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: 159 515 718 patent documents

This week's update (01/11/2024 12:00 CET):

154 531 new documents added

1 078 520 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 0916808 A2 19990519 - Turbine

Title (en)

Turbine

Title (de)

Turbine

Title (fr)

Turbine

Publication

EP 0916808 A2 19990519 (EN)

Application

EP 98308747 A 19981026

Priority

GB 9723268 A 19971105

Abstract (en)

A turbine (10) for a gas turbine engine includes an annular array of turbine aerofoil blades (12) which are mounted on a disc (19). Each of the aerofoil blades (12) is provided with a radially inner platform (21) . Each platform (21) includes a passage (37) into which leaked cooling air flows. The passages (37) are disposed in a direction having a circumferential component so that cooling air is exhausted from them in a direction that is generally opposite to that in which the disc (19) operationally rotates. <IMAGE>

IPC 1-7

F01D 5/08

IPC 8 full level

F01D 5/08 (2006.01)

CPC (source: EP)

F01D 5/082 (2013.01); F01D 5/085 (2013.01); F05D 2240/81 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0916808 A2 19990519; EP 0916808 A3 20000112; EP 0916808 B1 20030312; DE 69812044 D1 20030417; DE 69812044 T2 20030821; GB 9723268 D0 19980107

DOCDB simple family (application)

EP 98308747 A 19981026; DE 69812044 T 19981026; GB 9723268 A 19971105