Spark plug with specific electrode material

Details Spark plug with specific electrode material Spark plug with specific electrode material

2005-12-28

2008-11-11

Macchiarolo, Peter (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

C123S1690EL

Reexamination Certificate

active

07449823

ABSTRACT:
An electrode material based on an alloy or mixed compound, the alloy or mixed compound containing at least two of the elements platinum, palladium, iridium, rhenium, rhodium or ruthenium and, in addition, at least one oxide of the elements zirconium, hafnium, yttrium or magnesium.

REFERENCES:
patent: 4743793 (1988-05-01), Toya et al.
patent: 4795944 (1989-01-01), Stimson
patent: 5456624 (1995-10-01), Moore et al.
patent: 5990602 (1999-11-01), Katoh et al.
patent: 6019077 (2000-02-01), Gorokhovsky
patent: 6412465 (2002-07-01), Lykowski et al.
patent: 6664719 (2003-12-01), Matsutani et al.
patent: 2006/0043856 (2006-03-01), Matsutani et al.

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