ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,488, issued on March 18, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).
"Gas sensor" was invented by Soichiro Yoshida (Nagoya, Japan) and Kunihiko Nakagaki (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas sensor includes a laminated body constituted by at least two ceramic layers laminated thereon, and having at least one gas introduction port, and at least one internal vacancy, and an outer side electrode formed on the laminated body, and provided in order to discharge oxygen from the internal vacancy, wherein a slit portion connected to an external space, and which is formed in the laminated body in covering relation to t...