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: 157 337 350 patent documents

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219 431 new documents added

1 247 852 documents amended

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EP 1108323 A1 20010620 - METER PULSE FILTERING CIRCUIT FOR ANALOG MODEMS

Title (en)

METER PULSE FILTERING CIRCUIT FOR ANALOG MODEMS

Title (de)

GEBÜHRENIMPULS-FILTERSCHALTUNG FÜR ANALOGE MODEMS

Title (fr)

CIRCUIT DE FILTRAGE D'UNE IMPULSION DE TAXATION DESTINE A DES MODEMS ANALOGIQUES

Publication

EP 1108323 A1 20010620 (DE)

Application

EP 99952271 A 19990802

Priority

DE 9902413 W 19990802
DE 19838567 A 19980825

Abstract (en)

[origin: WO0011860A1] The invention relates to a filtering circuit for extracting the meter pulse of analog telephone communications. Said circuit which is mainly composed of resistors and capacitors is designed as a double T element or a Wien bridge circuit.

IPC 1-7

H04M 15/28

IPC 8 full level

H04M 15/28 (2006.01)

CPC (source: EP US)

H04M 15/28 (2013.01 - EP US)

Citation (search report)

See references of WO 0011860A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 0011860 A1 20000302; EP 1108323 A1 20010620; US 2001019607 A1 20010906; US 6842517 B2 20050111

DOCDB simple family (application)

DE 9902413 W 19990802; EP 99952271 A 19990802; US 79379001 A 20010226