Patents by Inventor Yasushi Sugimura

Yasushi Sugimura 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).

  • Treated waste, method for making the same and apparatus for making the same
    Patent number: 6296786
    Abstract: A treated waste has been treated so as to prevent diffusion of a substance to be disposed, of e.g., radionuclide “I”, that tends to occur when the waste is disposed of in reducing environment at an ultra-deep underground. The treated waste has a low-resolution compound containing “I”, e.g., “AgI”, and a high oxygen potential agent having a higher oxygen potential than the compound, e.g., “Fe2O3”. Ionization of the substance to be disposed, attributable to reduction of the compound, can be suppressed over a long time.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: October 2, 2001
    Assignee: Kabushiki Kaisha Kobe Seiko Sho.
    Inventors: Ryutaro Wada, Tsutomu Nishimura, Tsuyoshi Imakita, Yoshitaka Kurimoto, Yasushi Sugimura