ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,643, issued on Feb. 24, was assigned to Pollux Technologies (East Brunswick, N.J.).

"IoT enabled smart filter device" was invented by Sid Chaudhuri (East Brunswick, N.J.), Robert Reid (Browns Mills, N.J.) and Gavin Edward Trutzenbach (Browns Mills, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a smart air filter blockage detection and alert communication system for use with filters in air circulation systems such as HVAC, vehicles, server systems, and dryers. The system attached to the frame of a filter comprises a light source, a light sensor, two actuators and a control unit. The control unit based on a stored ...