ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,826, issued on Feb. 17, was assigned to Tyco Fire & Security GmbH (Neuhausen am Rheinfall, Switzerland).

"Multi-beam smoke detector" was invented by Siddhesh Nagale (Pune, India), Vicky Gaikwad (Pune, India) and Vinod Waghmare (Pune, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "Example implementations include a method and apparatus for operating a smoke detector, comprising a first beam emitter and a second beam emitter. The first beam emitter may be configured to: (i) radiate a first beam in a first direction toward a first reflecting element, and (ii) receive a first reflection of the first beam from the first reflecting element. The secon...