Patents by Inventor Jang-Jin Choi

Jang-Jin 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: 20240170678
    Abstract: Disclosed are an anode including a core part and a binder and a secondary battery including the same. Particularly, a coating layer including a polymer is provided between the core part and the binder and thus blocks electron transport paths from the core part to the binder. Thereby, decomposition of the binder is suppressed, and thus, the charge capacity and the initial Coulombic efficiency of the secondary battery are increased.
    Type: Application
    Filed: March 9, 2023
    Publication date: May 23, 2024
    Inventors: Yong Il Cho, Geun Ho Choi, Hannah Song, Hyun Jin Kim, Hyeon Ha Lee, Chan Bum Park, Jang Wook Choi, Tae Geun Lee, Ji Woo An
  • Patent number: 11923216
    Abstract: An apparatus and method for treating a substrate are provided. The apparatus includes at least one first process chamber configured to supply a developer onto the substrate; at least one second process chamber configured to treat the substrate using a supercritical fluid; a transfer chamber configured to transfer the substrate from the at least one first process chamber to the at least one second process chamber, while the developer supplied in the at least one first process chamber remains on the substrate; and a temperature and humidity control system configured to manage temperature and humidity of the transfer chamber by supplying a first gas of constant temperature and humidity into the transfer chamber.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: March 5, 2024
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEMES CO., LTD.
    Inventors: Seung Min Shin, Sang Jin Park, Hae Won Choi, Jang Jin Lee, Ji Hwan Park, Kun Tack Lee, Koriakin Anton, Joon Ho Won, Jin Yeong Sung, Pil Kyun Heo
  • Patent number: 7215636
    Abstract: A method of determining a training signal so as to facilitate acquisition of symbol sync, frequency offset estimation, and channel estimation in an orthogonal frequency division multiplexing (OFDM) system, and an apparatus and method for receiving a baseband OFDM signal using the training signal are provided.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: May 8, 2007
    Assignee: Dizipia Inc.
    Inventors: Bo-Seok Seo, Jang-Jin Choi
  • Publication number: 20040141457
    Abstract: A method of determining a training signal so as to facilitate acquisition of symbol sync, frequency offset estimation, and channel estimation in an orthogonal frequency division multiplexing (OFDM) system, and an apparatus and method for receiving a baseband OFDM signal using the training signal are provided.
    Type: Application
    Filed: May 8, 2003
    Publication date: July 22, 2004
    Inventors: Bo-Seok Seo, Jang-Jin Choi
  • Patent number: 5815535
    Abstract: A carrier recovery apparatus includes a loop filter that converges quickly and corrects a large frequency error. The carrier recovery apparatus includes a multiplier, a matched filter, a phase error detector, a loop filter and a numerically controlled oscillator (NCO). A bandwidth varying circuit varies the bandwidth of the loop filter according to whether the signal output from the matched filter is phase-locked. A frequency error detector detects a frequency error from the output of the matched filter. An adder adds each level of an input sweep signal and the output of the loop filter, and supplies the added results to the NCO. A switch selectively supplies the output of the loop filter to the adder. A controller generates a sweep signal having a plurality of levels and controls turning the switch on and off.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: September 29, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yang-seok Choi, Jang-jin Choi