Patents by Inventor Keum Soon Lee

Keum Soon 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).

  • Purification method of lactone compounds containing unsaturated alkyl group by extraction with silver ion solution
    Patent number: 8193345
    Abstract: The present invention relates to a method for separating and purifying a lactone compound with an unsaturated alkyl group from a lactone compound with a saturated alkyl group which is an analog thereof. More specifically, the present invention relates to a method for effectively separating a lactone compound with an unsaturated alkyl group such as FK506 at high purity by extraction with a silver ion (Ag+) solution without use of column chromatography.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: June 5, 2012
    Assignee: Genotech Corp.
    Inventors: Jae Jong Kim, Si Kyu Lim, Mi Ok Lee, Sang Myoun Lim, Bo-mi Lee, Dong Hwan Kim, Keum Soon Lee, Jeoung Hyun Ryu
  • METHOD OF EXTRACTION AND YIELD-UP OF TRICYCLO COMPOUNDS BY ADDING A SOLID ADSORBENT RESIN AS THEIR CARRIER IN FERMENTATION MEDIUM
    Publication number: 20110183385
    Abstract: The present invention relates to a method of fermenting and purifying tricyclo compounds, specifically FK506 and/or FK520, and more particularly, to a method of purifying tricyclo compounds by adding a hydrophobic absorbent resin as a carrier in culturing FK506 and/or FK520 producing bacteria.
    Type: Application
    Filed: May 6, 2008
    Publication date: July 28, 2011
    Inventors: Jae Jong Kim, Si Kyu Lim, Mi Ok Lee, Sang Myoun Lim, Bo-mi Lee, Dong Hwan Kim, Jeoung Hyun, Keum Soon Lee
  • PURIFICATION METHOD OF LACTONE COMPOUNDS CONTAINING UNSATURATED ALKYL GROUP BY EXTRACTION WITH SILVER ION SOLUTION
    Publication number: 20110172413
    Abstract: The present invention relates to a method for separating and purifying a lactone compound with an unsaturated alkyl group from a lactone compound with a saturated alkyl group which is an analog thereof. More specifically, the present invention relates to a method for effectively separating a lactone compound with an unsaturated alkyl group such as FK506 at high purity by extraction with a silver ion (Ag+) solution without use of column chromatography.
    Type: Application
    Filed: March 18, 2011
    Publication date: July 14, 2011
    Applicant: GENOTECH CO., LTD
    Inventors: Jae Jong Kim, Si Kyu Lim, Mi Ok Lee, Sang Myoun Lim, Bo-mi Lee, Dong Hwan Kim, Keum Soon Lee, Jeoung Hyun Ryu
  • Pichia pastoris strain for producing lactoferrin and methods of use
    Patent number: 6423509
    Abstract: The present invention relates to a method of mass-producing lactoferrin polypeptides from yeast which is resistant to lactoferrin polypeptides. The present invention also provides Pichia strains, especially Pichia pastoris KCTC 0500BP, that are resistant to lactoferrin polypeptides.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: July 23, 2002
    Assignee: Samyang Genex Corporation
    Inventors: Chang Keun Sung, In Sun Joo, Moon Sook Woo, Sang Kyu Kim, Jeong Hyun Lee, Keum Soon Lee, Seung Suh Hong, Hyun-Soo Lee, Young Ho Kim