ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,630, issued on May 20, was assigned to Quest Integrity USA LLC (Stafford, Texas).
"Indoor positioning and navigation systems and methods" was invented by Phillip D. Bondurant (Kent, Wash.) and Giovanni Nino (Kent, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Indoors positioning and navigation systems and methods are described herein. In one embodiment, a system for inspecting or maintaining a storage tank includes a vehicle having: at least one sensor for determining properties of a storage tank and a navigation system. The navigation system includes an acoustic transmitter carried by the vehicle and an inertial measurement unit (IMU) sensor...