Patents by Inventor Kwon Mo Yoo

Kwon Mo Yoo 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 distillation of sulfur for the preparing radioactive phosphorous nuclide
    Patent number: 7266173
    Abstract: A method for distillation of sulfur for preparing radioactive phosphorous nuclide includes the steps of: charging powdered sulfur into a target tube designed to have an upper and a bottom neck; degassing the target tube to form a vacuum therein, followed by heating the upper neck to seal the target tube; irradiating neutrons into the sealed target tube to produce radioactive phosphorous nuclide; heating the distillation zone to distill the remaining unreacted sulfur; and cleaving the target tube at the bottom neck to separate the distillation and the cooling zone from each other, the separated zones containing the radioactive phosphorous nuclide and the unreacted sulfur, respectively, whereby the radioactive phosphorous nuclide of high purity can be prepared while the sulfur can be recovered at high efficiency.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: September 4, 2007
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Hyon Soo Han, Ul Jae Park, Hyeon Young Shin, Kwon Mo Yoo
  • Method for distillation of sulfur for the preparing radioactive phosphorous nuclide
    Publication number: 20030095915
    Abstract: A method for distillation of sulfur for preparing radioactive phosphorous nuclide includes the steps of: charging powdered sulfur into a target tube designed to have an upper and a bottom neck; degassing the target tube to form a vacuum therein, followed by heating the upper neck to seal the target tube; irradiating neutrons into the sealed target tube to produce radioactive phosphorous nuclide; heating the distillation zone to distill the remaining unreacted sulfur; and cleaving the target tube at the bottom neck to separate the distillation and the cooling zone from each other, the separated zones containing the radioactive phosphorous nuclide and the unreacted sulfur, respectively, whereby the radioactive phosphorous nuclide of high purity can be prepared while the sulfur can be recovered at high efficiency.
    Type: Application
    Filed: June 4, 2002
    Publication date: May 22, 2003
    Inventors: Hyon Soo Han, Ul Jae Park, Hyeon Young Shin, Kwon Mo Yoo