Patents by Inventor Kyung-oh Choi

Kyung-oh 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).

  • GLP-1 receptor agonist and use thereof
    Patent number: 11932618
    Abstract: Disclosed are novel compounds of Chemical Formula 1, optical isomers of the compounds, and pharmaceutically acceptable salts of the compounds or the optical isomers. The compounds, isomers, and salts exhibit excellent activity as GLP-1 receptor agonists. In particular, they, as GLP-1 receptor agonists, exhibit excellent glucose tolerance, thus having a great potential to be used as therapeutic agents for metabolic diseases. Moreover, they exhibit excellent pharmacological safety for cardiovascular systems.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: March 19, 2024
    Assignee: ILDONG PHARMACEUTICAL CO., LTD.
    Inventors: Hong Chul Yoon, Kyung Mi An, Myong Jae Lee, Jin Hee Lee, Jeong-geun Kim, A-rang Im, Woo Jin Jeon, Jin Ah Jeong, Jaeho Heo, Changhee Hong, Kyeojin Kim, Jung-Eun Park, Te-ik Sohn, Changmok Oh, Da Hae Hong, Sung Wook Kwon, Jung Ho Kim, Jae Eui Shin, Yeongran Yoo, Min Whan Chang, Eun Hye Jang, In-gyu Je, Ji Hye Choi, Gunhee Kim, Yearin Jun
  • Microorganism Producing L-Methionine Precursor and Method of Producing L-Methionine and Organic Acid from the L-Methionine Precursor
    Publication number: 20150211034
    Abstract: The present invention relates to a method for producing L-methionine, comprising: i) culturing an L-methionine precursor-producing microorganism strain in a fermentation solution, so that the L-methionine precursor accumulates in the solution; and ii) mixing a converting enzyme and methylmercaptan or its salts with at least a portion of the solution to convert the accumulated L-methionine precursor into L-methionine, as well as to microorganism strains used in each step.
    Type: Application
    Filed: April 7, 2015
    Publication date: July 30, 2015
    Inventors: So-young Kim, Kwang-myung Cho, Yong-uk Shin, Hye-won Um, Kyung-oh Choi, Jin-sook Chang, Young-wook Cho, Young-hoon Park
  • Microorganism producing L-methionine precursor and method of producing L-methionine and organic acid from the L-methionine precursor
    Patent number: 9029105
    Abstract: The present invention relates to a method for producing L-methionine, comprising: i) culturing an L-methionine precursor-producing microorganism strain in a fermentation solution, so that the L-methionine precursor accumulates in the solution; and ii) mixing a converting enzyme and methylmercaptan or its salts with at least a portion of the solution to convert the accumulated L-methionine precursor into L-methionine, as well as to microorganism strains used in each step.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 12, 2015
    Assignee: CJ Cheiljedang Corporation
    Inventors: So-young Kim, Kwang-myung Choi, Yong-uk Shin, Hye-won Um, Kyung-oh Choi, Jin-sook Chang, Young-wook Cho, Young-hoon Park
  • Ammonia-specific 5?-XMP aminase mutant
    Patent number: 8669078
    Abstract: Disclosed herein are ammonia-specific 5?-XMP aminase mutants and a method for preparing the same. A mutation is introduced into the active site of glutamine-dependent catalysis in 5?-XMP aminase. The resulting 5?-XMP aminase mutant is devoid of the glutamine-dependent activity and specifically reacts with external ammonia in converting 5?-XMP into 5?-GMP. Thus, the ammonia-specific 5?-XMP aminase mutant is stabler within cells compared to the wild type, and can be useful in the industrial conversion of 5?-XMP into 5?-GMP.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: March 11, 2014
    Assignee: CJ Cheiljedang Corporation
    Inventors: Jae-Gu Pan, Heung-Chae Jung, Eui-Joong Kim, Han-Seung Lee, Young Hoon Park, Hyoung Suk Kim, Jong-Kwon Han, Jin Nam Lee, Ki-Hoon Oh, Jeong Hwan Kim, Yoon-Suk Oh, Jae Ick Sim, Kuk-Ki Hong, Kyung Oh Choi, Hyun Soo Kim, Min-Ji Baek, Tae Sun Kang
  • Microorganism producing L-methionine precursor and method of producing L-methionine and organic acid from the L-methionine precursor
    Publication number: 20130231503
    Abstract: The present invention relates to a method for producing L-methionine, comprising: i) culturing an L-methionine precursor-producing microorganism strain in a fermentation solution, so that the L-methionine precursor accumulates in the solution; and ii) mixing a converting enzyme and methylmercaptan or its salts with at least a portion of the solution to convert the accumulated L-methionine precursor into L-methionine, as well as to microorganism strains used in each step.
    Type: Application
    Filed: January 29, 2013
    Publication date: September 5, 2013
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: So-young Kim, Kwang-myung Choi, Yong-uk Shin, Hye-won Um, Kyung-oh Choi, Jin-sook Chang, Young-wook Cho, Young-hoon Park
  • Microorganism producing L-methionine precursor and method of producing L-methionine and organic acid from the L-methionine precursor
    Patent number: 8426171
    Abstract: The present invention relates to a method for producing L-methionine and organic acid comprising the following steps: Step 1) preparing a strain producing L-methionine precursor and producing L-methionine precursor by the fermentation of the strain; Step 2) producing L-methionine and organic acid by the enzyme reaction process with the L-methionine precursor as a substrate, and microorganism strains used in each step.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: April 23, 2013
    Assignee: CJ Cheiljedang Corporation
    Inventors: So-young Kim, Kwang-myung Cho, Yong-uk Shin, Hye-won Um, Kyung-oh Choi, Jin-sook Chang, Young-wook Cho, Young-hoon Park
  • Process for producing fermentation product from carbon sources containing glycerol using
    Patent number: 8426165
    Abstract: The present invention relates to a method for producing fermentation product from various carbon sources containing glycerol using Corynebacteria. More particularly, the present invention relates to a method for producing fermentation product from carbon sources containing glycerol or a part of glycerol with high yield and high productivity, by fermenting Corynebacteria introduced with the foreign gene glpDFK facilitating the use of glycerol and accumulating industrially useful amino acids in the culture medium.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: April 23, 2013
    Assignee: CJ Cheiljedang Corporation
    Inventors: Kwang-myung Cho, Kyung-oh Choi, Hyun-ae Bae
  • Microorganism Producing L-Methionine Precursor And Method Of Producing L-Methionine And Organic Acid From The L-Methionine Precursor
    Publication number: 20100184164
    Abstract: The present invention relates to a method for producing L-methionine and organic acid comprising the following steps: Step 1) preparing a strain producing L-methionine precursor and producing L-methionine precursor by the fermentation of the strain; Step 2) producing L-methionine and organic acid by the enzyme reaction process with the L-methionine precursor as a substrate, and microorganism strains used in each step.
    Type: Application
    Filed: July 30, 2007
    Publication date: July 22, 2010
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: So-young Kim, Kwang-myung Cho, Yong-uk Shin, Hye-won Um, Kyung-oh Choi, Jin-sook Chang, Young-wook Cho, Young-hoon Park
  • Escherichia strain capable of converting XMP to GMP and maintaining the inactivated state of gene(s) associated with GMP degradation and methods of using the same
    Patent number: 7741101
    Abstract: Provided are mutant strains derived from Escherichia sp. GPU1114 (Accession No. KCCM-10536), having cumulative inactivation of deoD, aphA, appA, and hprt genes, and methods of using the same.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: June 22, 2010
    Assignee: CJ Cheiljedang Corporation
    Inventors: Young-hoon Park, Hyoung-suk Kim, Jin-nam Lee, Ko-hoon Oh, Jeong-hwan Kim, Yoon-suk Oh, Jae-ick Sim, Kyung-oh Choi
  • Process for Producing Fermentation Product from Carbon Sources Containing Glycerol using Corynebacteria
    Publication number: 20100129884
    Abstract: The present invention relates to a method for producing fermentation product from various carbon sources containing glycerol using Corynebacteria. More particularly, the present invention relates to a method for producing fermentation product from carbon sources containing glycerol or a part of glycerol with high yield and high productivity, by fermenting Corynebacteria introduced with the foreign gene glpDFK facilitating the use of glycerol and accumulating industrially useful amino acids in the culture medium.
    Type: Application
    Filed: January 22, 2008
    Publication date: May 27, 2010
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Kwang-myung Cho, Kyung-oh Choi, Hyun-ae Bae
  • Ammonia-Specific 5'-Xmp Aminase Mutant
    Publication number: 20080318278
    Abstract: Disclosed herein are ammonia-specific 5?-XMP aminase mutants and a method for preparing the same. A mutation is introduced into the active site of glutamine-dependent catalysis in 5?-XMP aminase. The resulting 5?-XMP aminase mutant is devoid of the glutamine-dependent activity and specifically reacts with external ammonia in converting 5?-XMP into 5?-GMP. Thus, the ammonia-specific 5?-XMP aminase mutant is stabler within cells compared to the wild type, and can be useful in the industrial conversion of 5?-XMP into 5?-GMP.
    Type: Application
    Filed: December 14, 2006
    Publication date: December 25, 2008
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Jae-Gu Pan, Heung-Chae Jung, Eui-Joong Kim, Han-Seung Lee, Young Hoon Park, Hyoung Suk Kim, Jong-Kwon Han, Jin Nam Lee, Ki-Hoon Oh, Jeong Hwan Kim, Yoon-Suk Oh, Jae Ick Sim, Kuk-Ki Hong, Kyung Oh Choi, Hyun Soo Kim, Min-Ji Baek, Tae Sun Kang
  • Escherichia Strain Capable of Converting Xmp to Gmp and Maintaining the Inactivated State of Gene(s) Associated with Gmp Degradation and Methods of Using the Same
    Publication number: 20080299620
    Abstract: Provided are mutant strains derived from Escherichia sp. GPU1114 (Accession No. KCCM-10536), having cumulative inactivation of deoD, aphA, appA, and hprt genes, and methods of using the same.
    Type: Application
    Filed: January 20, 2006
    Publication date: December 4, 2008
    Applicant: CJ CORP.
    Inventors: Young-hoon Park, Hyoung-suk Kim, Jin-nam Lee, Ki-hoon Oh, Jeong-hwan Kim, Yoon-suk Oh, Jae-ick Sim, Kyung-oh Choi