Patents by Inventor Je Hwang Ryu

Je Hwang Ryu 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).

  • X-ray source having cooling and shielding functions
    Patent number: 9754758
    Abstract: Disclosed herein is an X-ray source having cooling and shielding functions. The X-ray source includes an X-ray generation unit (100) which has one or more insulation columns (160) and emits X-rays in a vacuum; a cooling unit (180) which is provided around a periphery of the X-ray generation unit and removes heat generated from the X-ray generation unit; and a shielding unit (190) which is provided around a periphery of the cooling unit and shields an area exposed to X-rays other than the areas related to the emission of the X-rays.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: September 5, 2017
    Assignee: University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hun Kuk Park, Je Hwang Ryu, Kyu Chang Park
  • Digital X-ray source
    Patent number: 9728367
    Abstract: The present invention discloses a digital X-ray source.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: August 8, 2017
    Assignee: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Hun Kuk Park, Je Hwang Ryu
  • DIGITAL X-RAY SOURCE
    Publication number: 20150332887
    Abstract: The present invention discloses a digital X-ray source.
    Type: Application
    Filed: July 12, 2013
    Publication date: November 19, 2015
    Inventors: Hun Kuk Park, Je Hwang Ryu
  • X-RAY SOURCE HAVING COOLING AND SHIELDING FUNCTIONS
    Publication number: 20140247923
    Abstract: Disclosed herein is an X-ray source having cooling and shielding functions. The X-ray source includes an X-ray generation unit (100) which has one or more insulation columns (160) and emits X-rays in a vacuum; a cooling unit (180) which is provided around a periphery of the X-ray generation unit and removes heat generated from the X-ray generation unit; and a shielding unit (190) which is provided around a periphery of the cooling unit and shields an area exposed to X-rays other than the areas related to the emission of the X-rays.
    Type: Application
    Filed: August 17, 2012
    Publication date: September 4, 2014
    Applicant: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Hun Kuk Park, Je Hwang Ryu, Kyu Chang Park
  • Field emission display and manufacturing method of the same having selective array of electron emission source
    Patent number: 8172633
    Abstract: The present invention relates to a field emission display and a manufacturing method of the same having selective positioning of electron field emitters. More specifically, the present invention provides a field emission display and a manufacturing method of the same having selective positioning of electron field emitters which can prevent a cross-talk that is a mutual interference phenomenon between pixels and improve uniformity of pixels based on uniform electron emission by deciding positions of carbon nano-tubes which are sources of electron emission and growing carbon nano-tubes before the structure of electrodes is formed, and forming spacers directly on electrodes such that the spacers divide carbon nano-tubes formed uniformly and selectively into pixel units.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: May 8, 2012
    Assignee: Industry Academic Cooperation Fundation of Kyunghee University
    Inventors: Kyu Chang Park, Jin Jang, Je Hwang Ryu
  • FIELD EMISSION DISPLAY AND MANUFACTURING METHOD OF THE SAME HAVING SELECTIVE ARRAY OF ELECTRON EMISSION SOURCE
    Publication number: 20100201251
    Abstract: The present invention relates to a field emission display and a manufacturing method of the same having selective positioning of electron field emitters. More specifically, the present invention provides a field emission display and a manufacturing method of the same having selective positioning of electron field emitters which can prevent a cross-talk that is a mutual interference phenomenon between pixels and improve uniformity of pixels based on uniform electron emission by deciding positions of carbon nano-tubes which are sources of electron emission and growing carbon nano-tubes before the structure of electrodes is formed, and forming spacers directly on electrodes such that the spacers divide carbon nano-tubes formed uniformly and selectively into pixel units.
    Type: Application
    Filed: April 4, 2007
    Publication date: August 12, 2010
    Applicant: INDUSTRY ACADEMIC COOPERATION FOUNDATION OF KYUNGHEE UNIVERSITY
    Inventors: Kyu Chang Park, Jin Jang, Je Hwang Ryu