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:
Jun. 29, 1993
Filed:
Aug. 21, 1991
Applicant:
Inventors:
Assignee:
Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B / ; C01G / ;
U.S. Cl.
CPC ...
423 11 ; 423-3 ; 423251 ; 252627 ;
Abstract
A method of concentrating a plutonium nitrate solution comprising the steps of cooling the plutonium nitrate solution to a temperature of -60.degree. to -40.degree. C. to produce a frozen matter comprising water and nitric acid, and filtering the thus produced frozen matter to recover a concentrated plutonium nitrate solution as a filtrate.