Patents by Inventor Eui-Jae Jung

Eui-Jae Jung 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).

  • Hydrogenation reaction catalyst and preparation method therefor
    Patent number: 11987659
    Abstract: Provided are a hydrogenation reaction catalyst and a preparation method therefor, and more particularly, to a hydrogenation reaction catalyst including sulfur as a promoter, thereby selectively hydrogenating an olefin by changing a relative hydrogenation rate of the olefin and an aromatic group during a hydrogenation reaction of an unsaturated hydrocarbon compound containing an aromatic group, and a preparation method therefor.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 21, 2024
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Bong Sik Jeon, Wan Jae Myeong, Woo Jin Park, Eui Geun Jung
  • Frequency-tunable filter
    Patent number: 9035727
    Abstract: A frequency tunable filter is disclosed. The frequency tunable filter includes a filter unit that can tune a frequency band of a frequency signal being filtered, a communication module that receives a control signal for controlling the tuning of the frequency band, and a control unit that controls the tuning of the frequency band based on the control signals. The disclosed filter can control the tuning of the filter's frequency band wirelessly.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: May 19, 2015
    Assignee: Ace Technologies Corporation
    Inventors: Sang-Ho Han, Sung-Hwan Yun, Eui-Jae Jung
  • FREQUENCY-TUNABLE FILTER
    Publication number: 20120098613
    Abstract: A frequency tunable filter is disclosed. The frequency tunable filter includes a filter unit that can tune a frequency band of a frequency signal being filtered, a communication module that receives a control signal for controlling the tuning of the frequency band, and a control unit that controls the tuning of the frequency band based on the control signals. The disclosed filter can control the tuning of the filter's frequency band wirelessly.
    Type: Application
    Filed: June 22, 2010
    Publication date: April 26, 2012
    Applicant: ACE TECHNOLOGIES CORPORATION
    Inventors: Sang-Ho Han, Sung-Hwan Yun, Eui-Jae Jung