Patents by Inventor Mi-Hae Cho

Mi-Hae Cho 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 of isolating 1,3-propanediol or 1,3-propanediol and 1,2-propanediol from solution containing 1,3-propanediol, 1,2-propanediol, glycerol, and glucose
    Patent number: 7488855
    Abstract: A method of isolating 1,3-propanediol from a solution containing 1,3-propanediol, 1,2-propanediol, glycerol, and glucose is provided. The method includes: obtaining a concentrate by concentrating the solution via reduced pressure evaporation; dissolving the concentrate in a solvent selected from the group consisting of ethyl acetate, methyl ethyl ketone, and a mixture thereof and leaving the solution alone to fractionate the compounds in a solvent layer and a water layer; and loading the solvent layer in a silica-filled column under a low pressure liquid chromatography condition and eluting the solvent layer with a mixed solvent of methanol and at least one solvent which is miscible with methanol and has a polarity lower than methanol.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: February 10, 2009
    Assignee: CJ Corporation
    Inventors: Young-Hoon Park, Kwang-Myung Cho, Seong-Uk Kang, Jin-Hyun Kim, Mi-Hae Cho
  • Method of Isolating 1,3-Propanediol or 1,3-Propanediol and 1,2-Propanediol from Solution Containing 1,3-Propanediol, 1,2-Propanediol, Glycerol, and Glucose
    Publication number: 20080097130
    Abstract: A method of isolating 1,3-propanediol from a solution containing 1,3-propanediol, 1,2-propanediol, glycerol, and glucose is provided. The method includes: obtaining a concentrate by concentrating the solution via reduced pressure evaporation; dissolving the concentrate in a solvent selected from the group consisting of ethyl acetate, methyl ethyl ketone, and a mixture thereof and leaving the solution alone to fractionate the compounds in a solvent layer and a water layer; and loading the solvent layer in a silica-filled column under a low pressure liquid chromatography condition and eluting the solvent layer with a mixed solvent of methanol and at least one solvent which is miscible with methanol and has a polarity lower than methanol.
    Type: Application
    Filed: September 1, 2005
    Publication date: April 24, 2008
    Applicant: CJ CORPORATION
    Inventors: Young Hoon Park, Kwang-Myung Cho, Seong-Uk Kang, Jin-Hyun Kim, Mi-Hae Cho