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: 158 081 232 patent documents

This week's update (23/08/2024 12:00 CET):

176 880 new documents added

1 259 676 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 0428488 A3 19910807 - GAS-EXPANSION THERMOSTAT PARTICULARLY DESIGNED FOR HOME ELECTRIC CONVECTORS

Title (en)

GAS-EXPANSION THERMOSTAT PARTICULARLY DESIGNED FOR HOME ELECTRIC CONVECTORS

Publication

EP 0428488 A3 19910807 (EN)

Application

EP 90830296 A 19900628

Priority

IT 2208489 U 19891113

Abstract (en)

[origin: EP0428488A2] A gas-expansion thermostat particularly designed for home electric convectors comprises a first gas-expansion membrane and at least a second gas-expansion membrane arranged in series and communicating with the first membrane.

IPC 1-7

H01H 37/40

IPC 8 full level

H01H 37/40 (2006.01)

CPC (source: EP)

H01H 37/40 (2013.01)

Citation (search report)

[X] US 2045289 A 19360623 - BOLIN CHARLES D
[A] DE 863563 C 19530119 - W EHRET FA DIPL ING
[A] FR 724241 A 19320423 - EISENWERK WILHELM PFAHL
[A] DE 2414813 B2 19760415

Designated contracting state (EPC)

AT CH DE ES FR GB GR LI SE

DOCDB simple family (publication)

EP 0428488 A2 19910522; EP 0428488 A3 19910807; IT 218834 Z2 19921105; IT 8922084 U1 19910513; IT 8922084 V0 19891113

DOCDB simple family (application)

EP 90830296 A 19900628; IT 2208489 U 19891113