Patents by Inventor Chang Kyu Rhee

Chang Kyu Rhee 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).

  • Publication number: 20200134383
    Abstract: An apparatus for training an image generative model and an image generating apparatus are provided. The apparatus generates output images from a plurality of input images based on the generative model, extracts depth features from the respective output images based on a depth classification model, calculates a depth loss from the extracted depth features, and trains the generative model based on an overall loss that includes the calculated depth loss.
    Type: Application
    Filed: October 8, 2019
    Publication date: April 30, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seon Min RHEE, Minsu KO, Jihye KIM, Byung In YOO, Chang Kyu CHOI, Jaejoon HAN
  • Patent number: 8318045
    Abstract: Disclosed is a radiation shielding member having improved radiation absorption performance, including 80.0˜99.0 wt % of a polymer matrix or metal matrix and 1.0˜20.0 wt % of a radiation shielding material in the form of nano-particles having a size of 10˜900 nm as a result of pulverization, wherein the radiation shielding material is homogeneously dispersed in the matrix through powder mixing or melt mixing after treatment with a surfactant which is the same material as the matrix or which has high affinity for the matrix. A preparation method thereof is also provided. This radiation shielding member including the nano-particles as the shielding material further increases the collision probability of the shielding material with radiation, compared to conventional shielding members including micro-particles, thus reducing the mean free path of radiation in the shielding member, thereby exhibiting superior radiation shielding effects.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: November 27, 2012
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Jaewoo Kim, Young Rang Uhm, Byungchul Lee, Jinwoo Jung, Chang Kyu Rhee, Min-Ku Lee, Hee Min Lee, Sang Hoon Lee
  • Patent number: 8128794
    Abstract: A water pollution sensor for detecting a heavy metal, the water pollution sensor including: a base member; a conductive layer formed at a portion of one of surfaces of the base member and consisting of a conductive material; an insulating layer formed on the conductive layer to enable a portion of the conductive layer to be exposed; and a bismuth layer formed on a portion of the exposed conductive layer and including bismuth powders.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: March 6, 2012
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Chang Kyu Rhee, Gyoung-Ja Lee, Hi Min Lee, Min Ku Lee, Sang-Hoon Lee, Sung Mo Hong, Jong Keuk Lee, Ju Myoung Kim
  • Patent number: 8038979
    Abstract: Disclosed is a method of manufacturing a metal oxide nano powder comprising preparing a first dispersed solution by adding a nano-sized metal powder to water and dispersing the metal powder within the water, performing a hydration reaction of the first dispersed solution at a temperature of about 30 to about 70° C. to generate a precipitation, and filtering and drying the precipitation to prepare a metal oxide powder. Also, disclosed is a metal oxide nano powder manufactured by the method described above, and having any one of a bar-form, a cube-form, and a fiber-form.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: October 18, 2011
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Chang Kyu Rhee, Min Ku Lee, Young Rang Uhm, Jin Ju Park, Byung Sun Han, Hi Min Lee, Seung-Hee Woo
  • Patent number: 8025983
    Abstract: A joining method between Fe-based steel and Ti/Ti-based alloys having a joint strength higher than those of base metals by using interlayers. The production of intermetallic compounds at a joint portion between Fe-based steel and Ti/Ti-based alloys can be prevented using interlayers, and strong interface diffusion bonding can be formed at interfaces between interlayers, thereby producing a high-strength joint. Accordingly, the present disclosure can be used to develop high-strength, high-functional advanced composite materials.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: September 27, 2011
    Inventors: Min Ku Lee, Jung Gu Lee, Jin-Ju Park, Chang-Kyu Rhee
  • Publication number: 20100124669
    Abstract: A joining method between Fe-based steel and Ti/Ti-based alloys having a joint strength higher than those of base metals by using interlayers. The production of intermetallic compounds at a joint portion between Fe-based steel and Ti/Ti-based alloys can be prevented using interlayers, and strong interface diffusion bonding can be formed at interfaces between interlayers, thereby producing a high-strength joint. Accordingly, the present disclosure can be used to develop high-strength, high-functional advanced composite materials.
    Type: Application
    Filed: July 16, 2009
    Publication date: May 20, 2010
    Applicants: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd.
    Inventors: Min Ku Lee, Jung Gu Lee, Jin-Ju Park, Chang-Kyu Rhee
  • Publication number: 20100102279
    Abstract: Disclosed is a radiation shielding member having improved radiation absorption performance, including 80.0˜99.0 wt % of a polymer matrix or metal matrix and 1.0˜20.0 wt % of a radiation shielding material in the form of nano-particles having a size of 10˜900 nm as a result of pulverization, wherein the radiation shielding material is homogeneously dispersed in the matrix through powder mixing or melt mixing after treatment with a surfactant which is the same material as the matrix or which has high affinity for the matrix. A preparation method thereof is also provided. This radiation shielding member including the nano-particles as the shielding material further increases the collision probability of the shielding material with radiation, compared to conventional shielding members including micro-particles, thus reducing the mean free path of radiation in the shielding member, thereby exhibiting superior radiation shielding effects.
    Type: Application
    Filed: May 12, 2009
    Publication date: April 29, 2010
    Applicant: Korea Atomic Energy Research Institute
    Inventors: Jaewoo KIM, Young Rang UHM, Byungchul LEE, Jinwoo JUNG, Chang Kyu RHEE, Min-Ku LEE, Hee Min LEE, Sang Hoon LEE
  • Publication number: 20080283395
    Abstract: A water pollution sensor for detecting a heavy metal, the water pollution sensor including: a base member; a conductive layer formed at a portion of one of surfaces of the base member and consisting of a conductive material; an insulating layer formed on the conductive layer to enable a portion of the conductive layer to be exposed; and a bismuth layer formed on a portion of the exposed conductive layer and including bismuth powders.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Inventors: Chang Kyu Rhee, Min Ku Lee, Young Rang Uhm, Hi Min Lee, Jin Ju Park, Gyoung-Ja Lee, Eun Jin Chae
  • Publication number: 20080193760
    Abstract: Disclosed is a method of manufacturing a metal oxide nano powder comprising preparing a first dispersed solution by adding a nano-sized metal powder to water and dispersing the metal powder within the water, performing a hydration reaction of the first dispersed solution at a temperature of about 30 to about 70° C. to generate a precipitation, and filtering and drying the precipitation to prepare a metal oxide powder. Also, disclosed is a metal oxide nano powder manufactured by the method described above, and having any one of a bar-form, a cube-form, and a fiber-form.
    Type: Application
    Filed: November 6, 2007
    Publication date: August 14, 2008
    Inventors: Chang Kyu Rhee, Min Ku Lee, Young Rang Uhm, Jin Ju Park, Byung Sun Han, Hi Min Lee, Seung-Hee Woo
  • Patent number: 6517804
    Abstract: The present invention relates to titanium dioxide powder with a large specific surface area, a method for preparing thereof, and a use of the titanium dioxide as a photocatalyst, and more particularly, discloses a method for the preparation of titanium dioxide powder comprised of the steps of adding ice pieces or icy distilled water to pure titanium tetrachloride (TiCl4) to give an aqueous titanylchloride solution of 1.5 M or higher; diluting the aqueous titanylchloride with distilled water; obtaining precipitates from the diluted aqueous titanylchloride solution by standing for 2-20 hours at 15-70° C.; and filtering, washing and drying the above precipitates to give downy hair-shaped TiO2 powder with a specific surface area of 130-200 m2/g.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: February 11, 2003
    Assignees: Korea Atomic Energy Institute, Nano Chemical Co., Ltd.
    Inventors: Sun-Jae Kim, Soon Dong Park, Chang Kyu Rhee, Whung Whoe Kim, Il Hiun Kuk