Patents by Inventor Kyungju Song

Kyungju Song 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).

  • Patent number: 10403360
    Abstract: A nonvolatile protein memory system with optical write/erase and electrical readout capability is provided. The nonvolatile protein memory system includes: a substrate including a microfluidic channel having a pH gradient; a photosensitive protein disposed in the microfluidic channel; and a first electrode and a second electrode disposed on the microfluidic channel and spaced apart from each other and detecting a position change of the photosensitive protein in the microfluidic channel.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: September 3, 2019
    Assignees: KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP, MYONGJI UNIVERSITY INDUSTRY AND ACADEMIA COOPERATION FOUNDATION, HONGIK UNIVERSITY INDUSTRY-ACADEMIA COOPERATION FOUNDATION
    Inventors: Dohyun Kim, Jin Song, Jintae Kim, Minsub Chung, Kyungju Song, Yeji Kim
  • Publication number: 20180350436
    Abstract: A nonvolatile protein memory system with optical write/erase and electrical readout capability is provided. The nonvolatile protein memory system includes: a substrate including a microfluidic channel having a pH gradient; a photosensitive protein disposed in the microfluidic channel; and a first electrode and a second electrode disposed on the microfluidic channel and spaced apart from each other and detecting a position change of the photosensitive protein in the microfluidic channel.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 6, 2018
    Inventors: Dohyun KIM, Jin SONG, Jintae KIM, Minsub CHUNG, Kyungju SONG, Yeji KIM
  • Patent number: 8842948
    Abstract: A terahertz (THz) switch consisting of perfect conductor metamaterials is discussed in this invention. Specifically, we have built a THz logic block by combining two double-sided corrugated waveguides capable of slowing down the electromagnetic waves in the THz regime with a sub-wavelength cavity, having one or more grooves with shorter height than the grooves of the periodic corrugated waveguide. This new type of THz structure is called as the waveguide-cavity-waveguide (WCW). The new invention is based on our mathematical modeling and experimentation that confirms a strong electromagnetic field accumulation inside the tiny cavity which can confine EM field for a long time within a very small effective volume (Veff) to provide high quality (Q) factor. Therefore, an efficient THz switch can be designed to achieve ON-OFF switching functionality by modulating the refractive index n or extinction coefficient ? inside the switching junction.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: September 23, 2014
    Inventors: Pinaki Mazumder, Kyungju Song