Patents by Inventor Keun-Chul Lee

Keun-Chul 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).

  • Microorganisms and processes for producing L-glutamine
    Patent number: 6984506
    Abstract: The present invention provides novel microorganisms, Brevibacterium lactofermentum CJJA21 (Accession No. KCCM-10222), which is resistant to sodium azide, and Brevibacterium lactofermentum CJJA22 (Accession No. KCCM-10223), which is resistant to ?-aminobutyric acid. These microorganisms are capable of producing L-glutamine in a higher yield than the known strains. The present invention further provides processes for producing L-glutamine using the microorganisms of the invention.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: January 10, 2006
    Assignee: Cheil Jedang Corporation
    Inventors: Sung-Sik Park, Seung-Hyun Suh, Keun-Chul Lee, Dong-Woo Lee, Cheon-Ju Kim, Sang-Cheol Jeong
  • Microorganisms and processes for producing L-glutamine
    Publication number: 20050250187
    Abstract: The present invention provides novel microorganisms, Brevibacterium lactofermentum CJJA21 (Accession No. KCCM-10222), which is resistant to sodium azide, and Brevibacterium lactofermentum CJJA22 (Accession No. KCCM-10223), which is resistant to ?-aminobutyric acid. These microorganisms are capable of producing L-glutamine in a higher yield than the known strains. The present invention further provides processes for producing L-glutamine using the microorganisms of the invention.
    Type: Application
    Filed: July 15, 2005
    Publication date: November 10, 2005
    Inventors: Sung-Sik Park, Seung-Hyun Suh, Keun-Chul Lee, Dong-Woo Lee, Cheon-Ju Kim, Sang-Cheol Jeong
  • Microorganisms and processes for producing L-glutamine
    Publication number: 20030096380
    Abstract: The present invention provides novel microorganisms, Brevibacterium lactofermentum CJJA21 (Accession No. KCCM-10222), which is resistant to sodium azide, and Brevibacterium lactofermentum CJJA22 (Accession No. KCCM-10223), which is resistant to &agr;-aminobutyric acid. These microorganisms are capable of producing L-glutamine in a higher yield than the known strains. The present invention further provides processes for producing L-glutamine using the microorganisms of the invention.
    Type: Application
    Filed: July 17, 2002
    Publication date: May 22, 2003
    Inventors: Sung-Sik Park, Seung-Hyun Suh, Keun-Chul Lee, Dong-Woo Lee, Cheon-Ju Kim, Sang-Cheol Jeong