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:
Feb. 04, 1992
Filed:
Dec. 11, 1990
Marc Lemaire, Villeurbanne, FR;
Alain Guy, Pontcarre, FR;
Jacques Foos, Orsay, FR;
Rodolphe Chomel, Orange, FR;
Pierre Doutreluigne, Bagnols/Ceze, FR;
Thierry Moutarde, Piolenc, FR;
Vincent Guyon, Paris, FR;
Henri Le Roy, Equeurdreville, FR;
Cogema-Compaignie Generale des Matieres Nucleaires, Velizy Villacoublay, FR;
Abstract
A method for separating plutonium from uranium and from fission products with the aid of crown ether compounds comprising contacting an aqueous solution A0 containing Pu, U and fission products with an organic solvent O0 containing at least one crown ether compound to obtain an organic solution O1 containing Pu and U; extracting U from the organic solution O1 with an aqueous solution A4 such as water or nitric acid to obtain an aqueous solution A5 containing U and an organic solution O3 containing mainly of Pu and recovering Pu from the organic solution using an aqueous solution A6 such as sulfuric acid.