Patents by Inventor CHOI Kyung Seok

CHOI Kyung Seok 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).

  • Gadobutrol intermediate and gadobutrol production method using same
    Patent number: 11091449
    Abstract: Disclosed are: an intermediate capable of high-purity synthesis of gadobutrol which can be used as an MRI contrast agent; and a gadobutrol production method using same. The gadobutrol intermediate is represented by Chemical Formula 2 in the specification.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: August 17, 2021
    Assignee: ENZYCHEM LIFESCIENCES CORPORATION
    Inventors: Jae Young Lee, Jong Soo Lee, Byung Kyu Kang, Sang Oh Lee, Byouong Woo Lee, Dae Myoung Yun, Jae Hun Bang, Choi Kyung Seok
  • GADOBUTROL INTERMEDIATE AND GADOBUTROL PRODUCTION METHOD USING SAME
    Publication number: 20200181098
    Abstract: Disclosed are: an intermediate capable of high-purity synthesis of gadobutrol which can be used as an MRI contrast agent; and a gadobutrol production method using same. The gadobutrol intermediate is represented by Chemical Formula 2 in the specification.
    Type: Application
    Filed: August 29, 2018
    Publication date: June 11, 2020
    Inventors: Jae Young LEE, Jong Soo LEE, Byung Kyu KANG, Sang oh LEE, Byouong Woo LEE, Dae Myoung YUN, Jae Hun BANG, CHOI Kyung Seok