Patent ID: 6565812
Filing Date: 2003-05-20
Classification: G01N,Y10T

Abstract:
A gas sensor having a sensor element wherein a central electrode is passed through a coil serving as both a heater and an electrode and the coil and the central electrode are buried in a bead of a metal oxide semiconductor characterized in that the gas sensor has a base having at lest three leads and a concave, both end portions of said coil and one end portion of said central electrode are attached on said leads, said bead is held above said concave, said at least three leads are in plate form, said leads are made to penetrate, in parallel with each other, the base in essentially the same plane, and on the base a central lead of the three leads is bent towards the side opposite to the said concave and the leads on both sides of the central lead are bent in a direction opposite to the central lead.