ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,178, issued on Nov. 3, was assigned to Energizer Brands LLC (St. Louis).
"Electrochemical cell grommet" was invented by Erik Mortensen (Middleton, Wis.), Todd Geisser (Middleton, Wis.) and Michael Corliss (Middleton, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A grommet for use in an electrochemical button cell to electrically insulate an anode can from a cathode can of the button cell includes a generally tubular sidewall and a plurality of projections. The generally tubular sidewall has an upper portion and a lower portion extending around a longitudinal axis. The upper portion tapers outwardly and upwardly away from the lower portion. The ...