Patents by Inventor Dong Eun Chang

Dong Eun Chang 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).

  • Nucleic acid molecules comprising a variant inc coding strand
    Patent number: 11549116
    Abstract: A nucleic acid molecule comprising a variant inc coding strand is disclosed as a regulator of plasmid copy number. Also disclosed is a replicon comprising the nucleic acid molecule, a promoter, and an origin of replication. Also disclosed is a vector comprising the replicon. Also disclosed is a recombinant microorganism comprising the vector.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: January 10, 2023
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Ji Sun Lee, Dong Eun Chang, Sang Jun Kim, So Young Kim
  • Nucleic acid molecules comprising a variant RpoC coding sequence
    Patent number: 11407983
    Abstract: A nucleic acid molecule comprising a variant rpoC coding sequence is disclosed. The variant rpoC coding sequence encodes a variant RpoC which regulates copy number of a plasmid. Also disclosed are a recombinant microorganism comprising the nucleic acid molecule, a method for regulating copy number of a subject vector in the recombinant microorganism, and a method for making a target product by use of the recombinant microorganism.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 9, 2022
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Ji Sun Lee, Dong Eun Chang, So Young Kim
  • Nucleic Acid Molecules Comprising a Variant inc Coding Strand
    Publication number: 20200048642
    Abstract: A nucleic acid molecule comprising a variant inc coding strand is disclosed as a regulator of plasmid copy number. Also disclosed is a replicon comprising the nucleic acid molecule, a promoter, and an origin of replication. Also disclosed is a vector comprising the replicon. Also disclosed is a recombinant microorganism comprising the vector.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Inventors: Ji Sun LEE, Dong Eun CHANG, Sang Jun KIM, So Young KIM
  • Nucleic Acid Molecules Comprising a Variant RpoC Coding Sequence
    Publication number: 20200048619
    Abstract: A nucleic acid molecule comprising a variant rpoC coding sequence is disclosed. The variant rpoC coding sequence encodes a variant RpoC which regulates copy number of a plasmid. Also disclosed are a recombinant microorganism comprising the nucleic acid molecule, a method for regulating copy number of a subject vector in the recombinant microorganism, and a method for making a target product by use of the recombinant microorganism.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Inventors: Ji Sun LEE, Dong Eun CHANG, So Young KIM
  • Pta LDHA double mutant Escherichia coli SS373 and the method of producing succinic acid therefrom
    Patent number: 6448061
    Abstract: This invention relates to a mutant Escherichia coli SS373 and the production of succinic acid by using the above strain. In detail, a novel E. coli SS373 (W3110 pta::Tn10 ldhA::Km) with the deficiency in the acetate and lactate forming pathways was constructed by genetic engineering technique. An aerobically grown SS373 was then cultured by means of the anaerobic condition shift during the succinate producing stage, which resulted in the efficient production of succinic acid with a higher yield.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: September 10, 2002
    Assignee: Korea Institute of Science and Technology
    Inventors: Jao Go Pan, Soo An Shin, Chan Kyu Park, Pil Kim, Dong Eun Chang, Jae Eun Kim