Patents by Inventor Woojin An

Woojin An 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: 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
  • Publication number: 20170317079
    Abstract: A semiconductor device includes a substrate having an active pattern, a conductive pattern crossing the active pattern, a spacer structure on at least one side surface of the conductive pattern, and a capping structure on the conductive pattern. The capping structure includes a first capping pattern and a second capping pattern. The second capping pattern is disposed on a top surface of the first capping pattern and a top surface of the spacer structure.
    Type: Application
    Filed: January 24, 2017
    Publication date: November 2, 2017
    Inventors: YOONJAE KIM, CHEOL KIM, YONG-HOON SON, JIN-HYUK YOO, WOOJIN JUNG
  • Publication number: 20170309930
    Abstract: A manufacturing device of a membrane-electrode assembly for fuel cell includes a membrane unwinder unwinding and supplying a polymer electrolyte membrane of a roll shape; a film unwinder unwinding and supplying a release film of a roll shape respectively coated with an anode catalyst electrode layer and a cathode catalyst electrode layer with a predetermined interval in an upper and lower sides of the polymer electrolyte membrane; upper and lower bonding rolls respectively disposed at the upper and lower sides of a progressing path of the polymer electrolyte membrane and the release film and pressed to an upper surface and a lower surface of the polymer electrolyte membrane; and a protection film unwinder unwinding and supplying a protection film between adhered surfaces of the release film and the upper and lower bonding rolls.
    Type: Application
    Filed: November 17, 2016
    Publication date: October 26, 2017
    Inventors: MinJin Kim, Jaeseung Lee, Woojin Lee, Seokjung Park, Ki Sub Lee, Yongmin Kim
  • Publication number: 20170303292
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling simultaneous uplink transmissions of a plurality of terminals. To this end, provided are a wireless communication terminal, the terminal including: a transceiver; and a processor, wherein the processor is configured to: generate an uplink packet, wherein a predetermined field of a MAC header of the uplink packet indicates information on uplink data of the terminal, and transmit the generated uplink packet to a base wireless communication terminal, and a wireless communication method using the same.
    Type: Application
    Filed: June 29, 2017
    Publication date: October 19, 2017
    Inventors: Woojin AHN, Yongho KIM, Jinsam KWAK, Juhyung SON
  • Publication number: 20170299079
    Abstract: A denting device for forming a predetermined pattern on a surface near a discharge hole and an intake hole of a valve plate for a compressor includes: a seating jig to which the valve plate is fixed; a processing pin in which a pressing part for pressing the valve plate is formed at a distal end thereof; and a moving unit which is disposed on an upper portion of the seating jig, horizontally moves the processing pin at a constant speed while allowing the processing pin to vertically reciprocate at a constant speed, so as to form the pattern on the valve plate.
    Type: Application
    Filed: July 5, 2017
    Publication date: October 19, 2017
    Inventors: Jeongho KIM, Woojin KIM, Youngshin KIM, Sungtaeg OH, Seungyong HWANG, JangHyun KIM, DuHeyon CHI
  • Patent number: 9793735
    Abstract: The present invention relates to a charger capable of diagnosing a lifespan of a battery when the battery is being charged, and a control method thereof. The charger includes a converter applying one of a perturbation voltage and a perturbation current to a battery, and a digital signal processor transmitting a perturbation signal in which an AC signal is added to a DC signal via the converter, measuring an output response of the battery, calculating an impedance spectrum according to the output response of the battery, calculating an impedance parameter by selecting an equivalent circuit according to the impedance spectrum, and estimating a lifespan of the battery by comparing the calculated impedance parameter of the battery with a predetermined impedance parameter of a reference battery.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: October 17, 2017
    Assignee: Foundation of Soongsil University-Industry Cooperation
    Inventor: Woojin Choi
  • Patent number: 9793817
    Abstract: A multiple output converter is provided. The multiple output converter includes a power conversion circuit and a switching control unit. The power conversion circuit includes an input unit having at least one first switch, a transformer unit configured to convert a magnitude of power from the input unit, an output unit having a plurality of output terminals, which are configured to receive the power from the transformer unit, and a second switch unit having a plurality of second switches, wherein each of the plurality of second switches is installed in each of the plurality of output terminals, respectively, and is controlled in a time division multiple control manner. The switching control is configured to transmit a pulse width modulation signal to the at least one first switch and the plurality of second switches for controlling the at least one first switch and the plurality of second switches in the time division multiple control manner.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 17, 2017
    Assignee: Foundation of Soongsil University-Industry Cooperation
    Inventors: Woojin Choi, Long Tran Van
  • Publication number: 20170295588
    Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes: a transceiver configured for transmitting/receiving a wireless signal; and a processor configured for controlling an operation of the wireless communication terminal. The transceiver receives a first frame indicating that there is data to be transmitted from a base wireless communication terminal to a plurality of wireless communication terminals including the wireless communication terminal and receives data based on the first frame. The base wireless communication terminal is any one wireless communication terminal different from the plurality of wireless communication terminals.
    Type: Application
    Filed: September 15, 2015
    Publication date: October 12, 2017
    Inventors: Woojin AHN, Yongho KIM, Jinsam KWAK, Juhyung SON
  • Patent number: 9786937
    Abstract: A power converter for a fuel cell is provided. The power converter includes a boost converter connected to the fuel cell and configured to control a load voltage at a predetermined magnitude in a normal operation mode and to induce an output response by applying a predetermined perturbation current to the fuel cell in a diagnosis mode, and a digital signal processor configured to extract an impedance parameter by detecting the output response of the fuel cell in the diagnosis mode, and predict a lifespan of the fuel cell according to the impedance parameter. The normal operation mode is configured to supply a voltage in response to a change of a load and the diagnosis mode is configured to predict the lifespan of the fuel cell.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: October 10, 2017
    Assignee: Foundation of Soongsil University-Industry Cooperation
    Inventors: Woojin Choi, Tuan Nguyen Thanh
  • Publication number: 20170287929
    Abstract: The inventive concepts provide semiconductor memory devices and methods for fabricating the same. The semiconductor memory device may include a plurality of gates vertically stacked on a substrate, a vertical channel filling a channel hole vertically penetrating the plurality of gates, and a memory layer vertically extending on an inner sidewall of the channel. The vertical channel may include a lower channel filling a lower region of the channel hole and electrically connected to the substrate, and an upper channel filling an upper region of the channel hole and contacting the lower channel. The upper channel may extend along the memory layer and the lower channel in the upper region of the channel hole and may have a uniform thickness.
    Type: Application
    Filed: September 26, 2014
    Publication date: October 5, 2017
    Inventors: Sunggil KIM, Phil Ouk NAM, Gukhyon YON, Sunghae LEE, Woojin JANG, Dongchul YOO, Hunhyeong LIM, Junggeun JEE, Kihyun HWANG
  • Patent number: 9779663
    Abstract: An organic light emitting display, a method for driving the same, and a method for manufacturing the same are discussed. The organic light emitting display according to an embodiment includes a panel including subpixels each having a compensation circuit including a reference voltage supply transistor, which receives a reference voltage and initializes a node of a gate electrode or a drain electrode of a driving transistor using the reference voltage, a scan driver supplying a scan signal to scan lines of the panel, a data driver supplying a data signal to data lines of the panel, a timing controller that controls the scan driver and the data driver, and a reference voltage compensation unit supplying the reference voltage including a reverse voltage opposite a ripple generated in the reference voltage to the subpixels and cancel the ripple.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 3, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jihun Kim, Sangho Yu, Woojin Nam, Joongsun Yoon, Minkyu Chang
  • Publication number: 20170280514
    Abstract: An induction heating device and a method of controlling the induction heating device are provided. The induction heating device may include a working coil, a power supply to provide an induction voltage to operate the working coil, a temperature sensor to sense a temperature of a cooking utensil, a first lighting unit to emit visually perceivable light, a second lighting unit to emit visually perceivable light, and a controller for controlling the first lighting unit based on the sensed temperature of the cooking utensil transmitted from the temperature sensor.
    Type: Application
    Filed: March 28, 2017
    Publication date: September 28, 2017
    Inventors: Jayoen KIM, Woojin SUH, Joohyeon OH, Yooonjung HONG
  • Patent number: 9774347
    Abstract: An image sensor includes a pixel array, a controller, and a plurality of analog-to-digital converters. The pixel array includes a plurality of pixels coupled to column lines, respectively, and the plurality of pixels are configured to sense incident lights to generate analog signals through the column lines. The controller generate a conversion control signal that is configurable based on changes of at least one operational condition. The plurality of analog-to-digital converters are coupled to the column lines, respectively. The plurality of analog-to-digital converters perform a delta-sigma modulation and a digital filtering to convert the analog signals to digital signals. The plurality of analog-to-digital converters adjust a conversion gain internally in response to the conversion control signal.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: September 26, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Youngcheol Chae, Jae-Hong Kim, Seungwoo Song, Woojin Jo, Hyunseok Hwang
  • Patent number: 9774018
    Abstract: Provided is an energy storage apparatus capable of freely adjusting an energy storage capacity by including a integrated battery platform including a battery, a power relay assembly, and a battery management system; and a battery tray including a battery and coupled to the battery platform to connect the batteries in series with each other.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: September 26, 2017
    Assignee: SK Innovation Co., Ltd.
    Inventors: Hyunseok Kim, Taewoo Kim, Woojin Lee, Jaihyun Choi, Jeehoon Jeon
  • Publication number: 20170269069
    Abstract: Although limited proteolysis of the histone H3 N-terminal tail (H3NT) is frequently observed during mammalian differentiation, the specific genomic sites targeted for H3NT proteolysis and the functional significance of H3NT cleavage remain largely unknown. Here Applicant reports the first method to identify and examine H3NT-cleaved regions in mammals, called ChIP of acetylated chromatin (ChIPac). By applying ChIPac-Seq to an established cell model of osteoclast differentiation, Applicant discovered that H3NT proteolysis is selectively targeted near transcription start sites of a small group of genes and that most H3NT-cleaved genes displayed significant expression changes during osteoclastogenesis. Applicant also discovered that the principal H3NT protease of osteoclastogenesis is matrix metalloproteinase 9 (MMP-9). In contrast to other known H3NT proteases, MMP-9 primarily cleaved H3K18-Q19 in vitro and in cells.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Inventors: Woojin An, Kyunghwan Kim, Vasu Punj
  • Patent number: 9767936
    Abstract: An electrically conductive thin film including a compound represented by Chemical Formula 1 and having a layered crystal structure: AxMyChz??Chemical Formula 1 wherein A is V, Nb, or Ta, M is Ni, Co, Fe, Pd, Pt, Ir, Rh, Si, or Ge, Ch is S, Se, or Te, x is a number from 1 to 3, y is a number from 1 to 3, and z is a number from 2 to 14.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungwoo Hwang, Kimoon Lee, Doh Won Jung, Sang Il Kim, Kyoung-Seok Moon, Woojin Lee
  • Patent number: 9761793
    Abstract: Example embodiments relate to a magnetic memory device that includes a magnetic tunnel junction layer including a first magnetic layer, a second magnetic layer, and a first tunnel barrier layer between the first and second magnetic layers. The second magnetic layer is disposed on the first tunnel barrier layer and is in direct contact with the first tunnel barrier layer. The second magnetic layer includes cobalt-iron-beryllium (CoFeBe). A beryllium content of CoFeBe in the second magnetic layer ranges from about 2 at % to about 10 at %.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: September 12, 2017
    Assignees: Samsung Electronics Co., Ltd., International Business Machines Corporation
    Inventors: Woojin Kim, Keewon Kim, Jaewoo Jeong, Stuart S. P. Parkin, Mahesh Govind Samant
  • Publication number: 20170213904
    Abstract: A semiconductor device includes a semiconductor structure including a substrate, a first semiconductor layer on the substrate, and a second semiconductor layer on the first semiconductor layer, a first passivation pattern provided on the semiconductor structure, and first and second conductive patterns provided on the semiconductor structure and spaced from the first passivation pattern.
    Type: Application
    Filed: January 24, 2017
    Publication date: July 27, 2017
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jeho NA, Hyung Seok LEE, Chi Hoon JUN, Sang Choon KO, Myungjoon KWACK, Young Rak PARK, Woojin CHANG, Hyun-Gyu JANG, Dong Yun JUNG
  • Publication number: 20170208157
    Abstract: A mobile terminal includes first and second bodies, and a folding unit connecting the first and second bodies and disposed to be foldable, wherein the folding unit includes a plurality of sequentially disposed blocks; and a plurality of magnets installed in the plurality of blocks respectively, to generate a magnetic force when the folding unit is folded or unfolded.
    Type: Application
    Filed: January 11, 2017
    Publication date: July 20, 2017
    Applicant: LG ELECTRONICS INC.
    Inventors: Woojin KIM, Sungpil KIM
  • Publication number: 20170196546
    Abstract: An instrument guide device comprises an elongated guide shaft having proximal and distal ends and including an instrument lumen for receiving therethrough a manually operated instrument having an instrument shaft. A distal bendable member is disposed at the distal end of the guide shaft and a proximal bendable member is disposed at the proximal end of the guide shaft. Actuation means extends between the distal and proximal bendable members and provides a bending of the distal bendable member controlled from the proximal bendable member. The proximal bendable member is controlled from the manually operated instrument to cause a corresponding bending of said distal bendable member.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 13, 2017
    Applicant: Cambridge Endoscopic Devices, Inc.
    Inventor: Woojin Lee