Patents by Inventor Yukyung LIM

Yukyung LIM 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 organic acids
    Patent number: 11420924
    Abstract: Provided is a method for purifying organic acids, including: a first extraction which includes separating an aqueous solution of organic acids into a first organic layer and a first aqueous solution layer by adding a solvent containing an amine and an alcohol; removing the alcohol from the separated first organic layer; and a second extraction which includes separating the first organic layer from which the alcohol has been removed into a second organic layer and a second aqueous solution layer by adding water.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: August 23, 2022
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Nam, Kyung Moo Lee, Yukyung Lim
  • METHOD FOR PURIFYING ORGANIC ACIDS
    Publication number: 20210363092
    Abstract: Provided is a method for purifying organic acids, comprising: a first extraction, comprising separating an aqueous solution of organic acids into a first organic layer and a first aqueous solution layer by adding a solvent containing an amine and an alcohol; removing the alcohol from the separated first organic layer; and a second extraction, comprising separating the first organic layer from which the alcohol has been removed into a second organic layer and a second aqueous solution layer by adding water.
    Type: Application
    Filed: October 4, 2019
    Publication date: November 25, 2021
    Inventors: Hyun NAM, Kyung Moo LEE, Yukyung LIM