ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,323, issued on May 27.

"Device for improving mixing of a liquid and a powdered substance" was invented by Vienar Roaks (Vasteras, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "The technology includes a device for mixing a liquid and a powdered substance in a vessel. The device includes a body having a planar surface with a grid that includes a plurality of openings and at least two elongated apertures arranged in a circumferential direction. The openings and the elongated apertures are co-planar, with the at least two elongated apertures having a cross-sectional area that is more than twice as large as a cross-sectional area of the openings ...