ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,192, issued on Oct. 14, was assigned to NIVALIS ENERGY SYSTEMS LLC (Hunt Valley, Md.).

"Battery system for transport refrigeration units and supplemental battery system" was invented by Ryan Kemmet (Phoenix) and Dennis Townsend (Hunt Valley, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for powering a transport refrigeration unit (TRU) via one or more batteries when not connected to shore power are disclosed. The system may include one or more batteries configured to supply a DC battery voltage, an inverter/charger coupled to the one or more batteries and configured to convert the DC battery voltage to an AC output voltage f...