Patents by Inventor Soon Min Chung

Soon Min Chung 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).

  • Process for preparation of iopromide
    Patent number: 8420858
    Abstract: The present invention relates to a novel process for preparing iopromide which is used as a contrast agent for X-ray, wherein 5-methoxyacetylamino-2,4,6-triiodoisophthalic acid (2,3-diacetoxypropyl)amide chloride of formula (19) and 5-methoxyacetylamino-2,4,6-triiodoisophthalic acid [(2,3-dihydroxy-N-methylpropyl)-(2,3-diacetoxypropyl)]diamide of formula (20) are introduced as intermediates, by which a bismer by-product generated during the preparation process can be removed even without an additional removal procedure and thus iopromide with high purity can be prepared in high yield.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 16, 2013
    Assignee: LG Life Sciences Ltd.
    Inventors: Kook Sang Hwang, Soon Min Chung, Chang Ki Kim, Bok Tae Kim, Ju Young Lee, Byeong Cheol Kim, Goon Ho Joe
  • NOVEL PROCESS FOR PREPARATION OF IOPROMIDE
    Publication number: 20110034730
    Abstract: The present invention relates to a novel process for preparing iopromide which is used as a contrast agent for X-ray, wherein 5-methoxyacetylamino-2,4,6-triiodoisophthalic acid (2,3-diacetoxypropyl)amide chloride of formula (19) and 5-methoxyacetylamino-2,4,6-triiodoisophthalic acid [(2,3-dihydroxy-N-methylpropyl)-(2,3-diacetoxypropyl)]diamide of formula (20) are introduced as intermediates, by which a bismer by-product generated during the preparation process can be removed even without an additional removal procedure and thus iopromide with high purity can be prepared in high yield.
    Type: Application
    Filed: April 17, 2009
    Publication date: February 10, 2011
    Inventors: Kook Sang Hwang, Soon Min Chung, Chang Ki Kim, Bok Tae Kim, Ju Young Lee, Byeong Cheol Kim, Goon Ho Joe