Patents by Inventor Dong-Hwi Choi

Dong-Hwi 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).

  • Method for preparing sulfide-based solid electrolyte, sulfide-based solid electrolyte prepared by the method and all-solid-state lithium secondary battery including the sulfide-based solid electrolyte
    Patent number: 11916186
    Abstract: The present invention relates to a method for preparing a sulfide-based solid electrolyte, a sulfide-based solid electrolyte prepared by the method, and an all-solid-state lithium secondary battery including the sulfide-based solid electrolyte. The method of the present invention includes a) mixing Li2S with P2S5 to prepare a mixed powder, b) placing the mixed powder, an ether, and stirring balls in a container, sealing the container, followed by stirring to prepare a suspension, and c) stirring the suspension under high-temperature and high-pressure conditions to prepare sulfide-based solid particles.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: February 27, 2024
    Assignee: SOLIVIS INC.
    Inventors: Dong Wook Shin, Min Yong Eom, Seung Hyun Oh, Chan Hwi Park, Sun Ho Choi
  • Method for producing a visual rhythm using a pixel sampling technique
    Patent number: 6549245
    Abstract: A method for producing a visual rhythm in a video system, includes the steps of: a) sampling a portion of pixels contained at each of frames; and b) producing the visual rhythm summarizing changes of video contents by using the result of the sampling.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: April 15, 2003
    Assignee: Korea Telecom
    Inventors: Jin-Ho Lee, Hyeok-Man Kim, Moon-Haeng Huh, Dong-Hwi Choi, Samuel Moon-Ho Song