Global Patent Index - EP 0400950 B1

EP 0400950 B1 20000209 - Spark plug

Title (en)

Spark plug

Title (de)

Zündkerze

Title (fr)

Bougie d'allumage

Publication

EP 0400950 B1 (EN)

Application

EP 90305797 A

Priority

JP 13276089 A

Abstract (en)

[origin: EP0400950A1] In a spark plug for an internal combustion engine, a center electrode has a firing tip at its front end. The firing tip is made from iridium powder compact which is degreased, and sintered in a condition such as a vacuum, or inert atmosphere, so that the density of the powder compact is more than 90 percent to impart a spark-corrosion resistant property.

IPC 1-7

H01T 21/02; H01T 13/39

IPC 8 full level

H01T 13/39 (2006.01); H01T 21/02 (2006.01)

CPC (source: EP)

H01T 13/39 (2013.01); H01T 21/02 (2013.01)

Citation (examination)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0400950 A1 19901205; EP 0400950 B1 20000209; DE 69033451 D1 20000316; DE 69033451 T2 20000608; JP H031475 A 19910108; JP H07109783 B2 19951122

DOCDB simple family (application)

EP 90305797 A 19900529; DE 69033451 T 19900529; JP 13276089 A 19890529