Patents by Inventor Hyo Hyoung Lee

Hyo Hyoung 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).

  • METHOD FOR PURIFYING 1,4-DIAMINOBUTANE
    Publication number: 20180127351
    Abstract: A method for purifying 1,4-diaminobutane comprising the steps of: separating a second composition including carbonate salt of 1,4-diaminobutane from a first composition including carbonate salt of 1,4-diaminobutane by distillation; and removing carbonate from carbonate salt of 1,4-diaminobutane included in the second composition to recover 1,4-diaminobutane.
    Type: Application
    Filed: May 4, 2016
    Publication date: May 10, 2018
    Inventors: Won Sik GWAK, Hong Xian LI, Hyun Ju WON, Hyo Hyoung LEE, Kyung Su NA, Su Jin PARK, Young Lyeol YANG, Hye Won UM, Chang Yub OH, Kyoung Min LEE
  • MICROORGANISM HAVING ENHANCED PRODUCTIVITY OF LACTIC ACID AND A PROCESS FOR PRODUCING LACTIC ACID USING THE SAME
    Publication number: 20170175150
    Abstract: The present invention relates to Saccharomyces sp. capable of producing lactic acid with a decreased activity of pyruvate decarboxylase (PDC) and increased activities of aldehyde dehydrogenase (ALD) and acetyl-CoA synthetase (ACS), and a method of producing lactic acid from the culture medium obtained by culturing the microorganism.
    Type: Application
    Filed: May 8, 2015
    Publication date: June 22, 2017
    Inventors: Eun Bin YANG, Tae Hee LEE, Seon Hye KIM, Gyu Hyeon SONG, Cheol Woong HA, Kyung Su NA, Young Lyeol YANG, Min Sun KANG, Hyo Hyoung LEE
  • Microorganism of the genus having enhanced L-tryptophan productivity and a method for producing L-tryptophan using the same
    Patent number: 9587261
    Abstract: The present invention relates to microorganisms of Escherichia coli having enhanced L-tryptophan productivity and to a method for producing L-tryptophan using the same. More particularly, the present invention relates to an Escherichia coli variant in which repression and attenuation control of the tryptophan operon is released and accumulation of anthranilate is reduced and thereby enhancing L-tryptophan productivity. The present invention also relates to a method for producing L-tryptophan using the Escherichia coli variant.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 7, 2017
    Assignee: CJ Cheiljedang Corporation
    Inventors: Kwang Ho Lee, Hye Min Park, Hyo Hyoung Lee, Young Bin Hwang, Seok Myung Lee
  • Microorganism of the Genus Escherichia Having Enhanced L-Tryptophan Productivity and a Method for Producing L-Tryptophan Using the Same
    Publication number: 20150147788
    Abstract: The present invention relates to microorganisms of Escherichia coli having enhanced L-tryptophan productivity and to a method for producing L-tryptophan using the same. More particularly, the present invention relates to an Escherichia coli variant in which repression and attenuation control of the tryptophan operon is released and accumulation of anthranilate is reduced and thereby enhancing L-tryptophan productivity. The present invention also relates to a method for producing L-tryptophan using the Escherichia coli variant.
    Type: Application
    Filed: January 10, 2013
    Publication date: May 28, 2015
    Inventors: Kwang Ho Lee, Hye Min Park, Hyo Hyoung Lee, Young Bin Hwang, Seok Myung Lee