ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,628, issued on April 15, was assigned to Fresenius Medical Care Holdings Inc. (Waltham, Mass.).

"Systems and methods for measuring electrical characteristic of medical fluids" was invented by Philip Scott James (Orinda, Calif.), Jon F. Moss (Antioch, Calif.), Lynn E. Jensen (Syracuse, Utah), Mary Hoover (Shawnee, Okla.) and Spencer Barrett (Oklahoma City).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for measuring conductivity of a fluid. The device including a chamber and at least two electrodes. The chamber includes an inlet, an outlet, an upper surface, and a lower surface that runs separate from the upper surface. The fluid enters the ch...