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. 09, 2016
Filed:
Sep. 13, 2012
Masato Okamura, Yokohama, JP;
Tetsuo Oosato, Tokyo, JP;
Kazuo Murakami, Kawasaki, JP;
Seiji Yamamoto, Tokyo, JP;
Hiroyuki Arai, Kamakura, JP;
Hidehiro Urata, Yokohama, JP;
Hajime Hirasawa, Yokohama, JP;
Osamu Shibasaki, Yokohama, JP;
Koji Negishi, Yokohama, JP;
Masato Okamura, Yokohama, JP;
Tetsuo Oosato, Tokyo, JP;
Kazuo Murakami, Kawasaki, JP;
Seiji Yamamoto, Tokyo, JP;
Hiroyuki Arai, Kamakura, JP;
Hidehiro Urata, Yokohama, JP;
Hajime Hirasawa, Yokohama, JP;
Osamu Shibasaki, Yokohama, JP;
Koji Negishi, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
A method for injecting a corrosion inhibitor injecting an oxidant and an anticorrosive agent-pH adjusting agent complex including an anticorrosive agent and a pH adjusting agent adsorbed on a surface of the anticorrosive agent into high temperature water in contact with a surface of a metal structural material and irradiating the high temperature water with a radioactive ray or an ultraviolet ray, wherein the anticorrosive agent of the anticorrosive agent-pH adjusting agent complex has, on the surface of the anticorrosive agent, an active site where the pH adjusting agent reacts with the oxidant, and the pH adjusting agent present on the surface of the anticorrosive agent of the anticorrosive agent-pH adjusting agent complex and/or in the high temperature water is oxidized with the oxidant by the irradiation with the radioactive ray or the ultraviolet ray to change pH adjusting ability of the pH adjusting agent and shift a pH of the high temperature water to a neutral side, and thereby deposition of the anticorrosive agentto the metal structural materialis accelerated.