Patents by Inventor Chang Il Seo

Chang Il Seo 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).

  • Apparatus for encoding and decoding image using adaptive DCT coefficient scanning based on pixel similarity and method therefor
    Patent number: 11949881
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 2, 2024
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
  • A RECOMBINANT MICROORGANISM FOR PRODUCING L-GLUTAMIC ACID AND A METHOD FOR PRODUCING L-GLUTAMIC ACID USING THE SAME
    Publication number: 20230323413
    Abstract: The present disclosure relates to a L-glutamic acid-producing recombinant microorganism comprising a SbtA protein or a polynucleotide encoding the SbtA protein, and to a method for producing L-glutamic acid by using the same.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 12, 2023
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Nara KWON, Gyuhyeon SONG, Jin Nam LEE, Hyun-Ju BONG, Chang Il SEO, Ah Reum LEE
  • NOVEL L-TYROSINE-EXPORTING PROTEIN VARIANT AND METHOD FOR PRODUCING L-TYROSINE USING THE SAME
    Publication number: 20230272441
    Abstract: A protein variant having an L-tyrosine exporting activity, a microorganism expressing the same, and use thereof.
    Type: Application
    Filed: May 27, 2021
    Publication date: August 31, 2023
    Inventors: Hyun Ah KIM, Heejung KIM, Moo Young JUNG, Chang Il SEO, Gyuhyeon SONG
  • Camp receptor protein variant and method of producing L-amino acid using the same
    Patent number: 11697673
    Abstract: The present disclosure relates to a variant of cAMP receptor protein of Escherichia coli with alanine at position 35, a microorganism including the same, and a method of producing an L-amino acid using the same.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: July 11, 2023
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Seok Myung Lee, Ki Yong Cheong, Chang Il Seo, Ji Sun Lee
  • METHOD FOR PRODUCING L-TRYPTOPHAN THROUGH ENHANCEMENT OF PREPHENATE DEHYDRATASE ACTIVITY
    Publication number: 20230134555
    Abstract: The present disclosure relates to a method for producing L-tryptophan through the enhancement of prephenate dehydratase (PheA) activity.
    Type: Application
    Filed: March 5, 2021
    Publication date: May 4, 2023
    Inventors: Chang Il SEO, Hyun Ah KIM, Sung Kwang SON, Ki Yong CHEONG, Moo Young JUNG, Tae Yeon KIM
  • Promoter and use thereof
    Patent number: 11603534
    Abstract: Provided are promoters and a method of producing L-amino acid using the same.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: March 14, 2023
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Jee Yeon Bae, Chang Il Seo, Inhwa Yoo, Hye Ryun Yoo, So Young Kim, Yong Uk Shin
  • L-THREONINE EXPORT PROTEIN VARIANT AND METHOD FOR PRODUCTION OF L-THREONINE USING SAME
    Publication number: 20230012923
    Abstract: The present disclosure relates to an L-threonine export protein variant, a microorganism including same, and a method for production of L-threonine using same.
    Type: Application
    Filed: September 9, 2020
    Publication date: January 19, 2023
    Inventors: Chang Il SEO, Hyo Jin KIM, Ji Sun LEE, Sol CHOI
  • Nucleic acid encoding a modified homoserine dehydrogenase
    Patent number: 11555213
    Abstract: The present disclosure relates to modified homoserine dehydrogenase and a method for producing a homoserine-derived L-amino acid using the same.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: January 17, 2023
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Hyo Jin Kim, Lan Huh, Sang Jo Lim, Hyun Ah Kim, Hyoung Joon Kim, Chang il Seo, Seung Bin Lee, Ji Sun Lee
  • L-tryptophan-exporting protein variant and method for producing L-tryptophan using the same
    Patent number: 11524981
    Abstract: The present disclosure relates to a protein variant having a tryptophan-exporting activity, an L-tryptophan-producing microorganism expressing the protein variant, and a method for producing L-tryptophan using the microorganism.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: December 13, 2022
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Moo Young Jung, Hyun Ah Kim, Chang Il Seo, Imsang Lee, Ji-won Kim, Tae Yeon Kim, Sung Kwang Son, Ki Yong Cheong
  • cAMP receptor protein variant, coding sequence and method of producing L-amino acid using the same
    Patent number: 11473113
    Abstract: Provided are a cAMP receptor protein variant and coding sequence, a microorganism including the same, and a method of producing a L-amino acid using the same.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: October 18, 2022
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Seok Myung Lee, Ki Yong Cheong, Chang Il Seo, Ji Sun Lee
  • MICROORGANISM WITH ENHANCED L-HISTIDINE PRODUCTION CAPACITY AND METHOD FOR PRODUCING HISTIDINE BY USING SAME
    Publication number: 20220205003
    Abstract: Provided are a microorganism having an enhanced L-histidine producing ability and a method of producing histidine using the same.
    Type: Application
    Filed: March 10, 2020
    Publication date: June 30, 2022
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Lan Huh, Nara Kwon, Chang Il Seo
  • L-TYROSINE-PRODUCING MICROORGANISM AND METHOD FOR PRODUCING L-TYROSINE USING THE SAME
    Publication number: 20220195470
    Abstract: The present disclosure relates to an L-tyrosine-producing microorganism, comprising a trp operon regulatory region and a gene encoding prephenate dehydratase operably linked thereto, and a method for producing L-tyrosine using the microorganism.
    Type: Application
    Filed: June 17, 2020
    Publication date: June 23, 2022
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Gyuhyeon Song, Chang Il Seo, Nara Kwon
  • Modified homoserine dehydrogenase and method for producing homoserine or L-amino acid derived from homoserine using the same
    Patent number: 11236374
    Abstract: The present disclosure relates to modified homoserine dehydrogenase and a method for producing a homoserine-derived L-amino acid using the same.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: February 1, 2022
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Hyo Jin Kim, Lan Huh, Sang Jo Lim, Hyun Ah Kim, Hyoung Joon Kim, Chang il Seo, Seung Bin Lee, Ji Sun Lee
  • NOVEL L-TRYPTOPHAN-EXPORTING PROTEIN VARIANT AND METHOD FOR PRODUCING L-TRYPTOPHAN USING THE SAME
    Publication number: 20220009973
    Abstract: The present disclosure relates to a protein variant having a tryptophan-exporting activity, an L-tryptophan-producing microorganism expressing the protein variant, and a method for producing L-tryptophan using the microorganism.
    Type: Application
    Filed: March 20, 2020
    Publication date: January 13, 2022
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Moo Young Jung, Hyun Ah Kim, Chang Il Seo, Imsang Lee, Ji-won Kim, Tae Yeon Kim, Sung Kwang Son, Ki Yong Cheong
  • MODIFIED HOMOSERINE DEHYDROGENASE AND METHOD FOR PRODUCING HOMOSERINE OR L-AMINO ACID DERIVED FROM HOMOSERINE USING THE SAME
    Publication number: 20210403962
    Abstract: The present disclosure relates to modified homoserine dehydrogenase and a method for producing a homoserine-derived L-amino acid using the same.
    Type: Application
    Filed: September 10, 2021
    Publication date: December 30, 2021
    Inventors: Hyo Jin KIM, Lan HUH, Sang Jo LIM, Hyun Ah KIM, Hyoung Joon KIM, Chang il SEO, Seung Bin LEE, Ji Sun LEE
  • L-tryptophan exporter and method of producing L-tryptophan using the same
    Patent number: 10995378
    Abstract: The present disclosure relates to a microorganism producing L-tryptophan in which the microorganism is modified such that a protein having an L-tryptophan-exporting activity comprising the amino acid sequence of SEQ ID NO: 1 is expressed, and a method for producing L-tryptophan using the microorganism.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 4, 2021
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Moo Young Jung, Chang Il Seo, Hyo Jin Kim, Tae Yeon Kim, Hyun Ah Kim, Sung Kwang Son, Hye Ryun Yoo, Jae Min Lee, Ki Yong Cheong
  • MODIFIED HOMOSERINE DEHYDROGENASE AND METHOD FOR PRODUCING HOMOSERINE OR L-AMINO ACID DERIVED FROM HOMOSERINE USING THE SAME
    Publication number: 20210002682
    Abstract: The present disclosure relates to modified homoserine dehydrogenase and a method for producing a homoserine-derived L-amino acid using the same.
    Type: Application
    Filed: May 21, 2019
    Publication date: January 7, 2021
    Inventors: Hyo Jin KIM, Lan HUH, Sang Jo LIM, Hyun Ah KIM, Hyoung Joon KIM, Chang il SEO, Seung Bin LEE, Ji Sun LEE
  • A RECOMBINANT MICROORGANISM PRODUCING L-THREONINE AND A METHOD FOR PRODUCING L-THREONINE USING THE SAME
    Publication number: 20200248218
    Abstract: The present disclosure relates to a recombinant microorganism producing threonine, and a method for producing L-threonine using the same.
    Type: Application
    Filed: October 21, 2016
    Publication date: August 6, 2020
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Chang Il Seo, Hye Min Park, Kwang Ho Lee, Sang Min Park, Kyung Rim Kim, Ki Yong Cheong
  • Aspartokinase variant and method for producing L-amino acid using the same
    Patent number: 10662450
    Abstract: An aspartokinase variant, a microorganism comprising the variant, and a method for producing an aspartate-derived L-amino acid or a homoserine derivative thereof using the microorganism.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: May 26, 2020
    Assignee: CJ Cheiljedang Corporation
    Inventors: Hyung Joon Kim, Hyo Jin Kim, Hyun Won Bae, Hyun Ah Kim, Chang Il Seo, Ji Sun Lee, Jin Sook Chang
  • NOVEL ASPARTOKINASE VARIANT AND METHOD FOR PRODUCING L-AMINO ACID USING THE SAME
    Publication number: 20200131545
    Abstract: An aspartokinase variant, a microorganism comprising the variant, and a method for producing an aspartate-derived L-amino acid or a homoserine derivative thereof using the microorganism.
    Type: Application
    Filed: June 29, 2018
    Publication date: April 30, 2020
    Inventors: Hyung Joon KIM, Hyo Jin KIM, Hyun Won BAE, Hyun Ah KIM, Chang Il SEO, Ji Sun LEE, Jin Sook CHANG