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

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EP 0875126 A4 20030507 - SURROUND SOUND PROCESSOR WITH IMPROVED CONTROL VOLTAGE GENERATOR

Title (en)

SURROUND SOUND PROCESSOR WITH IMPROVED CONTROL VOLTAGE GENERATOR

Title (de)

RECHNER FÜR UMGEBUNGSTON MIT VERBESSERTEM ERZEUGER FÜR STEUERUNGSSPANNUNG

Title (fr)

PROCESSEUR D'AMBIOPHONIE COMPORTANT UN GENERATEUR AMELIORE DE TENSION DE COMMANDE

Publication

EP 0875126 A4 20030507 (EN)

Application

EP 95944242 A 19951221

Priority

US 9516897 W 19951221

IPC 1-7

H04R 5/00; H04S 3/00; H04S 3/02

IPC 8 full level

H04S 3/02 (2006.01); H04R 5/00 (2006.01); H04S 3/00 (2006.01); H04S 5/02 (2006.01)

Citation (search report)

[A] US 5295189 A 19940315 - FOSGATE JAMES W [US]
[A] US 4941177 A 19900710 - MANDELL DOUGLAS E [US], et al
See references of WO 9724012A1

Designated contracting state (EPC)

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

DOCDB simple family (publication)

AT E281053 T1 20041115; DE 69533706 D1 20041202; DE 69533706 T2 20050414; EP 0875126 A1 19981104; EP 0875126 A4 20030507; EP 0875126 B1 20041027; JP 2000502850 A 20000307; JP 3588624 B2 20041117

DOCDB simple family (application)

AT 95944242 T 19951221; DE 69533706 T 19951221; EP 95944242 A 19951221; JP 52359597 A 19951221