Patents by Inventor Ki Yong Cheong

Ki Yong Cheong 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).

  • Microorganism of the genus producing L-tryptophan and a method for producing L-tryptophan using the same
    Patent number: 10378032
    Abstract: The present disclosure relates to a microorganism of the genus Escherichia producing more L-tryptophan by inactivating the activity of phosphatase. Additionally, the present disclosure relates to a method for producing L-tryptophan using the microorganism of the genus Escherichia.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: August 13, 2019
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Hye Min Park, Baek Seok Lee, Seok Myung Lee, Kyungrim Kim, Kwang Ho Lee, Ki Yong Cheong, Keun Cheol Lee, Hyeongpyo Hong
  • Microorganisms producing L-amino acids and process for producing L-amino acids using the same
    Patent number: 10202609
    Abstract: Disclosed are a recombinant microorganism having enhanced L-amino acid producibility, wherein the recombinant microorganism is transformed to have an inactivated phage receptor thereof, and a method of producing an L-amino acid using the recombinant microorganism. The use of the recombinant microorganism may enable the production of the L-amino acid in a highly efficient manner.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 12, 2019
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Ji Sun Lee, Chang Il Seo, Ki Yong Cheong, Eun Sung Koh, Do Hyun Kwon, Kwang Ho Lee
  • L-threonine and L-tryptophan producing bacteria strain and method of making same
    Patent number: 10041099
    Abstract: The present invention relates to a microorganism able to produce L-threonine or L-tryptophan, and to a method for producing L-threonine or L-tryptophan by using same. More specifically, the present invention relates to: recombinant Escherichia coli which is more efficient in producing L-threonine or L-tryptophan by increasing the ability to produce ATP which is used as the most plentiful energy source in cells when producing L-threonine or L-tryptophan; and a method for producing L-threonine or L-tryptophan by using same.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: August 7, 2018
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Ki Yong Cheong, Seok Myung Lee, Young Bin Hwang, Keun Cheol Lee, Kwang Ho Lee
  • A MICROORGANISM OF THE GENUS ESCHERICHIA PRODUCING L-TRYPTOPHAN AND A METHOD FOR PRODUCING L-TRYPTOPHAN USING THE SAME
    Publication number: 20180127792
    Abstract: The present disclosure relates to a microorganism of the genus Escherichia producing more L-tryptophan by inactivating the activity of phosphatase. Additionally, the present disclosure relates to a method for producing L-tryptophan using the microorganism of the genus Escherichia.
    Type: Application
    Filed: May 10, 2016
    Publication date: May 10, 2018
    Inventors: Hye Min PARK, Baek Seok LEE, Seok Myung LEE, Kyungrim KIM, Kwang Ho LEE, Ki Yong CHEONG, Keun Cheol LEE, Hyeongpyo HONG
  • L-threonine and L-tryptophan producing bacteria strain and method of making same
    Publication number: 20170198317
    Abstract: The present invention relates to a microorganism able to produce L-threonine or L-tryptophan, and to a method for producing L-threonine or L-tryptophan by using same. More specifically, the present invention relates to: recombinant Escherichia coli which is more efficient in producing L-threonine or L-tryptophan by increasing the ability to produce ATP which is used as the most plentiful energy source in cells when producing L-threonine or L-tryptophan; and a method for producing L-threonine or L-tryptophan by using same.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 13, 2017
    Inventors: Ki Yong Cheong, Seok Myung Lee, Young Bin Hwang, Keun Cheol Lee, Kwang Ho Lee
  • MICROORGANISM OF THE GENUS ESCHERICHIA PRODUCING L-TRYPTOPHAN AND METHOD FOR PRODUCING L-TRYPTOPHAN USING THE SAME
    Publication number: 20170137854
    Abstract: The present application relates to a microorganism of the genus Escherichia producing L-tryptophan and, more specifically, to a microorganism of the genus Escherichia with improved activity of producing L-tryptophan by weakening or inactivating the activity of endogenous 6-phosphogluconate dehydratase and 2-keto-3-deoxy-6-phosphogluconate aldolase. Additionally, the present application relates to a method for producing L-tryptophan using the microorganism of the genus Escherichia.
    Type: Application
    Filed: June 23, 2015
    Publication date: May 18, 2017
    Inventors: Ki Yong CHEONG, Kyung Rim KIM, Seok Myung LEE, Kwang Ho LEE, Keun Cheol LEE, Hyeong Pyo HONG
  • MICROORGANISMS PRODUCING L-AMINO ACIDS AND PROCESS FOR PRODUCING L-AMINO ACIDS USING THE SAME
    Publication number: 20170044553
    Abstract: Disclosed are a recombinant microorganism having enhanced L-amino acid producibility, wherein the recombinant microorganism is transformed to have an inactivated phage receptor thereof, and a method of producing an L-amino acid using the recombinant microorganism. The use of the recombinant microorganism may enable the production of the L-amino acid in a highly efficient manner.
    Type: Application
    Filed: March 17, 2015
    Publication date: February 16, 2017
    Inventors: Ji Sun LEE, Chang Il SEO, Ki Yong CHEONG, Eun Sung KOH, Do Hyun KWON, Kwang Ho LEE
  • Microorganism able to Produce L-Amino Acid, and Method for Producing L-Amino Acid by Using the Same
    Publication number: 20150050703
    Abstract: The present invention relates to a microorganism able to produce L-threonine or L-tryptophan, and to a method for producing L-threonine or L-tryptophan by using same. More specifically, the present invention relates to: recombinant Escherichia coli which is more efficient in producing L-threonine or L-tryptophan by increasing the ability to produce ATP which is used as the most plentiful energy source in cells when producing L-threonine or L-tryptophan; and a method for producing L-threonine or L-tryptophan by using same.
    Type: Application
    Filed: January 7, 2013
    Publication date: February 19, 2015
    Inventors: Ki Yong Cheong, Seok Myung Lee, Young Bin Hwang, Keun Cheol Lee, Kwang Ho Lee