Plate-like alumina heater
AssigneeNGK Spark Plug So., Ltd.
InventorsTakao Kojima, Nobuhiro Hayakawa, Yutaka Nakayama, Tetsusyo Yamada
Life of this patent
Estimating the term…
Abstract
A heater comprising a sheet substrate formed of alumina and an electron-conductive pattern provided thereon and designed to generate heat, in which at least a portion of the electron-conductive pattern is provided thereon with an oxygen ion-conductive layer.
Claims8
A heater comprising a sheet substrate formed of alumina having an electron-conductive pattern formed on a surface of the substrate and designed to generate heat, wherein at least a portion of said electron-conductive pattern is provided with an oxygen ion conductive layer on at least one side of said electron-conductive pattern, wherein at least 90% by weight of the oxygen ion-conductive layer consists of partially and/or entirely stabilized ZrO.sub.2.
Dependencies are inferred from the claim text.