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:
May. 17, 2022
Filed:
Jun. 10, 2019
Westinghouse Electric Sweden Ab, Västerås, SE;
Simon Charles Middleburgh, Chester, GB;
Mattias Puide, Västerås, SE;
Lars Hallstadius, Västerås, SE;
Magnus Limbäck, Västerås, SE;
Paul Blair, Västerås, SE;
Westinghouse Electric Sweden AB, Västerås, SE;
Abstract
A uranium oxide fuel pellet having an inner region and an outer rim region about the inner region, and that the fuel pellet is cylindrical and the inner region and outer rim region are coaxial cylindrical regions. The outer rim region has an excess of oxygen in comparison to the inner region, wherein high burnup structure (HBS) formation will be suppressed or delayed. Preferably, the excess oxygen is obtained by a chemical treatment by immersing the pellet in hydrogen peroxide (HO) or potassium permanganate (KMnO) in solution.