Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing
Reexamination Certificate
2008-08-29
2010-10-19
Patel, Vip (Department: 2889)
Electric lamp and discharge devices
Spark plugs
Particular electrode structure or spacing
C313S118000
Reexamination Certificate
active
07816845
ABSTRACT:
An electrode for an ignition device is made from a conductive ceramic of the form Mn+1AXn, where M is a transition metal, A is a group IIIA or IVA element, and X is nitrogen, carbon, or both carbon and nitrogen. M may be transition metals selected from the group of Ti, Mb, Ta, V, Cr, Mo, Sc, Zr and Hf. A may be selected from a group consisting of Al, Ga, In, Tl, Si, Ge, Sn, Pb, P, As and S. The spark ignition device may include a spark plug having an insulator, conductive shell, center electrode and ground electrode where the conductive ceramic electrode is at least one of the center or ground electrodes.
Dickinson Wright PLLC
Federal Mogul Ignition Company
Patel Vip
Stearns Robert L.
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