Spark plug with marking layer composition

Details Spark plug with marking layer composition Spark plug with marking layer composition

2006-05-02

2006-05-02

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

C313S118000, C313S137000

Reexamination Certificate

active

07038363

ABSTRACT:
A spark plug comprising an insulator, on at least a part of a surface of the insulator being formed a marking layer and a glaze layer, wherein the marking layer is exposed on the surface of the insulator and has a composition as described herein.

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patent: 2002/0033659 (2002-03-01), Nishikawa et al.
patent: 2002/0041136 (2002-04-01), Nishikawa
patent: 2002/0067110 (2002-06-01), Nishikawa et al.
patent: 1 168 545 (2002-01-01), None
patent: 2001-39733 (2001-02-01), None
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patent: 2001-244043 (2001-09-01), None
patent: 2002-15833 (2002-01-01), None
patent: 2002-175865 (2002-06-01), None
European Search Report for EP 03 25 8224 dated Mar. 18, 2004.

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