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

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 0116739 A3 19850502 - HYDRAULIC VALVE

Title (en)

HYDRAULIC VALVE

Publication

EP 0116739 A3 19850502 (EN)

Application

EP 83303677 A 19830624

Priority

GB 8219279 A 19820702

Abstract (en)

[origin: EP0116739A2] In a pilot-operated hydraulic valve, a non-return valve (7) in the valve inlet (25) is arranged to operate simultaneously as a variable-orifice flow sensor. By combining the non-return and flow-sensing functions in the non-return valve (7) a significant saving in space and weight is achieved.

IPC 1-7

F15B 13/043; F15B 11/02

IPC 8 full level

F15B 13/043 (2006.01)

CPC (source: EP)

F15B 13/043 (2013.01)

Citation (search report)

[X] EP 0002446 A1 19790627 - REXROTH MANNESMANN GMBH [DE]
[Y] GB 1174768 A 19691217 - DOWTY ELECTRICS LTD
[Y] US 4315436 A 19820216 - MCCABE GARRY-OWEN, et al

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0116739 A2 19840829; EP 0116739 A3 19850502; AU 1582983 A 19840105; JP S5923106 A 19840206

DOCDB simple family (application)

EP 83303677 A 19830624; AU 1582983 A 19830616; JP 11835983 A 19830701