Patents by Inventor Won-ju Choi

Won-ju 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).

  • Publication number: 20250046806
    Abstract: A positive electrode active material in a form of a single particle is configured so that after a positive electrode, which includes a positive electrode active material layer containing 80 wt % or more of the positive electrode active material based on a total weight of the positive electrode active material layer, is rolled, a density of the positive electrode active material layer after the rolling is 2.7 g/cm3 or more. When the positive electrode active material layer is analyzed by XRD (X-ray diffraction), a ratio of an area of a (003) peak to an area of all peaks identified in a 2? range of 10° to 90° satisfies 30% or more. Also provided is a positive electrode including the same. The positive electrode active material is capable of achieving a battery with improved initial resistance characteristics and life characteristics.
    Type: Application
    Filed: May 22, 2023
    Publication date: February 6, 2025
    Inventors: Won Sig Jung, Jong Pil Kim, Eung Ju Lee, Tae Young Rhee, Hwan Young Choi
  • Patent number: 12206184
    Abstract: An antenna package according to an embodiment includes an antenna unit including a radiator, a transmission line extending from the radiator and an antenna ground pad disposed around the transmission line, and a circuit board electrically connected to the antenna unit. The circuit board includes a core layer, a circuit wiring layer disposed on one surface of the core layer, the circuit wiring layer including a signal transmission wiring electrically connected to the transmission line of the antenna unit and a first ground pattern bonded to the antenna ground pad, and a ground layer disposed on an opposite surface facing the one surface of the core layer. The ground layer does not overlap a portion of the antenna ground pad except for a region bonded to the first ground pattern in a planar view.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: January 21, 2025
    Assignees: DONGWOO FINE-CHEM CO., LTD., POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION
    Inventors: Byung Jin Choi, Na Yeon Kim, Young Ju Kim, Won Bin Hong
  • Patent number: 12207394
    Abstract: A circuit board according to an embodiment includes a core layer including a first region and a second region, and antenna power supply wirings disposed on the core layer over the first region and the second region. The antenna power supply wirings may include a first portion extending in a first direction in the first region, a second portion extending in a second direction in the first region, and a third portion extending in the first direction in the second region, and an interval between the neighboring second portions of the antenna power supply wirings is 3 times or less of an interval between the neighboring third portions of the antenna power supply wirings.
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: January 21, 2025
    Assignees: DONGWOO FINE-CHEM CO., LTD., POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION
    Inventors: Byung Jin Choi, Young Ju Kim, Dong Pil Park, Won Bin Hong
  • Patent number: 12203402
    Abstract: The present invention provides method and apparatus for purifying exhaust gas of a vessel and a vessel including the same, in which a risk for a vessel and crew of being exposed to ammonia gas used to collect carbon dioxide included in exhaust gas emitted from a vessel may be minimized and an ammonia solution may be recycled and reused to collect carbon dioxide, in order to satisfy regulations on discharge of exhaust gas by the IMO. Also, the present invention provides an apparatus 1000 for purifying exhaust gas of a vessel and a method of purifying exhaust gas of a vessel using the same, in which carbon dioxide and sulfur dioxide included in exhaust gas emitted from a vessel may be collected by using a reaction solution and may be changed into a substance that does not affect the environment so as to be stored and transported to land.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: January 21, 2025
    Assignees: HANWHA OCEAN CO., LTD., HI AIR KOREA
    Inventors: Keun Bae Kim, Gwang Hyun Lee, Hyung Ju Roh, Min Woo Lee, Won Kyeong Son, Byung Tak Nam, So Young Choi, Seung Min Jeon
  • Publication number: 20250017975
    Abstract: Proposed is a composition for preventing or treating lung diseases. The composition may contain CD47-overexpressing mesenchymal stem cells as an active ingredient. CD47-overexpressing mesenchymal stem cells, even when not autologous, show a high survival rate in vivo and the ability to migrate to lung tissue, reduce the inflammatory response in lung tissue, and exhibit a fibrosis-inhibiting effect. CD47-overexpressing mesenchymal stem cells can be widely used for the prevention or treatment of various lung diseases related to inflammation or fibrosis of the lungs.
    Type: Application
    Filed: September 21, 2022
    Publication date: January 16, 2025
    Inventors: Yun Sun YANG, Won Il OH, Soo Jin CHOI, Hye Jin JIN, Yun Kyung BAE, Hyang Ju LEE
  • Patent number: 11329250
    Abstract: A display device includes: a display panel including a front surface and a rear surface, the rear side being opposite to the front side; a front stacked structure on the front surface including a front bonding member disposed on the front surface; and a rear stacked structure on the rear surface including a rear bonding member disposed on the rear surface. A loss tangent of the front bonding member has a value greater than a loss tangent of the rear bonding member, the loss tangent being represented by an equation: (loss tangent)=(loss modulus)/(storage modulus), wherein the loss modulus refers to energy lost by viscosity of a material, and the storage modulus refers to energy stored without loss by elasticity of the material.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: May 10, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ju Hee Song, Sang Hyo Park, Byoung Su Lee, Tae Hyeog Jung, Won Ju Choi
  • Publication number: 20210036259
    Abstract: A display device includes: a display panel including a front surface and a rear surface, the rear side being opposite to the front side; a front stacked structure on the front surface including a front bonding member disposed on the front surface; and a rear stacked structure on the rear surface including a rear bonding member disposed on the rear surface. A loss tangent of the front bonding member has a value greater than a loss tangent of the rear bonding member, the loss tangent being represented by an equation: (loss tangent)=(loss modulus)/(storage modulus), wherein the loss modulus refers to energy lost by viscosity of a material, and the storage modulus refers to energy stored without loss by elasticity of the material.
    Type: Application
    Filed: June 29, 2020
    Publication date: February 4, 2021
    Inventors: Ju Hee SONG, Sang Hyo PARK, Byoung Su LEE, Tae Hyeog JUNG, Won Ju CHOI
  • Patent number: 8458266
    Abstract: A decentralized scheduling method in a wireless ad hoc network is provided which includes grouping nodes in the network cluster by cluster, determining a cluster head of each cluster, and sequentially performing scheduling cluster by cluster. Accordingly, it is possible to provide an efficient cluster-based scheduling method which quickly adapts to changes and reduces power consumption.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: June 4, 2013
    Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Wun-cheol Jeong, Jong-moon Chung, Won-ju Choi, Ki-yong Jin, Min-seok Kim, Seong-soon Joo, Jong-suk Chae
  • Publication number: 20100268825
    Abstract: A decentralized scheduling method in a wireless ad hoc network is provided which includes grouping nodes in the network cluster by cluster, determining a cluster head of each cluster, and sequentially performing scheduling cluster by cluster. Accordingly, it is possible to provide an efficient cluster-based scheduling method which is quickly adapt to changes and reduces power consumption.
    Type: Application
    Filed: November 27, 2009
    Publication date: October 21, 2010
    Applicants: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Wun-cheol JEONG, Jong-moon Chung, Won-ju Choi, Ki-yong Jin, Min-seok Kim, Seong-soon Joo, Jong-suk Chae