Patents by Inventor Yun-Ki Choi

Yun-Ki Choi 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: 9944544
    Abstract: Disclosed is a 3-dimensional porous mono-polar electrode body that includes a 3-dimensional porous parent substance, which has a 3-dimensional structure including a side and a remaining side that communicate with each other via a plurality of pores arranged in multiple layers and which is made of a metal material to have dimensional stability, and an electrode catalyst layer applied on the 3-dimensional porous parent substance. The 3-dimensional porous mono-polar electrode body is used to remove microorganisms contained in treatment water to thus minimize the consumption of power, which is required to remove the microorganisms, prevent secondary pollution, and ensure the durability of an electrode.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: April 17, 2018
    Assignees: Elchemtech Co., Ltd.
    Inventors: Sang Bong Moon, Hye Young Jung, Yun Ki Choi, So Young Kim, Dae Jin Yoon, Ja Young Kim, Su Hyun Im, Min Ah Song, Tae Lim Lee, Chang Hwan Moon, Ji Yeong Kim, Jun Young Lee, Sung Won Choi
  • Publication number: 20180062225
    Abstract: A battery module including an array of cooling fins having different thicknesses is provided. The battery module includes: a plurality of battery units arranged in one direction; a plurality of cooling fins between adjacent battery units; and a heat sink coupled to ends of the plurality of cooling fins, wherein each cooling fin has a structure in which a pair of sub-cooling fins are face-to-face coupled to each other, and thicknesses of the plurality of cooling fins are reduced toward the side region from the central region due to a difference in a thickness of at least one of the pair of sub-cooling fins. Since heat is not accumulated at the central region, the battery module has uniform temperature distribution while being charged or discharged.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 1, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jung-Been YOU, Jung-Hang LEE, Bo-Hyon KIM, Hyun-Young CHO, Yun-Ki CHOI, Jong-Soo HA
  • Publication number: 20180051380
    Abstract: Disclosed is a reinforced composite membrane for water electrolysis, and a membrane electrode assembly having the same. More particularly, the present invention relates to a reinforced composite membrane for water electrolysis, and a membrane electrode assembly (MEA), wherein a two-dimensionally woven fabric base, layer that, minimizes swelling of the membrane in the X-axis and Y-axis directions is covered on a hydrogen electrode to which high pressure is applied or on hydrogen and oxygen electrodes by three-dimensionally electrospun reinforcing fiber layers, the reinforcing fiber layers minimizing swelling of the membrane in the Z-axis direction, thereby reducing permeation of oxygen (O2) via the hydrogen electrode and enabling operation under high pressure due to high dimensional stability.
    Type: Application
    Filed: August 25, 2016
    Publication date: February 22, 2018
    Inventors: Dae Jin YOON, Sang Bong MOON, Hye Young JUNG, Chang Hwan MOON, Yun Ki CHOI
  • Publication number: 20180047954
    Abstract: According to an aspect of the present disclosure, there is provided a cell cover for a secondary battery, which accommodates at least one secondary battery in an internal space and is mounted in a groove formed on a top surface of a cooling plate having an uneven plate shape, the cell cover including a first side plate and a second side plate facing each other to form opposite side surfaces of the internal space, a top plate forming a top surface of the internal space and connecting upper edges of the first side plate and the second side plate, and a first bottom plate extending from a lower edge of the first side plate and a second bottom plate extending from a lower edge of the second side plate to face the first bottom plate, the first bottom plate and the second bottom plate forming a bottom surface of the internal space, in which the first bottom plate and the second bottom plate are inclined downwardly at an angle with respect to a horizontal plane, respectively.
    Type: Application
    Filed: June 14, 2016
    Publication date: February 15, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Ha-Neul YOO, Jong-Soo HA, Sang-Il SON, Yun-Ki CHOI, Hang-June CHOI
  • Publication number: 20170352933
    Abstract: Provided herein is a battery module that is capable of improving cooling efficiency despite a compact structure without using numerous members. The battery module according to the present disclosure includes a battery stack where batteries are stacked; and a battery management system, and includes a heat radiation paint coating layer that includes a heat radiation material in at least a portion of the constituting components.
    Type: Application
    Filed: January 28, 2016
    Publication date: December 7, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Yun-Ki CHOI, Jong-Soo HA, Sang-Il SON, Ha-Neul YOO
  • Publication number: 20170271697
    Abstract: Disclosed is a membrane electrode assembly that includes a polymer electrolyte membrane, a first electrochemical reaction layer formed on one side of the polymer electrolyte membrane to allow an oxidation reaction to occur thereon, a first electron-conductive layer formed between the polymer electrolyte membrane and the first electrochemical reaction layer, a second electrochemical reaction layer formed on a remaining side of the polymer electrolyte membrane to allow a reduction reaction to occur thereon, and a second electron-conductive layer formed between the polymer electrolyte membrane and the second electrochemical reaction layer.
    Type: Application
    Filed: March 25, 2016
    Publication date: September 21, 2017
    Inventors: Sang Bong MOON, Hye Young JUNG, Yun Ki CHOI, Chang Hwan MOON
  • Publication number: 20170267552
    Abstract: Disclosed is a 3-dimensional porous mono-polar electrode body that includes a 3-dimensional porous parent substance, which has a 3-dimensional structure including a side and a remaining side that communicate with each other via a plurality of pores arranged in multiple layers and which is made of a metal material to have dimensional stability, and an electrode catalyst layer applied on the 3-dimensional porous parent substance. The 3-dimensional porous mono-polar electrode body is used to remove microorganisms contained in treatment water to thus minimize the consumption of power, which is required to remove the microorganisms, prevent secondary pollution, and ensure the durability of an electrode.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 21, 2017
    Inventors: Sang Bong MOON, Hye Young JUNG, Yun Ki CHOI, So Young KIM, Dae Jin YOON, Ja Young KIM, Su Hyun IM, Min Ah SONG, Tae Lim LEE, Chang Hwan MOON, Ji Yeong KIM, Jun Young LEE, Sung Won CHOI
  • Patent number: 8970014
    Abstract: Semiconductor devices and methods of forming the semiconductor device are provided, the semiconductor devices including a first dielectric layer on a substrate, and a second dielectric layer on the first dielectric layer. The first dielectric layer has a carbon concentration lower than the second dielectric layer.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ha-jin Lim, Hyung-Suk Jung, Yun-Ki Choi
  • Publication number: 20140001606
    Abstract: Semiconductor devices and methods of forming the semiconductor device are provided, the semiconductor devices including a first dielectric layer on a substrate, and a second dielectric layer on the first dielectric layer. The first dielectric layer has a carbon concentration lower than the second dielectric layer.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 2, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ha-jin LIM, Hyung-Suk JUNG, Yun-Ki CHOI
  • Patent number: 8557713
    Abstract: Semiconductor devices and methods of forming the semiconductor device are provided, the semiconductor devices including a first dielectric layer on a substrate, and a second dielectric layer on the first dielectric layer. The first dielectric layer has a carbon concentration lower than the second dielectric layer.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: October 15, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ha-Jin Lim, Hyung-Suk Jung, Yun-Ki Choi
  • Publication number: 20120267242
    Abstract: The present invention relates to a spherical electrode and to a spherical electrode cell, and more particularly, to a method for forming an electrode on an ion-exchange resin or forming an electrolysis cell on an ion-exchange resin. The spherical electrode or spherical electrolysis cell of the present invention can be used for: electrolysis reactors, for example in hydrolysis for producing hydrogen and oxygen gas; for the production of oxidants by means of the electrolysis of electrolytes such as a sodium chloride solution and sodium chlorite; or fuel cells that generate electricity using oxygen and hydrogen.
    Type: Application
    Filed: November 26, 2009
    Publication date: October 25, 2012
    Applicants: ELCHEM TECH CO, LTD.
    Inventors: Sang Bong Moon, Tae-Lim Lee, Eun-Soo Kim, Yun-Ki Choi
  • Patent number: 7767512
    Abstract: In a method of manufacturing a semiconductor device, a gate insulation layer is formed on a substrate including a first channel of a first conductive type and a second channel of a second conductive type different from the first conductive type. A first conductive layer including a first metal is formed on the gate insulation layer, and a second conductive layer including a second metal different from the first metal is formed on the first conductive layer formed over the second channel. The second conductive layer is partially removed by a wet etching process to form a second conductive layer pattern over the second channel.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: August 3, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung-Suk Jung, Jong-Ho Lee, Sung-Kee Han, Yun-Ki Choi, Ha Jin Lim
  • Publication number: 20090291568
    Abstract: Semiconductor devices and methods of forming the semiconductor device are provided, the semiconductor devices including a first dielectric layer on a substrate, and a second dielectric layer on the first dielectric layer. The first dielectric layer has a carbon concentration lower than the second dielectric layer.
    Type: Application
    Filed: April 3, 2009
    Publication date: November 26, 2009
    Inventors: Ha-Jin Lim, Hyung-Suk Jung, Yun-Ki Choi
  • Publication number: 20080261360
    Abstract: In a method of manufacturing a semiconductor device, a gate insulation layer is formed on a substrate including a first channel of a first conductive type and a second channel of a second conductive type different from the first conductive type. A first conductive layer including a first metal is formed on the gate insulation layer, and a second conductive layer including a second metal different from the first metal is formed on the first conductive layer formed over the second channel. The second conductive layer is partially removed by a wet etching process to form a second conductive layer pattern over the second channel.
    Type: Application
    Filed: January 24, 2008
    Publication date: October 23, 2008
    Inventors: Hyung-Suk Jung, Jong-Ho Lee, Sung-Kee Han, Yun-Ki Choi, Ha Jin Lim
  • Publication number: 20030099910
    Abstract: The present invention relates to a photochromic spirobenzopyran compound of the formula (1) and its derivatives, a spirobenzopyran group having unsaturated terminal groups, a polymer prepared therefrom, a method for the production thereof, a composition comprising said spirobenzopyran or said spirobenzopyran group-containing polymer and a photochromic switch film using the same: 1
    Type: Application
    Filed: August 24, 1999
    Publication date: May 29, 2003
    Inventors: EUN-KYOUNG KIM, YUN-KI CHOI, SAM-ROK KEUM
  • Patent number: 6479604
    Abstract: A diarylethene compound of the following formula (1) wherein R1 is a hydrogen or a substituted or unsubstituted C1-22 alkyl group, a fluoro group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted phenylalkyl group, R2 is a C1-22 alkylene group which may be unsubstituted or substituted with fluorine, R3 is a chemical bond, O, S, NR1, N(R2R1), or a C1-3 alkylene group which may be unsubstituted or substituted with one or more oxygen atoms or fluorine atoms, X and Y independently of one another O, S, nitrogen, NR1, or N(R2R1), and Z is a carbonyl group or a methylene group which may be unsubstituted or substituted with fluorine.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: November 12, 2002
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Eun-Kyoung Kim, Yun-Ki Choi