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: 155 263 406 patent documents

This week's update (19/04/2024 12:00 CET):

215 613 new documents added

1 342 057 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 1012637 A1 20000628 - IMPROVED TELESCOPE

Title (en)

IMPROVED TELESCOPE

Title (de)

VERBESSERTES TELESKOP

Title (fr)

TELESCOPE PERFECTIONNE

Publication

EP 1012637 A1 20000628 (FR)

Application

EP 97902413 A 19970131

Priority

FR 9700189 W 19970131
FR 9601132 A 19960131
FR 9603027 A 19960311

Abstract (en)

[origin: WO9728469A1] A telescope comprising a membrane mirror (6) and a control membrane (7) of which the edges are free while the central areas are joined together. The telescope further comprises an auxiliary folding membrane (8) and a curvature analyser (10) providing sagittal scanning and having a single screen (23)

IPC 1-7

G02B 5/10; G02B 26/06; G02B 26/08; G02B 23/06; H01Q 15/16

IPC 8 full level

G02B 26/08 (2006.01)

CPC (source: EP US)

G02B 26/0825 (2013.01 - EP US)

Citation (search report)

See references of WO 9728469A1

Designated contracting state (EPC)

CH DE FR GB LI

DOCDB simple family (publication)

WO 9728469 A1 19970807; EP 1012637 A1 20000628; US 6676262 B1 20040113

DOCDB simple family (application)

FR 9700189 W 19970131; EP 97902413 A 19970131; US 11719499 A 19990122