Heater backed with a ceramic substrate
AssigneeNgk Spark Plug Co., Ltd.
InventorsTakao Kojima, Hiroyuki Ishiguro
Life of this patent
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Abstract
A heater backed with a ceramic substrate having a ceramic substrate as a base plate and heating element formed thereon, which comprises a conductor for retaining ionized elements, said conductor branching from a terminal lead portion of the minus side connected to the heater element under an applied electric current and extending at the back side of the base plate, along the heating element pattern at least partly thereof. A protecting layer may be provided on the surface of said conductor. The conductor is connected with the lead portion through a conducting through hole.
Claims5
A heater backed with a ceramic substrate having a ceramic substrate as a base plate and heating element formed thereon, which comprises a conductor for retaining ionized elements, said conductor branching from a terminal lead portion of the minus side connected to the heater element under an applied electric current and extending at the back side of the base plate, along the heating element pattern at least partly thereof.
Dependencies are inferred from the claim text.