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: 159 679 824 patent documents

This week's update (08/11/2024 12:00 CET):

164 112 new documents added

576 445 documents amended

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EP 1350345 A1 20031008 - VIRTUAL LINE SWITCHED RING

Title (en)

VIRTUAL LINE SWITCHED RING

Title (de)

VIRTUELLER LEITUNGSGESCHALTETER RING

Title (fr)

RESEAU EN ANNEAU COMMUTE A LIGNE VIRTUELLE

Publication

EP 1350345 A1 20031008 (EN)

Application

EP 00973718 A 20001020

Priority

US 0029044 W 20001020

Abstract (en)

[origin: WO03063395A1] At least one protection line is shared among SONET rings. Identification and availability information of the shared protection line is distributed among the switches of the SONET rings using K-byte data in the SONET overhead.

IPC 1-7

H04J 3/08; H04L 12/46; H04L 12/437; H04J 3/14

IPC 8 full level

H04J 3/08 (2006.01)

CPC (source: EP)

H04J 3/085 (2013.01); H04Q 2213/13167 (2013.01); H04Q 2213/13174 (2013.01); H04Q 2213/13216 (2013.01); H04Q 2213/13367 (2013.01)

Citation (search report)

See references of WO 03063395A1

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 03063395 A1 20030731; CA 2356643 A1 20020420; CA 2356643 C 20090106; EP 1350345 A1 20031008

DOCDB simple family (application)

US 0029044 W 20001020; CA 2356643 A 20001020; EP 00973718 A 20001020