Patents by Inventor Joon-Ho So

Joon-Ho So 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).

  • FLUORINE-BASED COMPOSITE POLYMER FILM AND PREPARATION METHOD THEREOF
    Publication number: 20240101810
    Abstract: The present invention relates to a composition for forming a composite polymer film, a method for preparing the composition for forming a composite polymer film, a composite polymer film and a method for preparing the composite polymer film. The composition for forming a composite polymer film comprises: a fluorine-based polymer solution comprising a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the fluorine-based polymer solution. The method for preparing the composition for forming a composite polymer film comprises the steps of: preparing a fluorine-based polymer solution comprising a fluorine-based polymer; and dispersing polyvinylidene fluoride nanoparticles in the fluorine-based polymer solution. The composite polymer film comprises: a polymer matrix formed from a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the polymer matrix.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 28, 2024
    Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Eun Ho SOHN, Shin Hong YOOK, Hong Suk KANG, In Joon PARK, Sang Goo LEE, Soo Bok LEE, Won Wook SO, Hyeon Jun HEO, Dong Je HAN, Seon Woo KIM
  • Wideband rectenna and rectifying apparatus for rectenna
    Patent number: 9472849
    Abstract: A rectenna according to the present invention includes a circular-polarized patch antenna having dual slots fed by a microstrip and configured to receive and output a radio frequency (RF) signal, and a rectifying circuit configured to convert for output the RF signal, received by the circular-polarized patch antenna, into a direct current (DC) signal and transfer the DC signal from the antenna to a load, wherein the rectifying circuit comprises at least one radial stub.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: October 18, 2016
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Jin Woo Shin, Jun Ho Choi, Joon Ho So
  • WIDEBAND RECTENNA AND RECTIFYING APPARATUS FOR RECTENNA
    Publication number: 20160094091
    Abstract: A rectenna according to the present invention includes a circular-polarized patch antenna having dual slots fed by a microstrip and configured to receive and output a radio frequency (RF) signal, and a rectifying circuit configured to convert for output the RF signal, received by the circular-polarized patch antenna, into a direct current (DC) signal and transfer the DC signal from the antenna to a load, wherein the rectifying circuit comprises at least one radial stub.
    Type: Application
    Filed: March 12, 2015
    Publication date: March 31, 2016
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Jin Woo SHIN, Jun Ho CHOI, Joon Ho SO
  • Wideband 180 bit phase shifter
    Publication number: 20040021526
    Abstract: A wideband 180° bit phase shifter has a simplified circuit construction by using a grounded switching device. The wideband 180° bit phase shifter includes a Lange coupler having an input port, an output port, a through port and a coupled port; and reflective loads respectively connected to the through port and the coupled port of the Lange coupler in order to reflect inputted radio signals.
    Type: Application
    Filed: July 11, 2003
    Publication date: February 5, 2004
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Myung-Deuk Jeong, Joong-Soo Lim, Joon-Ho So, Hyun-Ik Shin