ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,718,186, issued on Aug. 25, was assigned to Teleme Trak Inc. (Oakland, Calif.).

"Shipping container tracking methods" was invented by Frederick Steinway Ziegler (San Francisco) and Mats Alakula (Lund, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "The devices and methods described herein are utilized to continuously track unpowered logistics platforms such as semi-trailers and intermodal shipping containers. In some examples, a tracking device harvests the kinetic energy of oscillatory movements of the shipping container to power the tracking device. In some instances, the shipping container is moving on a roadway, railway, or waterway. In other ...