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:
Mar. 19, 2019
Filed:
Sep. 10, 2013
The Jikei University, Tokyo, JP;
Dowa Holdings Co., Ltd., Tokyo, JP;
Yoshihisa Namiki, Tokyo, JP;
Toshihiko Ueyama, Tokyo, JP;
Takayuki Yoshida, Tokyo, JP;
Ryoei Watanabe, Tokyo, JP;
THE JIKEI UNIVERSITY, Tokyo, JP;
DOWA HOLDINGS CO., LTD., Tokyo, JP;
Abstract
Disclosed herein is a radioactive cesium decontaminator, a method of producing a radioactive cesium decontaminator, and a method of removing radioactive cesium using the decontaminator. The radioactive cesium decontaminator is formed by agglomeration of primary particles. The primary particles have a magnetic particle as a core portion, a coating layer made of an organic material coating the magnetic particle, and a capturing compound made of ferrocyanide material formed on the coating layer. A cumulative diameter Dof the decontaminator is in a range of from 2.0 μm to 50 μm, and a value of a cumulative diameter distribution (D−D)/Dis less than 6. The decontaminator is made by adding a ferrocyanide aqueous solution and an aqueous solution containing at least one transition metal into a suspension liquid containing a precursor formed by magnetic particles coated with organic monomer or polymer while applying a strong shear force.