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: 155 263 406 patent documents

This week's update (19/04/2024 12:00 CET):

215 613 new documents added

1 342 057 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 1264511 A1 20021211 - FLAT-PANEL LOUDSPEAKER

Title (en)

FLAT-PANEL LOUDSPEAKER

Title (de)

PLATTENLAUTSPRECHER

Title (fr)

HAUT-PARLEUR A MEMBRANE

Publication

EP 1264511 A1 20021211 (DE)

Application

EP 01271809 A 20010126

Priority

EP 0100858 W 20010126

Abstract (en)

[origin: WO02060218A1] The invention relates to a flat-panel loudspeaker comprising a lightweight panel (1), a retaining element for holding the panel and at least one driver that is connected to the panel in an oscillatory manner to generate mechanical oscillations in accordance with electric control signals. According to the invention, the panel is configured with at least a one-dimensionally curved shape.

IPC 1-7

H04R 7/04

IPC 8 full level

H04R 7/04 (2006.01); H04R 7/12 (2006.01)

CPC (source: EP)

H04R 7/04 (2013.01); H04R 7/045 (2013.01); H04R 7/12 (2013.01)

Citation (search report)

See references of WO 02060218A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 02060218 A1 20020801; EP 1264511 A1 20021211

DOCDB simple family (application)

EP 0100858 W 20010126; EP 01271809 A 20010126