ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,434,209, issued on Oct. 7.
"Universal mixture maker" was invented by Fred Hsu (Port Washington, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A volumetric instrument serving as a universal mixture maker. The instrument comprises fixed-shape solute cups that can be submerged in and fastened to solvent containers. The design allows a human operator to run an iterative method which finds a solution to a set of multivariate equations that would otherwise require situation-specific analytical calculations and the use of weighing scales. The iterative method can solve for one or more variables including solute volume, solvent volume, final mixture volume...