ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,859, issued on Feb. 17, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).
"Gas sensor and control method of gas sensor" was invented by Yusuke Watanabe (Nagoya, Japan) and Daichi Ichikawa (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas sensor includes a sensor element and a control unit for controlling the sensor element. The sensor element includes a main pump cell, an auxiliary pump cell, a measurement pump cell, and a reference electrode, wherein, in the main pump cell, a repeatedly on-off controlled main pump current is applied so that an auxiliary pump current flowing through the auxiliary pump cell is at a predetermined ...