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 8052947 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 08, 2011

Filed:

Dec. 26, 2007
Applicants:

Tsuyoshi Yaita, Hyogo, JP;

Hideaki Shiwaku, Hyogo, JP;

Shinichi Suzuki, Ibaraki, JP;

Yoshihiro Okamoto, Hyogo, JP;

Inventors:

Tsuyoshi Yaita, Hyogo, JP;

Hideaki Shiwaku, Hyogo, JP;

Shinichi Suzuki, Ibaraki, JP;

Yoshihiro Okamoto, Hyogo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for separating and recovering trivalent and tetravalent actinoids in a simple and less costly manner without using an organophosphorus compound is provided. This method selectively separates and recovers the tetravalent actinoid plutonium Pu (IV) and the trivalent actinoids americium Am (III) and curium Cm (III) from trivalent lanthanoids Ln (III), etc. with the use of an extractant having a functional group with neutral multidentate ligand activity which is a hybrid donor type organic compound having both of donor atoms, i.e., an oxygen atom and a nitrogen atom.


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Yaita, Tsuyoshi. (2011). Method for selective separation of trivalent and tetravalent actinoids from trivalent lanthanoids using hybrid donor type extractant having functional group carrying active oxygen and nitrogen atoms (U.S. Patent No. 8052947). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8052947

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