ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,231, issued on Dec. 30, was assigned to BUNDESREPUBLIK DEUTSCHLAND, VERTRETEN DURCH DAS BUNDESMINISTERIUM FUR WIRTSCH (Braunschweig, Germany).

"Ion surface trap, and method for operating an ion surface trap" was invented by Sebastian Raupach (Braunschweig, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an ion surface trap (10) with (a) an electrode pair (12) that comprises a first trap electrode (14.1) and a second trap electrode (14.2) and is configured to form a trap volume for at least one ion (22) when an electrical AC voltage is applied, (b) at least two AC voltage electrodes (16) arranged to close the trap volu...