Patents by Inventor Jung-Wook CHA

Jung-Wook CHA 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).

  • Negative active material for rechargeable lithium battery, and rechargeable lithium battery including same
    Patent number: 11411213
    Abstract: A negative active material for a rechargeable lithium battery includes a composite carbon particle including a core particle including crystalline-based carbon and a coating layer positioned on the surface of the core particle and including amorphous carbon. A peak intensity (I1620) at 1620 cm?1 ranges from about 0.01 to about 0.1, a peak intensity (I1360) at 1360 cm?1 ranges from about 0.05 to about 0.5, and a peak intensity (I1580 at 1580 cm?1 ranges from about 0.1 to about 0.8 in a Raman spectrum of the composite carbon particle.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: August 9, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jung-Yeon Won, Kyeu-Yoon Sheem, Dae-Seop Lim, Sung-Hwa Eo, Jung-Wook Cha
  • NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
    Publication number: 20150349335
    Abstract: A negative active material for a rechargeable lithium battery includes a composite carbon particle including a core particle including crystalline-based carbon and a coating layer positioned on the surface of the core particle and including amorphous carbon. A peak intensity (I1620) at 1620 cm?1 ranges from about 0.01 to about 0.1, a peak intensity (I1360) at 1360 cm?1 ranges from about 0.05 to about 0.5, and a peak intensity (I1580at 1580 cm?1 ranges from about 0.1 to about 0.8 in a Raman spectrum of the composite carbon particle.
    Type: Application
    Filed: April 20, 2015
    Publication date: December 3, 2015
    Inventors: Jung-Yeon WON, Kyeu-Yoon SHEEM, Dae-Seop LIM, Sung-Hwa EO, Jung-Wook CHA