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: 156 978 933 patent documents

This week's update (05/07/2024 12:00 CET):

169 914 new documents added

2 331 667 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 0789858 A4 19990324 - ELECTROCHROMIC DEVICES AND METHODS OF PREPARATION

Title (en)

ELECTROCHROMIC DEVICES AND METHODS OF PREPARATION

Title (de)

ELEKTROCHROME VORRICHTUNGEN UND VERFAHREN ZU IHRER HERSTELLUNG

Title (fr)

DISPOSITIFS ELECTROCHROMIQUES ET PROCEDE DE PREPARATION DESDITS DISPOSITIFS

Publication

EP 0789858 A4 19990324 (EN)

Application

EP 95940538 A 19951025

Priority

US 9513676 W 19951025
US 32950294 A 19941026
US 33009094 A 19941026
US 54757895 A 19951024

IPC 1-7

G02F 1/15; G02F 1/153

IPC 8 full level

G02F 1/15 (2006.01); G02F 1/153 (2006.01)

Citation (search report)

[XY] WO 9322707 A1 19931111 - UNIV CALIFORNIA [US]
[Y] EP 0221793 A1 19870513 - COMMISSARIAT ENERGIE ATOMIQUE [FR]
[E] WO 9530495 A1 19951116 - DONNELLY CORP [US]
[A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 557 (P - 1817) 24 October 1994 (1994-10-24)
See references of WO 9613754A1

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family (publication)

EP 0789858 A1 19970820; EP 0789858 A4 19990324

DOCDB simple family (application)

EP 95940538 A 19951025