ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,426,858, issued on Sept. 30, was assigned to Apple Inc. (Cupertino, Calif.).

"In-bed temperature array for menstrual cycle tracking" was invented by James C. Clements (Campbell, Calif.), Erno H. Klaassen (Los Altos, Calif.), Habib S. Karaki (Sunnyvale, Calif.), Joseph M. Schmitt (Santa Clara, Calif.) and Zijing Zeng (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments are directed to systems and techniques for tracking menstrual cycles, which can include receiving temperature measurements from an array of temperature sensors positioned on a bed. A use period for the array can be determined when temperature measurements from at l...