method therefor.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 26, 2019
    Assignee: MEDIPOST CO., LTD
    Inventors: Yoon-Sun Yang, Won II Oh, Jong Wook Chang, Ju Yeon Kim
  • Publication number: 20190025908
    Abstract: Provided is an apparatus and method for controlling a portable terminal. The apparatus includes a contact sensing unit which senses an area of an external surface of the portable terminal contacted by a user as the user holds the portable terminal, a recognizing unit which recognizes a function mode of the portable terminal based on information about the contacted area sensed by the contact sensing unit, and a control unit which changes the portable terminal to a function mode recognized by the recognizing unit. Since a function mode of the portable terminal is controlled according to the way a user holds the portable terminal, convenience of changing a function mode of the portable terminal is provided through a single manipulation.
    Type: Application
    Filed: August 30, 2018
    Publication date: January 24, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jung-hyun SHIM, Kee-eung KIM, Hyun-jin KIM, Joon-ah PARK, Ho-yeal LEE, Hyun-jeong LEE, Wook CHANG, Seung-nyang CHUNG, Sung-jung CHO
  • Patent number: 10167425
    Abstract: The present disclosure relates to an etching solution capable of suppressing particle appearance including a first silane compound in which three or more hydrophilic functional groups are independently bonded to a silicon atom and a second silane compound in which one or two hydrophilic functional groups are independently bonded to a silicon atom.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: January 1, 2019
    Assignee: OCI COMPANY LTD.
    Inventors: Hoseong Yoo, Seunghyun Han, Wook Chang, Yongil Kim
  • Patent number: 10113208
    Abstract: Modified Saccharomyces cerevisiae yeast that produce terminal alkenes are described. The modification of the Saccharomyces cerevisiae yeast includes insertion of at least one heterologous fatty acid decarboxylase gene, deletion of FAA1 and FAA4, overexpression of HEM3, and triple-deletion of CTT1, CTA1 and CCP1. Methods of producing terminal alkenes by culturing and fermenting the modified Saccharomyces cerevisiae yeast and optionally harvesting the terminal alkenes are also described. Mixtures of terminal alkenes produced by the modified Saccharomyces cerevisiae yeast, and methods of metabolically engineering a yeast for optimizing overexpression of one or more alkenes are also described.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: October 30, 2018
    Assignee: National University of Singapore
    Inventors: Matthew Wook Chang, Binbin Chen
  • Patent number: 10114509
    Abstract: A multi-touch device detecting a touch input by using a passive element comprises a plurality of driving electrodes; a plurality of detection electrodes; a plurality of impedances positioned at an intersecting point of the plurality of driving electrodes and the plurality of detection electrodes; and a control unit selecting a first driving electrode and a first detection electrode from the plurality of driving electrodes and the plurality of detection electrodes, outputting a first voltage on the first driving electrode, outputting a second voltage on at least one of the remaining driving electrodes and at least one of the remaining detection electrodes, and detecting a touch input on a first intersecting point of the first driving electrode and the first detection electrode on the basis of a detection voltage detected from the first detection electrode.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: October 30, 2018
    Inventor: Wook Chang
  • Patent number: 10108255
    Abstract: Provided is an apparatus and method for controlling a portable terminal. The apparatus includes a contact sensing unit which senses an area of an external surface of the portable terminal contacted by a user as the user holds the portable terminal, a recognizing unit which recognizes a function mode of the portable terminal based on information about the contacted area sensed by the contact sensing unit, and a control unit which changes the portable terminal to a function mode recognized by the recognizing unit. Since a function mode of the portable terminal is controlled according to the way a user holds the portable terminal, convenience of changing a function mode of the portable terminal is provided through a single manipulation.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 23, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Shim, Kee-eung Kim, Hyun-jin Kim, Joon-ah Park, Ho-yeal Lee, Hyun-jeong Lee, Wook Chang, Seung-nyang Chung, Sung-jung Cho
  • Patent number: 9997112
    Abstract: Present invention is related to a display device and a driving method thereof. In particularly, the present invention is to provide a display device and a driving method thereof, in which a data driver driven at a low frequency which is capable of inverting a polarity of a data voltage in each frame.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 12, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hun Jeoung, Sang Hee Yu, Sung Hyun Cho, Bo Sun Lee, Sung Wook Chang
  • Publication number: 20180151146
    Abstract: Provided are a gate driving circuit and a display device using the same. The gate driving circuit includes a shift register including a plurality of stages. A stage of the stages includes a first transistor configured to charge a first node with a first voltage level of a high voltage terminal of the stage. The first voltage level is higher than a second voltage level of a low voltage terminal of the stage. The stage further includes a control circuit connected to the first transistor. The control circuit is connected to the high voltage terminal and to an output terminal of a previous stage of the shift register. The control circuit is configured to control the first transistor to increase a voltage of the first node to be higher than a third voltage level, which is less than the first voltage level by a threshold voltage of the first transistor.
    Type: Application
    Filed: May 23, 2017
    Publication date: May 31, 2018
    Inventors: Sung Wook CHANG, Se Wan LEE
  • Publication number: 20180151839
    Abstract: An organic light emitting display apparatus that includes a substrate, an organic light emitting unit formed on the substrate, a reflection member disposed on a non-light emitting region of the organic light emitting unit, and a sealing member that seals the organic light emitting unit. The organic light emitting display apparatus can function as a display apparatus or a mirror.
    Type: Application
    Filed: January 15, 2018
    Publication date: May 31, 2018
    Inventors: Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim
  • Patent number: 9976116
    Abstract: The present invention relates to an expression system or a recombinant cell comprising one or more nucleic acid constructs, wherein the one or more nucleic acid constructs comprise: (i) a first gene encoding for one or more protein(s) that activate a quorum sensing system; and (ii) a second gene encoding for one or more lytic protein(s) capable of forming a lesion in a host cell's membrane; wherein the first gene is under control of a first promoter and the second gene is under control of a second promoter, wherein the first promoter controlling the first gene is a carbon starvation-induced promoter and the second promoter is a quorum sensing system promoter induced by the quorum sensing system activated by one or more protein(s) encoded by the first gene as well as recombinant cells hosting such an expression system. Further encompassed is the use of the expression systems and cells of the invention for the expression of gene products of interest and the respective methods of use.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: May 22, 2018
    Assignee: Nanyang Technological University
    Inventors: Matthew Wook Chang, Tat Ming Samuel Lo, Mui Hua Tan
  • Patent number: 9887378
    Abstract: An organic light-emitting display apparatus includes a substrate comprising pixels, each of which comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel, and a plurality of pixel electrodes independently formed for respective sub-pixels; a first common layer commonly formed on the pixels; first lines covering first sub-pixels arranged in a first direction, wherein the first lines comprise a first organic light-emitting layer; a plurality of second lines covering second sub-pixels arranged in the first direction, wherein the second lines comprise a second organic light-emitting layer differing from the first organic light-emitting layer; a second common layer commonly formed on the plurality of pixels, wherein the second common layer comprises a third organic light-emitting layer differing from the first organic light-emitting layer and the second organic light-emitting layer; a third common layer commonly formed on the pixels; and an opposite electrode commonly formed on the pixels.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: February 6, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Seung-Wook Chang
  • Patent number: 9882166
    Abstract: An organic light emitting display apparatus that includes a substrate, an organic light emitting unit formed on the substrate, a reflection member disposed on a non-light emitting region of the organic light emitting unit, and a sealing member that seals the organic light emitting unit. The organic light emitting display apparatus can function as a display apparatus or a mirror.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: January 30, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim
  • Patent number: 9845241
    Abstract: The present invention relates to a method of purifying yellow phosphorus, and more particularly, to a method of effectively removing impurities from yellow phosphorus used as raw materials of a phosphoric acid to increase purity of the phosphoric acid, the method including: removing impurities from the phosphoric acid by adding an oxidizing agent to the yellow phosphorus, followed by stirring; and adding a solution including an additive having a specific functional group in a chemical structure to the yellow phosphorus from which the impurities are removed, followed by stirring.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: December 19, 2017
    Assignee: OCI COMPANY LTD.
    Inventors: Seung-Hyun Han, Wook Chang, Yeon-Hee Lee
  • Publication number: 20170321121
    Abstract: The present disclosure relates to an etching solution capable of suppressing particle appearance including a first silane compound in which three or more hydrophilic functional groups are independently bonded to a silicon atom and a second silane compound in which one or two hydrophilic functional groups are independently bonded to a silicon atom.
    Type: Application
    Filed: May 2, 2017
    Publication date: November 9, 2017
    Inventors: Hoseong Yoo, Seunghyun Han, Wook Chang, Yongil Kim
  • Publication number: 20170285856
    Abstract: A method of controlling the operation of a mobile terminal is provided. By dynamically selecting or setting a specific function of a mobile terminal according to a change in pressure or contact areas sensed by a plurality of touch sensors which cover the mobile terminal, a user can easily select or set a specific function of the mobile terminal according to his or her intention, and easily recognize information displayed on a screen of the mobile terminal.
    Type: Application
    Filed: June 22, 2017
    Publication date: October 5, 2017
    Inventors: Wook CHANG, Joon-Ah PARK, Hyun-Jeong LEE
  • Publication number: 20170277354
    Abstract: A multi-touch device detecting a touch input by using a passive element comprises: a plurality of driving electrodes; a plurality of detection electrodes; a plurality of impedances positioned at an intersecting point of the plurality of driving electrodes and the plurality of detection electrodes; and a control unit selecting a first driving electrode and a first detection electrode from the plurality of driving electrodes and the plurality of detection electrodes, outputting a first voltage on the first driving electrode, outputting a second voltage on at least one of the remaining driving electrodes and at least one of the remaining detection electrodes, and detecting a touch input on a first intersecting point of the first driving electrode and the first detection electrode on the basis of a detection voltage detected from the first detection electrode.
    Type: Application
    Filed: August 12, 2015
    Publication date: September 28, 2017
    Inventor: Wook CHANG
  • Patent number: 9733757
    Abstract: A method of controlling the operation of a mobile terminal is provided. By dynamically selecting or setting a specific function of a mobile terminal according to a change in pressure or contact areas sensed by a plurality of touch sensors which cover the mobile terminal, a user can easily select or set a specific function of the mobile terminal according to his or her intention, and easily recognize information displayed on a screen of the mobile terminal.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: August 15, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wook Chang, Joon-Ah Park, Hyun-Jeong Lee
  • Publication number: 20170221411
    Abstract: Provided are a display panel including a scan driver and a method of operating the same. The display panel includes a shift register including a plurality of stages that shifts and outputs a clock signal. A display area in the display panel is divided into a plurality of driving areas. The stages of the shift register corresponding to each driving area form a stage group. In each stage group, the stages included in the stage group sequentially output a scan signal by using an independent start signal.
    Type: Application
    Filed: December 9, 2015
    Publication date: August 3, 2017
    Applicant: LG Display Co., Ltd.
    Inventor: Sung Wook CHANG
  • Patent number: 9663800
    Abstract: Recombinant cell expressing at least one heterologous alkane exporter protein comprising an ATP binding cassette (ABC), wherein the ABC comprises of an amino acid consensus sequence as set forth in SEQ ID No. 1. The use and method of producing or increasing resistance to biofuels with the same.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: May 30, 2017
    Assignee: Nanyang Technological University
    Inventors: Matthew Wook Chang, Binbin Chen
  • Patent number: 9657698
    Abstract: Disclosed herein is a vehicle fuel pump module. The vehicle fuel pump module is configured such that a controller is spaced apart from a plate body installed so as to be exposed out of a fuel tank by a support member and an air gap is provided between the plate body and the controller. Consequently, a gas generated from a fuel in the fuel tank is discharged to the atmosphere by an outdoor air circulating the air gap and thus it may be possible to prevent the gas from affecting electronic parts of the controller.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: May 23, 2017
    Assignee: Hyundam Industrial Co., Ltd.
    Inventors: Kyoung Sik Park, Kwan Beom Oh, Won Sang Cho, Jin Wook Chang