Radiant energy – Photocells; circuits and apparatus – Combined with diverse-type device
Reexamination Certificate
2006-04-04
2006-04-04
Porta, David (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Combined with diverse-type device
C313S118000, C123S406280, C123S435000
Reexamination Certificate
active
07022968
ABSTRACT:
An optical sensor provides information about the burn of the fuel mixture in the combustion chamber of an internal combustion engine as well as the timing and waveform of the spark that ignites the fuel mixture in the combustion chamber. The optical sensor can be implemented as a stand-alone device, or incorporated into a spark plug.
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Drury Robert
Hopper Peter J.
Lindorfer Philipp
Mian Michael
Ellis Suezu
National Semiconductor Corporation
Pickering Mark C.
Porta David
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