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: 157 484 516 patent documents

This week's update (26/07/2024 12:00 CET):

147 225 new documents added

921 612 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 3290801 B1 20200812 - METHOD FOR CONTROLLING A FUEL/AIR RATIO IN A HEATING SYSTEM AND A CONTROL UNIT AND A HEATING SYSTEM

Title (en)

METHOD FOR CONTROLLING A FUEL/AIR RATIO IN A HEATING SYSTEM AND A CONTROL UNIT AND A HEATING SYSTEM

Title (de)

VERFAHREN ZUR KONTROLLE EINES BRENNSTOFF-LUFT-VERHÄLTNISSES IN EINEM HEIZSYSTEM SOWIE EINE STEUEREINHEIT UND EIN HEIZSYSTEM

Title (fr)

PROCÉDÉ DE COMMANDE D'UN RAPPORT AIR-COMBUSTIBLE DANS UN SYSTÈME DE CHAUFFAGE ET UNITÉ DE COMMANDE ET SYSTÈME DE CHAUFFAGE

Publication

EP 3290801 B1 20200812 (DE)

Application

EP 17187664 A 20170824

Priority

DE 102016216630 A 20160902
DE 102016216613 A 20160902
DE 102016216625 A 20160902
DE 102017204009 A 20170310

IPC 8 full level

F23N 5/12 (2006.01)

CPC (source: EP)

F23N 5/123 (2013.01); F23N 2227/20 (2020.01); F23N 2233/08 (2020.01)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3290801 A1 20180307; EP 3290801 B1 20200812

DOCDB simple family (application)

EP 17187664 A 20170824