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Current content: 156 632 791 patent documents

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121 162 new documents added

981 197 documents amended

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EP 0944940 A1 19990929 - SPARK PLUG

Title (en)

SPARK PLUG

Title (de)

ZÜNDKERZE

Title (fr)

BOUGIE

Publication

EP 0944940 A1 19990929 (DE)

Application

EP 97947010 A 19971018

Priority

DE 9702407 W 19971018
DE 19651454 A 19961211

Abstract (en)

[origin: DE19651454A1] This invention concerns a spark plug with an electrode connected to an ignition line by means of a connecting pin and a resistor positioned between the electrode and the ignition line which is characterized by the fact that the resistor (5) can withstand high temperatures.

IPC 1-7

H01T 13/34

IPC 8 full level

H01T 13/20 (2006.01); H01T 13/34 (2006.01)

CPC (source: EP US)

H01T 13/34 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

DE 19651454 A1 19980625; DE 19651454 C2 20020411; BR 9714389 A 20000516; EP 0944940 A1 19990929; JP 2001505712 A 20010424; US 6455988 B1 20020924; WO 9826481 A1 19980618

DOCDB simple family (application)

DE 19651454 A 19961211; BR 9714389 A 19971018; DE 9702407 W 19971018; EP 97947010 A 19971018; JP 52607198 A 19971018; US 31956499 A 19991029