US Patent Issued to KANADEVIA on Aug. 26 for "Residual stress improvement method and residual stress improvement apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,400,769, issued on Aug. 26, was assigned to KANADEVIA Corp. (Osaka, Japan).

"Residual stress improvement method and residual stress improvement apparatus" was invented by Donghui Ma (Osaka, Japan), Jun Okada (Osaka, Japan) and Masanori Goto (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of improving residual stress in a canister in which fuel assemblies are loaded includes, when the canister having a cylindrical canister shell and a canister lid welded to the upper opening of the canister shell is disposed in a cylindrical cask body, filling the space above and around an upper end portion of the canister in the cask body with fill...