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 8404919 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 26, 2013

Filed:

Sep. 19, 2007
Applicants:

David Deegan, Bampton, GB;

Chris Chapman, Fairford, GB;

Saeed Ismail, Swindon, GB;

Inventors:

David Deegan, Bampton, GB;

Chris Chapman, Fairford, GB;

Saeed Ismail, Swindon, GB;

Assignee:

Tetronics (International) Limited, Swindon, Wiltshire, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21F 9/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for treating nuclear sludge comprising subjecting the nuclear sludge to a plasma treatment in a plasma chamber to melt at least some of the inorganic components of the sludge, wherein the plasma chamber comprises a crucible having a cooled inner surface, this surface cooled sufficiently such that the inorganic components in contact with the inner surface are in a solid state and form a barrier between the part of surface of the crucible with which they are in contact and the molten inorganic components of the sludge.


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