US Patent:
20070245803, Oct 25, 2007
Inventors:
Siong Tan - Chino CA, US
Chen-Shing Chang - Pingjhen City, TW
International Classification:
G01N 7/00
Abstract:
An exhaust gas sensor comprises a planar sensing element, which comprises a ceramic heater, a solid electrolyte electrochemical cell, and a protection layer for the sensing electrode and electrode leads. The protection layer comprises built-in arrays of porous vias.