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

GPI key values

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EP 0923808 A2 19990623 - ANALOG TO DIGITAL CONVERTER COMPRISING A SIGMA-DELTA MODULATOR

Title (en)

ANALOG TO DIGITAL CONVERTER COMPRISING A SIGMA-DELTA MODULATOR

Title (de)

ANALOG-DIGITAL-UMSETZER MIT SIGMA-DELTA-MODULATOR

Title (fr)

NUMERISEUR COMPRENANT UN MODULATEUR SIGMA-DELTA

Publication

EP 0923808 A2 19990623 (EN)

Application

EP 98905544 A 19980312

Priority

EP 98905544 A 19980312
EP 97201128 A 19970416
IB 9800321 W 19980312

IPC 1-7

H03M 3/02

IPC 8 full level

H03M 3/02 (2006.01)

CPC (source: EP)

H03M 3/432 (2013.01)

Citation (search report)

See references of WO 9847233A2

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0923808 A2 19990623; JP 2000512826 A 20000926

DOCDB simple family (application)

EP 98905544 A 19980312; JP 52931798 A 19980312