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: 158 967 801 patent documents

This week's update (04/10/2024 12:00 CET):

150 730 new documents added

999 816 documents amended

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EP 2839888 A3 20151028 - Electroacoustic transducer

Title (en)

Electroacoustic transducer

Title (de)

Elektroakustischer Wandler

Title (fr)

Convertisseur électroacoustique

Publication

EP 2839888 A3 20151028 (DE)

Application

EP 14177004 A 20140715

Priority

DE 102013216380 A 20130819

IPC 8 full level

B06B 1/06 (2006.01); G10K 9/22 (2006.01)

CPC (source: EP)

B06B 1/0644 (2013.01); G10K 9/22 (2013.01)

Citation (search report)

[X] US 2010208553 A1 20100819 - MASSA DONALD PATRICK [US]
[X] US 2006043840 A1 20060302 - TESSIEN ROSS A [US], et al
[A] US 4065687 A 19771227 - MISHIRO SHOJI
[AD] US 8085621 B2 20111227 - MASSA DONALD PATRICK [US]

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2839888 A2 20150225; EP 2839888 A3 20151028; DE 102013216380 A1 20150312

DOCDB simple family (application)

EP 14177004 A 20140715; DE 102013216380 A 20130819