Patents by Inventor Jin-Nam Lee

Jin-Nam 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).

  • 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
  • Publication number: 20230313243
    Abstract: The present disclosure relates to a novel O-phosphoserine export protein, and a method for producing O-phosphoserine, cysteine, and cysteine derivatives using the same.
    Type: Application
    Filed: September 6, 2021
    Publication date: October 5, 2023
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Hye Min Park, So-Yeon Kim, Hee-jin Sim, Hyeryun Yoo, Jin Nam Lee
  • Publication number: 20230212623
    Abstract: An L-methionine-producing microorganism into which a metZ gene is introduced and a method of producing L-methionine using the same.
    Type: Application
    Filed: October 28, 2020
    Publication date: July 6, 2023
    Inventors: Sol CHOI, Jin Nam LEE, Hee Ju KIM, Jin Ah RHO, Han Hyoung LEE
  • Publication number: 20230127940
    Abstract: An O-phosphoserine (OPS) export protein variant, and a method for producing O-phosphoserine, cysteine, and cysteine derivatives using the same.
    Type: Application
    Filed: June 8, 2021
    Publication date: April 27, 2023
    Inventors: Hye Min PARK, So-Yeon KIM, Hee-jin SIM, Jin Nam LEE
  • Publication number: 20220315963
    Abstract: A method of producing sulfur-containing amino acids or derivatives of the sulfur-containing amino acids.
    Type: Application
    Filed: June 26, 2020
    Publication date: October 6, 2022
    Inventors: Sol CHOI, Hee Ju KIM, Jin Ah RHO, Jin Nam LEE, Han Hyoung LEE, Sun Young LEE, Sang Jun KIM, Jihyun SHIM
  • Publication number: 20220315964
    Abstract: A method of producing sulfur-containing amino acids or derivatives of the sulfur-containing amino acids.
    Type: Application
    Filed: June 26, 2020
    Publication date: October 6, 2022
    Inventors: Sol CHOI, Hee Ju KIM, Jin Ah RHO, Jin Nam LEE, Han Hyoung LEE, Sun Young LEE, Sang Jun KIM, Jihyun SHIM
  • Publication number: 20220228179
    Abstract: Provided are a microorganism producing an L-amino acid or a precursor thereof, and a method of producing an L-amino acid or a precursor thereof using the microorganism.
    Type: Application
    Filed: April 29, 2020
    Publication date: July 21, 2022
    Inventors: Hye Ryun YOO, So-Yeon KIM, Hye Min PARK, Sung Gun LEE, Jin Nam LEE, Hyun Ah KIM, Sol CHOI, Lan HUH
  • Patent number: 11098333
    Abstract: The present disclosure relates to an ATP phosphoribosyltransferase (HisG) protein and a method for producing histidine using the same.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 24, 2021
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Myung Keun Park, Nara Kwon, Jin Nam Lee
  • Publication number: 20210010042
    Abstract: The present disclosure relates to an ATP phosphoribosyltransferase (HisG) protein and a method for producing histidine using the same.
    Type: Application
    Filed: August 2, 2018
    Publication date: January 14, 2021
    Applicant: CJ CheilJedang Corporation
    Inventors: Myung Keun Park, Nara Kwon, Jin Nam Lee
  • Patent number: 10023888
    Abstract: Provided are a Corynebacterium glutamicum mutant that is resistant to high concentrations of L-glutamine, and a method of producing L-glutamine by using the mutant.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: July 17, 2018
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Jin Nam Lee, Seung Hee Back, Jin Seok Sung, Tae Ho Song, Ha Dong Woo, Kyung Chang Lee, Jae Woo Jang
  • Patent number: 9994882
    Abstract: Provided are a Corynebacterium glutamicum mutant that is resistant to high concentrations of L-glutamine, and a method of producing L-glutamine by using the mutant.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 12, 2018
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Jin Nam Lee, Seung Hee Back, Jin Seok Sung, Tae Ho Song, Ha Dong Woo, Kyung Chang Lee, Jae Woo Jang
  • Publication number: 20170292135
    Abstract: Provided are a Corynebacterium glutamicum mutant that is resistant to high concentrations of L-glutamine, and a method of producing L-glutamine by using the mutant.
    Type: Application
    Filed: September 22, 2015
    Publication date: October 12, 2017
    Inventors: Jin Nam LEE, Seung Hee BACK, Jin Seok SUNG, Tae Ho SONG, Ha Dong WOO, Kyung Chang LEE, Jae Woo JANG
  • Patent number: 8859236
    Abstract: The present invention relates to a microorganism with improved production of 5?-xanthosine monophosphate and 5?-guanine monophosphate, and more specifically, to a Corynebacterium sp. microorganism having increased proline dehydrogenase activity compared with an intrinsic activity thereof, a method for producing 5?-xanthosine monophosphate or 5?-guanine monophosphate from the culture medium obtained by culturing the transformed microorganism, and a use of the microorganism for production of 5?-xanthosine monophosphate or 5?-guanine monophosphate.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: October 14, 2014
    Assignee: CJ Cheiljedang Corporation
    Inventors: Jin Man Cho, Jin Nam Lee, Hye Won Kim, Ji Hye Lee, Nan Young Yoon, Kwang Woo Lee, Yoon Seok Oh, Jang Hee Park
  • 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
  • Publication number: 20130095529
    Abstract: The present invention relates to a microorganism with improved production of 5?-xanthosine monophosphate and 5?-guanine monophosphate, and more specifically, to a Corynebacterium sp. microorganism having increased proline dehydrogenase activity compared with an intrinsic activity thereof, a method for producing 5?-xanthosine monophosphate or 5?-guanine monophosphate from the culture medium obtained by culturing the transformed microorganism, and a use of the microorganism for production of 5?-xanthosine monophosphate or 5?-guanine monophosphate.
    Type: Application
    Filed: March 17, 2011
    Publication date: April 18, 2013
    Inventors: Jin Man Cho, Jin Nam Lee, Hye Won Kim, Ji Hye Lee, Nan Young Yoon, Kwang Woo Lee, Yoon Seok Oh, Jang Hee Park
  • Patent number: 8187840
    Abstract: The present invention relates to a microorganism producing inosine, which is one of purine nucleoside, an important material for 5?-inosinic acid synthesis, and method for producing inosine using the same. More particularly, the present invention relates to a recombinant microorganism of Corynebacterium genus producing inosine at high concentration by inactivating the gene encoding nucleoside hydrolase II and by enhancing the expression of the gene encoding 5?-nucleotidase, which still retains the characteristics of Corynebacterium ammoniagenes CJIP2401 (KCCM-10610).
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 29, 2012
    Assignee: CJ Cheiljedang Corporation
    Inventors: Young-hoon Park, Kwang-myung Cho, Hee-jong Lee, Jin-nam Lee
  • Patent number: 8168422
    Abstract: The present invention relates to a microorganism producing inosine, which is one of purine nucleoside, an important material for 5?-inosinic acid synthesis, and method for producing inosine using the same. More particularly, the present invention relates to a recombinant microorganism of Corynebacterium genus producing inosine at high concentration by inactivating the gene encoding nucleoside hydrolase II and by enhancing the expression of the gene encoding 5?-nucleotidase, which still retains the characteristics of Corynebacterium ammoniagenes CJIP2401 (KCCM-10610).
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: May 1, 2012
    Assignee: CJ Cheiljedang Corporation
    Inventors: Young-hoon Park, Kwang-myung Cho, Hee-jong Lee, Jin-nam Lee
  • Publication number: 20110318783
    Abstract: The present invention relates to a microorganism producing inosine, which is one of purine nucleoside, an important material for 5?-inosinic acid synthesis, and method for producing inosine using the same. More particularly, the present invention relates to a recombinant microorganism of Corynebacterium genus producing inosine at high concentration by inactivating the gene encoding nucleoside hydrolase II and by enhancing the expression of the gene encoding 5?-nucleotidase, which still retains the characteristics of Corynebacterium ammoniagenes CJIP2401 (KCCM-10610).
    Type: Application
    Filed: September 9, 2011
    Publication date: December 29, 2011
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Young-hoon Park, Kwang-myung Cho, Hee-jong Lee, Jin-nam Lee
  • 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
  • Publication number: 20100081173
    Abstract: The present invention relates to a microorganism producing inosine, which is one of purine nucleoside, an important material for 5?-inosinic acid synthesis, and method for producing inosine using the same. More particularly, the present invention relates to a recombinant microorganism of Corynebacterium genus producing inosine at high concentration by inactivating the gene encoding nucleoside hydrolase II and by enhancing the expression of the gene encoding 5?-nucleotidase, which still retains the characteristics of Corynebacterium ammoniagenes CJIP2401 (KCCM-10610).
    Type: Application
    Filed: January 15, 2008
    Publication date: April 1, 2010
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Young-hoon Park, Kwang-myung Cho, Hee-jong Lee, Jin-nam Lee