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.:

US 6907891 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 21, 2005

Filed:

Feb. 21, 2002
Applicants:

Kazumi Anazawa, Hitachi, JP;

Motoaki Sakashita, Hitachi, JP;

Makoto Nagase, Mito, JP;

Inventors:

Kazumi Anazawa, Hitachi, JP;

Motoaki Sakashita, Hitachi, JP;

Makoto Nagase, Mito, JP;

Assignees:

Hitachi, Ltd., Tokyo, JP;

Hitachi Engineering Co., Ltd., Ibaraki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21F009/28 ;
U.S. Cl.
CPC ...
Abstract

A radioactive substance decontamination method and apparatus which decontaminates a metal member contaminated by radioactive substance in a short period of time. This apparatus has (1) multiple reducing decontamination tanks having different radiation control values; (2) a carrier for immersing the metal member into the multiple reducing decontamination tanks and a washing tank; (3) a tube for transferring into the second reducing decontamination tank the reducing decontamination agent in the first reducing decontamination tank; (4) a reducing agent decomposer for decomposing a component contained in the reducing decontamination agent of the reducing decontamination tank where the radiation control value is the highest out of the reducing decontamination tanks connected by the tube; and (5) a washing tank for washing the reducing decontamination agent deposited on the decontaminated metal member.


Find Patent Forward Citations

Anazawa, Kazumi. (2005). Radioactive substance decontamination method and apparatus (U.S. Patent No. 6907891). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6907891

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