ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,507,198, issued on Dec. 23, was assigned to Boost SubscriberCo LLC (Englewood, Colo.).

"Location determination cellular system" was invented by Mehdi Alasti (Englewood, Colo.), Kazi Bashir (Englewood, Colo.) and Siddhartha Chenumolu (Englewood, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A location of a mobile phone in a cellular network is determined when the mobile phone has been turned off, placed in airplane mode, inactive mode or in idle mode. A first cell of interest and times of interest is received, and a location determination server in communication with the cellular network requests call data records (CDRs) associated with the first ...