ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,473, issued on March 24, was assigned to The Boeing Co. (Arlington, Va.).

"System and method to build a flyable holding pattern entry trajectory when the available space is limited" was invented by Salvador Ramirez Blanco (Madrid), Daniel Miguel Hernandez (Madrid), Carlos Querejeta Masaveu (Madrid) and Sergio Villanueva Melero (Madrid).

According to the abstract* released by the U.S. Patent & Trademark Office: "A technique for building a modified entry trajectory profile for an aircraft to join a holding pattern at an entry waypoint despite the airspace available to build the entry trajectory being limited. In one aspect, instructions are received for an aircraft to join a holdi...