ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,001, issued on Sept. 23, was assigned to Fresenius Medical Care Holdings Inc. (Waltham, Mass.).

"Calculating a depletion time during dialysis" was invented by David Yuds (Hudson, N.H.), Martin Joseph Crnkovich (Walnut Creek, Calif.) and Ken Chhi (Fremont, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a dialysis machine that comprises a dialyzer, a fluid source, a first line connected to the fluid source, and a container containing bicarbonate. The container connects to the first line and the fluid flows from the fluid source, through the first line, to the container. The dialysis machine further includes a second l...