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: 157 484 516 patent documents

This week's update (26/07/2024 12:00 CET):

147 225 new documents added

921 612 documents amended

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EP 0997056 A1 20000503 - LOUDSPEAKERS

Title (en)

LOUDSPEAKERS

Title (de)

LAUTSPRECHER

Title (fr)

HAUT-PARLEURS

Publication

EP 0997056 A1 20000503 (EN)

Application

EP 98932273 A 19980617

Priority

GB 9801765 W 19980617
GB 9712964 A 19970619

Abstract (en)

[origin: WO9858520A1] A tweeter has its voice coil former and diaphragm integrally formed as a single unit. The magnet, pole piece and plate are encapsulated as a complete magnetic circuit in an injection moulded casing. A robust, inexpensive and easy to manufacture product is achieved.

IPC 1-7

H04R 9/04; H04R 31/00

IPC 8 full level

H04R 9/04 (2006.01); H04R 31/00 (2006.01)

CPC (source: EP)

H04R 9/045 (2013.01); H04R 31/003 (2013.01); H04R 31/006 (2013.01)

Citation (search report)

See references of WO 9858520A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 9858520 A1 19981223; EP 0997056 A1 20000503; GB 9712964 D0 19970827

DOCDB simple family (application)

GB 9801765 W 19980617; EP 98932273 A 19980617; GB 9712964 A 19970619