ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,746, issued on Feb. 10, was assigned to Ekidna Sensing Inc. (Ottawa).

"Systems and devices for estimating substance concentration" was invented by Apostolos Marinakos (Ottawa), Nicholas Boileau (Ottawa), Steven Price-Williams (St-Lazare, Canada), Jacob Watkins (Ottawa), Nicole Rice (Ottawa), Ben Cohen-Kleinstein (Vaughan, Canada), Oliver Aramini (Fergus, Canada), Artem Sotnikov (Toronto), Samuel Roberge-Arnott (Navan, Canada) and Labros Spandonidis (Markham, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for determining a concentration of a substance in a sample. In one embodiment, the system uses a device that cooperates ...