The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2006
Filed:
Nov. 21, 2003
Masami Enda, Kanagawa-ken, JP;
Yumi Yaita, Tokyo, JP;
Mitsuyoshi Sato, Kanagawa-ken, JP;
Hitoshi Sakai, Kanagawa-ken, JP;
Takeshi Kanasaki, Kanagawa-ken, JP;
Ichiro Inami, Tokyo, JP;
Masami Enda, Kanagawa-ken, JP;
Yumi Yaita, Tokyo, JP;
Mitsuyoshi Sato, Kanagawa-ken, JP;
Hitoshi Sakai, Kanagawa-ken, JP;
Takeshi Kanasaki, Kanagawa-ken, JP;
Ichiro Inami, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A method for chemically decontaminating radioactive material. The method includes reducing-dissolving step for setting surface of radioactive material in contact with reducing decontamination liquid including mono-carboxylic acid and di-carboxylic acid as dissolvent; and oxidizing-dissolving step for setting the surface of the radioactive material in contact with oxidizing decontamination liquid including oxidizer. The method may include repeated pairs of steps, each pair including the reducing-dissolving step and the oxidizing-dissolving step. The mono-carboxylic acid may include formic acid, and the di-carboxylic acid includes oxalic acid. The oxidizer may be ozone, permanganic acid or permanganate.