H - Electricity
01
T
H01T 13/38 (2006.01)
Patent
CA 2339390
The present invention provides a spark plug having a glaze layer 2d on the insulator 2 thereof, wherein the glaze layer 2d has a reduced Pb content, is capable of being fired at a relatively low temperature, exhibits excellent insulation properties, and can have a smooth surface.
Nishikawa Kenichi
Sugimoto Makoto
Ngk Spark Plug Co. Ltd.
Riches Mckenzie & Herbert Llp
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