Patents by Inventor Taketoshi Yasumune

Taketoshi Yasumune 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 of decontaminating radioactive metallic wastes
    Patent number: 5102511
    Abstract: This invention relates to a chemical method of effectively decontaminating metallic wastes that have been contaminated by radioactive substances and which have resulted from the demolition of nuclear power plants or reactors in operation. The method is that when the increase in the amount of dissolution of metal ions from the wastes causes the potential of the aqueous sulfuric acid to increase beyond a certain level, the dissolved metal ions are reduced electrolytically to control the potential of said aqueous sulfuric acid to become lower than said certain level.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: April 7, 1992
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Takeshi Suwa, Nobuhide Kuribayashi, Taketoshi Yasumune