ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,308, issued on Feb. 17, was assigned to Microsoft Technology Licensing LLC (Redmond, Wash.).

"Adaptive threshold for user absence prediction for power state transitions" was invented by Aobo Guan (Redmond, Wash.), Rachita Gupta (Seattle), Henry Minseok Kwak (Redmond, Wash.), Drew Cross (Bothell, Wash.), Jonathan Bret Barkelew (Seattle) and Jacob Smith (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for implementing an adaptive threshold for user absence prediction for power state transitions. A controller of a device monitors a user presence and/or absence of a user, in some cases, correlated with time, and d...