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: 157 117 910 patent documents

This week's update (12/07/2024 12:00 CET):

139 301 new documents added

1 340 825 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 1022470 B1 20041013 - Radial fan

Title (en)

Radial fan

Title (de)

Radialgebläse

Title (fr)

Soufflante radial

Publication

EP 1022470 B1 20041013 (DE)

Application

EP 99100937 A 19990120

Priority

EP 99100937 A 19990120

Abstract (en)

[origin: EP1022470A1] The fan has two induction cavities, the first (A1) of which has an induction aperture (28), The induction aperture has an injector wall (20) extending into the first induction cavity to act as a feed injector. It is in the form of an annular wall, part annular wall or spoiler wall. and improves the achievable static pressure, working pressure and output.

IPC 1-7

F04D 29/42; F04D 25/16

IPC 8 full level

F04D 25/16 (2006.01); F04D 29/42 (2006.01)

CPC (source: EP)

F04D 17/04 (2013.01); F04D 17/16 (2013.01); F04D 25/166 (2013.01); F04D 29/4213 (2013.01)

Designated contracting state (EPC)

AT CH DE ES FR GB IT LI SE

DOCDB simple family (publication)

EP 1022470 A1 20000726; EP 1022470 B1 20041013; AT E279653 T1 20041015; DE 59910827 D1 20041118

DOCDB simple family (application)

EP 99100937 A 19990120; AT 99100937 T 19990120; DE 59910827 T 19990120