ALEXANDRIA, Va., May 12 -- United States Patent no. 12,625,041, issued on May 12, was assigned to IDEX Health & Science LLC (Rohnert Park, Calif.).

"Automated sample preparation for spent media analysis" was invented by Quan Liu (Petaluma, Calif.), John Barnacle (Petaluma, Calif.) and Eric Beemer (Anacortes, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for processing a sample of a cell culture composition includes diluting the sample followed by filtering the diluted sample, wherein the dilution may be at least 10 parts by volume of a diluent to one part sample, and the filter may be a porous membrane with a molecular weight cutoff of less than 20,000 Daltons. The dilution may be carried out...