ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,549, issued on June 30, was assigned to Cirrus Logic Inc. (Austin, Texas).

"Electrochemical cell characterisation" was invented by John P. Lesso (Edinburgh, Great Britain), Toru Ido (Tokyo) and Yanto Suryono (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Circuitry for determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising: drive circuitry configured to apply a stimulus to the electrochemical cell, the stimulus having a stimulation frequency and a stimulation amplitude; and measurement circuitry configured to: sample an output of the electrochemical cell at a...