Patents by Inventor Bu-Hyeon Kim

Bu-Hyeon Kim 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).

  • FLUORINATED SURFACTANT COMPOSITION
    Publication number: 20220186141
    Abstract: Disclosed is a surfactant composition in which at least one of surface tension and interfacial tension is superior, the composition including a fluorinated surfactant and a phospholipid-based surfactant, and optionally further including a sulfosuccinate-based surfactant.
    Type: Application
    Filed: December 2, 2021
    Publication date: June 16, 2022
    Applicant: AK ChemTech CO., LTD.
    Inventors: Hyun Chul Kang, Won Jun Jeong, Bu Hyeon Kim, Hyun Pil Yu, Ki Ho Park, Won Gook Shin, Byung Jo Kim
  • Harmonic current attenuating device of a motor
    Patent number: 5917302
    Abstract: A harmonic current attenuating device of a motor for attenuating a harmonic current generated from the motor by controlling the rotation speed by varying a sine wave voltage into a non-sinusoidal wave by phase-controlling the sine wave voltage, comprises a reactor having an E shape core, a coil wound to the E shape core and an I shape core.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: June 29, 1999
    Assignee: Kwangju Electronics Co., Ltd.
    Inventor: Bu-Hyeon Kim