Patents by Inventor SeoJoo LEE

SeoJoo LEE 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).

  • DEVICE FOR CONVERTING FREQUENCY OF ELECTROMAGNETIC WAVE
    Publication number: 20240039230
    Abstract: The present invention relates to a device for converting a frequency of an electromagnetic wave and, more specifically, to a device for converting an original frequency of an electromagnetic wave into a frequency corresponding to a resonator mode by using a time-varying Fabry-Perot resonator including a time-varying reflective surface of which reflectivity changes with time.
    Type: Application
    Filed: December 7, 2021
    Publication date: February 1, 2024
    Applicants: Korea Advanced Institute of Science And Technology, Center for Advanced Meta-Materials
    Inventors: Bumki MIN, Kang Hee LEE, Seojoo LEE, Soojeong BAEK
  • PARAMETRIC DEVICE COMPRISING OPTICAL MATERIALS SPATIOTEMPORALLY VARYING PERMITTIVITY
    Publication number: 20220057544
    Abstract: A multifunctional parametric device using an optical material in which permittivity is spatiotemporally modulated according to the present invention may be used as a frequency converter and oscillator according to a design characteristic. Since a converted and oscillated frequency is determined according to a modulation frequency of a thin slab of which permittivity is spatiotemporally modulated, a user is capable of actively determining a frequency modulation and oscillation characteristic using the parametric device.
    Type: Application
    Filed: August 20, 2021
    Publication date: February 24, 2022
    Inventors: Bumki MIN, SeoJoo LEE, Jagang PARK, Hyukjoon CHO