Patents by Inventor Sunghaeng LEE

Sunghaeng LEE 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).

  • Porous film, separator including the same, electrochemical device including separator, and method of preparing porous film
    Patent number: 11211671
    Abstract: Provided herein are a porous film, a separator including the same, an electrochemical device including the separator, and a method of preparing the porous film. The porous film includes first cellulose nanofibers which is impregnated with a carbonate-based solvent-containing electrolyte solution and has a reaction heat of 150 J/g or less at a temperature ranging from about 30° C. to about 300° C., as measured by differential scanning calorimetry (DSC).
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: December 28, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyunchul Lee, Junhwan Ku, Hyeokjo Gwon, Nagjong Kim, Chilhee Chung, Sangmin Ji, Jinkyu Kang, Changduk Kang, Ryounghee Kim, Minsang Kim, Euncheol Do, Kitae Park, Sunghaeng Lee
  • POROUS FILM, SEPARATOR COMPRISING THE POROUS FILM, AND ELECTROCHEMICAL DEVICE COMPRISING THE POROUS FILM
    Publication number: 20200052272
    Abstract: A porous film comprising a Lewis base and nanofibers comprising cellulose or a derivative thereof, a separator comprising the porous film, and an electrochemical device comprising the separator or porous film are provided. The electrochemical device comprising the separator comprising the porous film may have improved thermal stability, and thus deterioration of the electrochemical device may be inhibited.
    Type: Application
    Filed: June 20, 2019
    Publication date: February 13, 2020
    Inventors: Kitae Park, Jinkyu Kang, Hyun Chul Lee, Hyeokjo Gwon, Nagjong Kim, Sunghaeng Lee
  • POROUS FILM, SEPARATOR INCLUDING POROUS FILM, ELECTROCHEMICAL DEVICE INCLUDING POROUS FILM, AND METHOD OF PREPARING POROUS FILM
    Publication number: 20190237731
    Abstract: A porous film, a separator including the porous film, an electrochemical device including the porous film, and a method of preparing the porous film are provided, wherein the porous film includes: small-diameter fibers having an average diameter of about 50 nm or less; and large-diameter fibers having an average diameter of about 100 nm or greater, wherein an amount of the large-diameter fibers is about 5 wt % to about 60 wt % based on a total weight of the small-diameter fibers and the large-diameter fibers.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 1, 2019
    Inventors: Kitae Park, Jinkyu Kang, Nagjong Kim, Sunghaeng Lee
  • POROUS FILM, SEPARATOR INCLUDING THE SAME, ELECTROCHEMICAL DEVICE INCLUDING SEPARATOR, AND METHOD OF PREPARING POROUS FILM
    Publication number: 20190221809
    Abstract: Provided herein are a porous film, a separator including the same, an electrochemical device including the separator, and a method of preparing the porous film. The porous film includes first cellulose nanofibers which is impregnated with a carbonate-based solvent-containing electrolyte solution and has a reaction heat of 150 J/g or less at a temperature ranging from about 30° C. to about 300° C., as measured by differential scanning calorimetry (DSC).
    Type: Application
    Filed: November 20, 2018
    Publication date: July 18, 2019
    Inventors: Hyunchul Lee, Junhwan Ku, Hyeokjo Gwon, Nagjong Kim, Chilhee Chung, Sangmin Ji, Jinkyu Kang, Changduk Kang, Ryounghee Kim, Minsang Kim, Euncheol Do, Kitae Park, Sunghaeng Lee
  • MICROORGANISM HAVING ENHANCED CELLULOSE PRODUCTIVITY, METHOD OF PRODUCING CELLULOSE BY USING THE SAME, AND METHOD OF PRODUCING THE MICROORGANISM
    Publication number: 20190144904
    Abstract: Provided are a microorganism having enhanced cellulose productivity, a method of producing cellulose by using the microorganism, and a method of producing the microorganism.
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Inventors: Wooyong Shim, Hongsoon Rhee, Sunghaeng Lee, Jinhwan Park
  • POROUS FILM, SEPARATOR INCLUDING POROUS FILM, ELECTROCHEMICAL DEVICE INCLUDING POROUS FILM, AND METHOD OF PREPARING POROUS FILM
    Publication number: 20190109309
    Abstract: Provided are a porous film including cellulose nanofibers and having a transmittance of 70 percent (%) or higher and a haze of 50% or lower, as measured according to ASTM D1003 using a CIE1931 color space (Illuminant C and a 2° observer) at a thickness of 16 micrometers (?m); a separator including the porous film; an electrochemical device including the porous film; and a method of preparing the porous film.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 11, 2019
    Inventors: Nagjong Kim, Kitae Park, Jinkyu Kang, Jinhwan Park, Sunghaeng Lee
  • RECOMBINANT MICROORGANISM OF GENUS KOMAGATAEIBACTER, METHOD OF PRODUCING CELLULOSE BY USING THE SAME, AND METHOD OF PRODUCING THE MICROORGANISM
    Publication number: 20190040476
    Abstract: Provided is a microorganism of the genus Komagataeibacter having enhanced cellulose productivity and yield, a method of producing cellulose by using the same, and a method of producing the microorganism.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 7, 2019
    Inventors: Soonchun Chung, Sunghaeng Lee, Jinhwan Park
  • SEPARATOR, ELECTROCHEMICAL CELL INCLUDING SEPARATOR, METHOD OF PREPARING SEPARATOR, AND NON-WOVEN FABRIC
    Publication number: 20180114967
    Abstract: Provided are a separator including carboxyl-group-containing cellulose nanofibers and a porous film having a tensile strength of about 60 MPa or greater, an electrochemical cell including the separator, a method of preparing the separator, and non-woven fabric.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 26, 2018
    Inventors: Nagjong Kim, Sunghaeng Lee, Jinkyu Kang, Jinhwan Park, Kitae Park, Soojin Park
  • METHOD OF PRODUCING CELLULOSE NONWOVEN FABRIC, CELLULOSE NONWOVEN FABRIC PRODUCED THEREBY, AND SECONDARY ION BATTERY INCLUDING THE SAME
    Publication number: 20170331093
    Abstract: A method of producing a cellulose nonwoven fabric, a cellulose nonwoven fabric produced thereby, and a secondary ion battery including the same, wherein the method includes passing a cellulose suspension with microbial cellulose and a water-soluble cellulose disintegrating agent in a medium through an orifice of a high-pressure homogenizer to obtain a cellulose dispersion and removing the medium from the obtained cellulose dispersion to form the nonwoven fabric.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 16, 2017
    Inventors: Minsang Kim, Jongwon Byun, Soonchun Chung, Sunghaeng Lee, Jinkyu Kang, Jinhwan Park
  • Yeast having improved productivity and method of producing product
    Patent number: 9701988
    Abstract: A recombinant yeast cell capable of consuming glucose at an increased rate, and a method of efficiently producing glycolysis-derived products using the recombinant yeast cell.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 11, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATION
    Inventors: Jiyoon Song, Jisook Hahn, Changduk Kang, Daehee Kim, Seunghyun Lee, Sunghaeng Lee, Kwangmyung Cho
  • Genetically engineered yeast cell producing lactate including acetaldehyde dehydrogenase, method of producing yeast cell, and method of producing lactate using the same
    Patent number: 9617569
    Abstract: Provided is a genetically engineered yeast cell with lactate production capacity, including an enzyme that catalyzes conversion of acetaldehyde to acetyl-CoA and an enzyme that catalyzes conversion of pyruvate to lactate, which activities are increased compared to a parent cell of the yeast cell, as well as a method of producing the genetically engineered yeast cell and method of producing lactate using the genetically engineered yeast cell.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: April 11, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jiyoon Song, Changduk Kang, Joonsong Park, Sungsoo Kim, Youngkyoung Park, Sunghaeng Lee, Soyoung Lee, Juyoung Lee, Kwangmyung Cho, Wooyong Lee
  • Genetically engineered and stress resistant yeast cell with enhanced MSN2 activity and method of producing lactate using the same
    Patent number: 9598709
    Abstract: Provided is a yeast cell having a stress tolerance, wherein the yeast cell has enhanced MSN2 activity, a method of producing the yeast cell, and a method of producing lactate by using the same.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: March 21, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungsoo Kim, Sunghaeng Lee, Dongsik Yang, Huisub Lim, Kwangmyung Cho
  • GENETICALLY ENGINEERED AND ACID-RESISTANT YEAST CELL WITH ENHANCED ERG5 ACTIVITY AND METHOD OF PRODUCING LACTATE BY USING THE YEAST CELL
    Publication number: 20160024536
    Abstract: Provided is a recombinant acid resistance yeast cell that is genetically engineered to increase ERG5 activity and a method of producing lactate by using the yeast cell.
    Type: Application
    Filed: March 13, 2015
    Publication date: January 28, 2016
    Inventors: Wooyong Lee, Soyoung Lee, Huisub Lim, Jiyoon Song, Kwangmyung Cho, Sunghaeng LEE
  • GENETICALLY ENGINEERED AND STRESS RESISTANT YEAST CELL WITH ENHANCED MSN2 ACTIVITY AND METHOD OF PRODUCING LACTATE USING THE SAME
    Publication number: 20160024537
    Abstract: Provided is a yeast cell having a stress tolerance, wherein the yeast cell has enhanced MSN2 activity, a method of producing the yeast cell, and a method of producing lactate by using the same.
    Type: Application
    Filed: July 28, 2015
    Publication date: January 28, 2016
    Inventors: Sungsoo Kim, Sunghaeng Lee, Dongsik Yang, Huisub Lim, Kwangmyung Cho
  • YEAST HAVING IMPROVED PRODUCTIVITY AND METHOD OF PRODUCING PRODUCT
    Publication number: 20160002678
    Abstract: A recombinant yeast cell capable of consuming glucose at an increased rate, and a method of efficiently producing glycolysis-derived products using the recombinant yeast cell.
    Type: Application
    Filed: February 27, 2015
    Publication date: January 7, 2016
    Inventors: Jiyoon Song, Jisook Hahn, Changduk Kang, Daehee Kim, Seunghyun Lee, Sunghaeng Lee, Kwangmyung Cho
  • GENETICALLY ENGINEERED YEAST CELL PRODUCING LACTATE INCLUDING ACETALDEHYDE DEHYDROGENASE, METHOD OF PRODUCING YEAST CELL, AND METHOD OF PRODUCING LACTATE USING THE SAME
    Publication number: 20150140626
    Abstract: Provided is a genetically engineered yeast cell with lactate production capacity, including an enzyme that catalyzes conversion of acetaldehyde to acetyl-CoA and an enzyme that catalyzes conversion of pyruvate to lactate, which activities are increased compared to a parent cell of the yeast cell, as well as a method of producing the genetically engineered yeast cell and method of producing lactate using the genetically engineered yeast cell.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 21, 2015
    Inventors: Jiyoon SONG, Changduk KANG, Joonsong PARK, Sungsoo KIM, Youngkyoung PARK, Sunghaeng LEE, Soyoung LEE, Juyoung LEE, Kwangmyung CHO, Wooyong LEE