ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,811, issued on March 25, was assigned to UNIFOR S.P.A. (Turate, Italy).
"Door with magnetic seal" was invented by Leonardo De Vita (Turate, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a door with a magnetic sealing mechanism. The door leaf houses a sliding element (guillotine) made from a material with low magnetic interaction. This guillotine has two magnets: the first keeps the guillotine retracted within its seat, while the second, when near a magnet interaction element on the door frame, pulls the guillotine out to create a tight seal when the door is closed. The second magnet's pull is stronger than the first, ensu...