US Patent Issued to ORANGE on Sept. 9 for "Method for detecting the absence of a physical element in a geographical zone, and associated system" (French Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,458, issued on Sept. 9, was assigned to ORANGE (Issy les Moulineaux, France).

"Method for detecting the absence of a physical element in a geographical zone, and associated system" was invented by Francois-Xavier Lecarpentier (Chatillon, France), Dinh Thuy Phan Huy (Chatillon, France) and Guillaume Tardiveau (Chatillon, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for transmitting a message by ambient scattering. The method is implemented by a transmitting device in response to the transmitting device changing from a first state in which the transmitting device is deprived from illumination to a second state in which the transmitt...