Temperature sensor element

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11131586
APP PUB NO 20180335348A1
SERIAL NO

15979830

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A resistance pattern that contains platinum as a main component is formed into a meander shape and on a main surface of a ceramic substrate. A protective film layer that covers the resistance pattern has a two-layer structure including a trap layer as an inner layer and an overcoat layer as an outer layer. The trap layer contains alumina as a main component and 2 to 30 vol % of platinum. The overcoat layer contains alumina as a main component. With such a configuration, even when reactivity of the platinum resistance pattern becomes higher under high temperature use, platinum contained in the trap layer reacts with oxygen or impurities etc. contained in the ceramic substrate. Thus, reaction of the platinum resistance pattern can be suppressed.

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Patent Owner(s)

  • KOA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miura, Katsuya Tokyo, JP 28 214
Shimodaira, Masahiro Tokyo, JP 2 0

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