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:
Dec. 17, 1985
Filed:
Jan. 20, 1983
Applicant:
Inventors:
Masaru Hayashi, Tokyo, JP;
Tomoyuki Okumura, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21F / ;
U.S. Cl.
CPC ...
252629 ; 210682 ; 210734 ; 252631 ; 252633 ;
Abstract
A radioactive waste is solidified by adding a nonionic high molecular flocculant to a slurry containing radioactivated crud to precipitate the crud, concentrate the thus treated slurry and then separating the crud from the slurry, drying said crud, mixing the dried crud with a frit of a low melting point and filling a steel can with the resulting mixture, heating the steel can to sinter and solidify the above described mixture, and sealing a surface of the solidified body in the steel can with a sealing material.