ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,498, issued on April 22, was assigned to INVENTIO AG (Hergiswil, Switzerland).

"Sliding door" was invented by Jonas Vonaesch (Lucerne, Switzerland) and Florian Trosch (Erlenbach ZH, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sliding door includes a bar that is movable in the closing and opening direction of a door leaf the sliding door. When the sliding door is in a closed state, the door separates a first space from a second space. A door frame in which the door is mounted has a bar catch, wherein the bar engages in the bar catch when the door leaf is in the closed state. The engagement can be released by movement of the door leaf,...