Patents by Inventor Dongkyu SEOL

Dongkyu SEOL 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).

  • REFLECTION TYPE X-RAY TUBE
    Publication number: 20200335296
    Abstract: This invention relates to an X-ray tube, and more specifically, relates to a reflection type X-ray tube which enables thermoelectrons emitted from filament to reach a target of an X-ray irradiation window more efficiently.
    Type: Application
    Filed: October 24, 2018
    Publication date: October 22, 2020
    Applicant: SUNJE HI-TEK CO., LTD.
    Inventors: Donghoon LEE, Sanghyo KIM, Eunmin KIM, Jeongdong KIM, Donggil JUNG, Sihwan HEO, Dongkyu SEOL
  • X-ray tube for improving electron focusing
    Patent number: 10734188
    Abstract: Disclosed is an X-ray tube for improving electron focusing, which allows thermoelectrons emitted from a filament to efficiently reach a target of an X-ray irradiation window. To achieve this, the X-ray tube includes: a thermionic emitter configured to emit thermoelectrons by application of a negative high voltage; a focusing tube configured to focus the thermoelectrons emitted from the thermionic emitter; an X-ray irradiation window configured to irradiate X-rays outside by the thermoelectrons bombarded on a target distributed on the X-ray irradiation window, to generate the X-rays after the thermoelectrons pass through the focusing tube; a tube part including both the thermionic emitter and the focusing tube; and a housing surrounding the tube part, wherein the focusing tube and the housing are configured to have a same potential such that movement directions of the thermoelectrons are directed to the X-ray irradiation window.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 4, 2020
    Assignee: Sunje Hi-Tek Co., Ltd.
    Inventors: Dong-Hoon Lee, Sang-Hyo Kim, Eun-Min Kim, Sang-Bong Seo, Dong-Gil Jung, Sih-Wan Heo, Dongkyu Seol
  • X-RAY TUBE FOR IMPROVING ELECTRON FOCUSING
    Publication number: 20190019647
    Abstract: Disclosed is an X-ray tube for improving electron focusing, which allows thermoelectrons emitted from a filament to efficiently reach a target of an X-ray irradiation window. To achieve this, the X-ray tube includes: a thermionic emitter configured to emit thermoelectrons by application of a negative high voltage; a focusing tube configured to focus the thermoelectrons emitted from the thermionic emitter; an X-ray irradiation window configured to irradiate X-rays outside by the thermoelectrons bombarded on a target distributed on the X-ray irradiation window, to generate the X-rays after the thermoelectrons pass through the focusing tube; a tube part including both the thermionic emitter and the focusing tube; and a housing surrounding the tube part, wherein the focusing tube and the housing are configured to have a same potential such that movement directions of the thermoelectrons are directed to the X-ray irradiation window.
    Type: Application
    Filed: October 18, 2017
    Publication date: January 17, 2019
    Inventors: Dong-Hoon LEE, Sang-Hyo KIM, Eun-Min KIM, Sang-Bong SEO, Dong-Gil JUNG, Sih-Wan HEO, Dongkyu SEOL