Patents by Inventor Won Suck Choi

Won Suck 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: 20250059367
    Abstract: Provided are a polyurethane foam composition with excellent flame retardancy, a polyurethane foam containing the same, and an automotive internal material. Specifically, the polyurethane foam composition, according to an exemplary embodiment of the present disclosure, contains: 50 to 70 wt % of a polyol mixture containing a polyol, a phosphorus-based flame retardant containing hydroxyl groups (—OH) at both terminals, a carbon-based flame retardant, a foaming agent, and an additive; and 30 to 50 wt % of an isocyanate.
    Type: Application
    Filed: January 18, 2024
    Publication date: February 20, 2025
    Applicants: HYUNDAI MOTOR COMPANY, Kia Corporation, Chin Yang Co., Ltd.
    Inventors: Byung Guk Lim, Young Tae Cho, Won Suck Choi, Sung Yoon Lee
  • Patent number: 9671440
    Abstract: There are provided a method and device for detecting a zero phase component. The device for detecting a zero phase component includes a meter chip of a sequential sampling method, a data acquiring unit configured to acquire sequential data on a plurality of phases from the meter chip, and a zero phase current value calculating unit configured to calculate an instantaneous current value for fault detection by summing instantaneous current values for each phase from the acquired sequential data, and calculate a zero phase current value using the calculated instantaneous current value for fault detection.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: June 6, 2017
    Assignee: Korea Electric Power Corporation
    Inventors: Yong Up Park, Won Suck Choi, Byung Sung Lee, Sun Kyu Choi, Kil Sin Kim, Seok Gon Kim, Sang-Jun Kim
  • Publication number: 20140232373
    Abstract: There are provided a method and device for detecting a zero phase component. The device for detecting a zero phase component includes a meter chip of a sequential sampling method, a data acquiring unit configured to acquire sequential data on a plurality of phases from the meter chip, and a zero phase current value calculating unit configured to calculate an instantaneous current value for fault detection by summing instantaneous current values for each phase from the acquired sequential data, and calculate a zero phase current value using the calculated instantaneous current value for fault detection.
    Type: Application
    Filed: September 30, 2011
    Publication date: August 21, 2014
    Applicant: KOREA ELECTRIC POWER CORPORATION
    Inventors: Yong Up Park, Won Suck Choi, Byung Sung Lee, Sun Kyu Choi, Kil Sin Kim, Seok Gon Kim, Sang-Jun Kim