ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,543, issued on March 18, was assigned to Amazon Technologies Inc. (Seattle).
"Plug-in energy sensor" was invented by Cameron Dean Whitehouse (Seattle), Matthew Liang Chaboud (San Francisco), Joseph A. Cullen (Issaquah, Wash.) and Arielle Rachel Bertman (Seattle).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described implementations monitor potential voltage at a location to determine device usage at the location. The implementations utilize a plug-in energy sensor that is plugged directly into any electrical outlet at the location and measures deviation in voltage at the location. Once plugged into an electrical outlet, the plug-in energy sensor m...