GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 157 636 699 patent documents

This week's update (09/08/2024 12:00 CET):

43 606 new documents added

1 129 815 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0324627 A2 19890719 - Glow plug.

Title (en)

Glow plug.

Title (de)

Glühkerze.

Title (fr)

Bougie à incandescence.

Publication

EP 0324627 A2 19890719 (EN)

Application

EP 89300281 A 19890112

Priority

GB 8800807 A 19880114

Abstract (en)

Glow plug for engine starting is of the sheathed element self-limiting type and has a sheath (20) enclosing the heating and resistance coils (26,28) which has a reduced diameter or other discontinuity (32) in its wall in an intermediate zone at or adjacent to the interconnection (30) between the coils in order to delay or resist conductive dispersion of heat from the tip portion (22) of the sheath containing the heating element to the remainder thereof.

IPC 1-7

F23Q 7/00

IPC 8 full level

F23Q 7/00 (2006.01); F02B 1/04 (2006.01)

CPC (source: EP)

F23Q 7/001 (2013.01); F02B 1/04 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES FR GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0324627 A2 19890719; EP 0324627 A3 19900117; GB 2214568 A 19890906; GB 2214568 B 19910821; GB 8800807 D0 19880217

DOCDB simple family (application)

EP 89300281 A 19890112; GB 8800807 A 19880114