ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,822, issued on March 24, was assigned to Marposs (Chelles, France).

"System and method for leak testing a battery cell" was invented by Elie Cohen (Paris) and Giuseppe Vollaro (San Lazzaro di Savena, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "Leak testing system (100) and method for leak testing a finished battery cell, comprising a vacuum chamber (4), a vacuum pump (6), a detecting and measuring system (1) to detect gases and/or vapors escaping from the cell, the gases and/or vapors deriving from parts and/or substances inside in the cell, and a capillary element (2) which connects the detecting and measuring system to the vacuum chamber...