Patents by Inventor Shin-ichiro Torata

Shin-ichiro Torata 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 separating and recovering ruthenium from high-level radioactive liquid waste
    Patent number: 5437847
    Abstract: A method of recovering volatile ruthenium, which is separated and formed by constant potential electrolysis from high-level radioactive liquid waste discharged from the reprocessing step of spent nuclear fuel by purex process, in the form of stable solid. The method comprises electrolyzing at a constant potential a high-level radioactive liquid waste from which palladium has substantially been removed in advance, thereby vaporizing ruthenium, bringing the vaporized ruthenium into contact with an aqueous solution of formic acid to precipitate ruthenium oxide, and separating the precipitate from the aqueous solution of formic acid.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: August 1, 1995
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Masayuki Yoneya, Kazuhiro Kawamura, Shin-ichiro Torata, Takeshi Takahashi
  • Nickel-base alloy for glass-contracting member used in unenergized state
    Patent number: 5330710
    Abstract: A nickel-base alloy for a glass-contacting member used in an unenergized state and having a composition comprising by weight 25 to 40% of chromium, 10 to 45% of cobalt, optionally 0.1 to 3.0% of titanium and optionally 0.01 to 0.05% of at least one element selected from among rare earth metals with the balance consisting of nickel and unavoidable impurities.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: July 19, 1994
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Toshio Masaki, Noriaki Sasaki, Shin-ichiro Torata, Hiroshi Igarashi, Tetsuya Shimizu, Tomohito Iikubo