Patents by Inventor Jin Geun Choi

Jin Geun 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).

  • Publication number: 20240287559
    Abstract: The present disclosure relates to a novel MdtH variant and methods for producing O-phosphoserine and cysteine and a derivative of cysteine by using the same.
    Type: Application
    Filed: September 6, 2021
    Publication date: August 29, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Hee-jin SIM, Hye Min PARK, Jin-Geun CHOI, Jin Nam LEE, Hwi-Min JUNG
  • Patent number: 10815509
    Abstract: Disclosed is a microorganism of Escherichia sp. producing O-acetyl homoserine, and a method of producing O-acetyl homoserine in high yield using the microorganism.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: October 27, 2020
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Hyun Ah Kim, Ju Hee Seo, Yong Uk Shin, So Young Kim, Sang Kyoum Kim, Kwang Ho Na, Jee Yeon Bae, Sung Kwang Son, Hye Ryun Yoo, Jin Geun Choi
  • Publication number: 20200024626
    Abstract: Disclosed is a microorganism of Escherichia sp. producing O-acetyl homoserine, and a method of producing O-acetyl homoserine in high yield using the microorganism.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 23, 2020
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Hyun Ah KIM, Ju Hee SEO, Yong Uk SHIN, So Young KIM, Sang Kyoum KIM, Kwang Ho NA, Jee Yeon BAE, Sung Kwang SON, Hye Ryun YOO, Jin Geun CHOI
  • Patent number: 10501763
    Abstract: The present disclosure relates to a microorganism producing O-acetylhomoserine with high efficiency and a method for producing O-acetylhomoserine and L-methionine using the microorganism. The present disclosure provides a microorganism producing O-acetylhomoserine having an enhanced activity of a protein which is predicted to export O-acetylhomoserine, and a method for producing O-acetylhomoserine and L-methionine using the microorganism.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: December 10, 2019
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Jee Yeon Bae, Hyun Ah Kim, Yong Uk Shin, So Young Kim, Sang Kyoum Kim, Kwang Ho Na, Ju Hee Seo, Sung Kwang Son, Hye Ryun Yoo, Jin Geun Choi
  • Patent number: 10465217
    Abstract: Disclosed is a microorganism of Escherichia sp. producing O-acetyl homoserine, and a method of producing O-acetyl homoserine in high yield using the microorganism.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 5, 2019
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Hyun Ah Kim, Ju Hee Seo, Yong Uk Shin, So Young Kim, Sang Kyoum Kim, Kwang Ho Na, Jee Yeon Bae, Sung Kwang Son, Hye Ryun Yoo, Jin Geun Choi
  • Patent number: 10378031
    Abstract: The present disclosure relates to a novel O-acetylhomoserine sulfhydrylase variant, a polynucleotide encoding the same, a vector comprising the polynucleotide, a strain capable of expressing the variant, and a method for producing L-methionine using the variant.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: August 13, 2019
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Imsang Lee, Sung Kwang Son, Hyeryun Yoo, Jae Hee Lee, Joo Hee Lee, Jin Sook Chang, Jin-Geun Choi, So Young Kim, Yong Uk Shin
  • Publication number: 20180355389
    Abstract: The present disclosure relates to a novel O-acetylhomoserine sulfhydrylase variant, a polynucleotide encoding the same, a vector comprising the polynucleotide, a strain capable of expressing the variant, and a method for producing L-methionine using the variant.
    Type: Application
    Filed: October 13, 2016
    Publication date: December 13, 2018
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Imsang Lee, Sung Kwang Son, Hyeryun Yoo, Jae Hee Lee, Joo Hee Lee, Jin Sook Chang, Jin-Geun Choi, So Young Kim, Yong Uk Shin
  • Publication number: 20180042267
    Abstract: The present invention relates to a feed additive composition having a high content of L-methionine, and an animal feed composition comprising the feed additive composition. More specifically, the present invention relates to a feed additive composition comprising 60 to 99.9 wt % of L-methionine together with L-phenylalanine and L-tyrosine, and to an animal feed composition comprising the feed additive composition.
    Type: Application
    Filed: March 15, 2016
    Publication date: February 15, 2018
    Inventors: In Kyung HEO, Sung Kwang SON, Jin Geun CHOI, So Young KIM, Yong Uk SHIN, Jae Hee LEE, Jin Woo SUNG, Youn Jae LEE, Jin Seong RIM, Jun Young JUNG
  • Publication number: 20170137853
    Abstract: The present disclosure relates to a microorganism producing O-acetylhomoserine with high efficiency and a method for producing O-acetylhomoserine and L-methionine using the microorganism. The present disclosure provides a microorganism producing O-acetylhomoserine having an enhanced activity of a protein which is predicted to export O-acetylhomoserine, and a method for producing O-acetylhomoserine and L-methionine using the microorganism.
    Type: Application
    Filed: June 5, 2015
    Publication date: May 18, 2017
    Inventors: Jee Yeon BAE, Hyun Ah KIM, Yong Uk SHIN, So Young KIM, Sang Kyoum KIM, Kwang Ho NA, Ju Hee SEO, Sung Kwang SON, Hye Ryun YOO, Jin Geun CHOI
  • Publication number: 20170101655
    Abstract: Disclosed is a microorganism of Escherichia sp. producing O-acetyl homoserine, and a method of producing O-acetyl homoserine in high yield using the microorganism.
    Type: Application
    Filed: June 22, 2015
    Publication date: April 13, 2017
    Inventors: Hyun Ah KIM, Ju Hee SEO, Yong Uk SHIN, So Young KIM, Sang Kyoum KIM, Kwang Ho NA, Jee Yeon BAE, Sung Kwang SON, Hye Ryun YOO, Jin Geun CHOI
  • Patent number: 9217166
    Abstract: The present invention relates to a D-psicose 3-epimerase variant with improved thermostability by substituting an amino acid at a specific position of an amino acid sequence of a wild type D-psicose 3-epimerase. Further, the present invention provides a recombinant expression vector including a gene of the D-psicose 3-epimerase variant, and a recombinant strain transformed with the recombinant expression vector. Furthermore, the present invention provides an immobilized reactor prepared using the D-psicose 3-epimerase variant or the recombinant strain, and a method of continuously producing D-psicose using the immobilized reactor.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 22, 2015
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Yang Hee Kim, Jin Ha Kim, Young Mi Lee, Young Ho Hong, Min Hae Kim, Seong Bo Kim, Seung Won Park, Seung Hyun Oh, Deok Kun Oh, Jin Geun Choi
  • Publication number: 20140199732
    Abstract: The present invention relates to a D-psicose 3-epimerase variant with improved thermostability by substituting an amino acid at a specific position of an amino acid sequence of a wild type D-psicose 3-epimerase. Further, the present invention provides a recombinant expression vector including a gene of the D-psicose 3-epimerase variant, and a recombinant strain transformed with the recombinant expression vector. Furthermore, the present invention provides an immobilized reactor prepared using the D-psicose 3-epimerase variant or the recombinant strain, and a method of continuously producing D-psicose using the immobilized reactor.
    Type: Application
    Filed: August 21, 2012
    Publication date: July 17, 2014
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Yang Hee Kim, Jin Ha Kim, Young Mi Lee, Young Ho Hong, Min Hae Kim, Seong Bo Kim, Seung Won Park, Seung Hyun Oh, Deok Kun Oh, Jin Geun Choi