US Patent Issued to Elliptic Laboratories ASA on July 14 for "Presence detection" (Norwegian Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,173, issued on July 14, was assigned to Elliptic Laboratories ASA (Oslo, Norway).

"Presence detection" was invented by Tom Oystein Kavli (Oslo, Norway), Espen Klovning (Strommen, Norway) and John Magne Helgesen Roe (Sorumsand, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a device and a method for presence detection in the vicinity of a device. The device including an acoustic receiver and corresponding analyzing unit for analyzing the received signals, and an acoustic transmitter, the transmitter and received being configured to operate within a predetermined acoustic frequency range. The method including th...