Patents by Inventor Ok Ja Choi

Ok Ja Choi 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).

  • DTPA derivatives and metal complexes thereof, and radiation source and contrast agent including the metal complexes
    Patent number: 7666390
    Abstract: The present invention relates to diethylenetriamine pentaacetic acid (DTPA) derivates and metal complexes thereof, and radiation sources and contrast agents including the metal complexes. More particularly, the present invention relates to DTPA derivatives, which contain iodine and are useful as contrast agents for diagnosing renal function, metal complexes of the DTPA derivatives with 99mTc, 166Ho, 111In, 90Y, 153Sm, 186Re, 188Re, 68Ga, or 177Lu, which are useful as liquid radiation sources for treating vascular stenosis and contrast agents for diagnosing renal function, and radiation sources and contrast agents including the metal complexes. The DTPA derivatives and metal complexes thereof are safe because the metal complexes are excreted via the kidneys and bladder within several minutes from the time of use as liquid radiation sources for treating vascular stenosis, and are cost-effective because they are potentially useful as contrast agents and as agents for diagnosing renal function.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: February 23, 2010
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Young-Don Hong, Sun-Ju Choi, Ok Ja Choi