Metal working – Barrier layer or semiconductor device making – Barrier layer device making
Patent
1978-12-08
1981-04-14
Demeo, Palmer C.
Metal working
Barrier layer or semiconductor device making
Barrier layer device making
313141, 313143, H01T 1334, H01T 1338
Patent
active
042610850
ABSTRACT:
An ignition plug insulator provided at its front end with a closed ignition portion. The closed front end of the ignition portion is impregnated with an electric conductivity imparting material to form a ceramic electrode. Alternatively, the ceramic electrode may be incorporated in the closed front end of the ignition portion or filled in an axial bore provided in the insulation.
REFERENCES:
patent: 2093848 (1937-09-01), Randolph et al.
patent: 2603200 (1952-07-01), Feichter
patent: 2803771 (1957-08-01), Moore
patent: 3037140 (1962-05-01), Schurecht
patent: 3365605 (1968-01-01), Linstedt
patent: 3872338 (1975-03-01), Wax
Nishio Kanemitsu
Takagi Shunichi
DeMeo Palmer C.
NGK Spark Plug Co. Ltd.
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