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: 156 511 693 patent documents

This week's update (14/06/2024 12:00 CET):

200 241 new documents added

1 026 356 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 2623616 B1 20140910 - Expansion controlled autofrettage

Title (en)

Expansion controlled autofrettage

Title (de)

Autofrettage-Verfahren

Title (fr)

Procédé d'autofrettage

Publication

EP 2623616 B1 20140910 (DE)

Application

EP 12153851 A 20120203

Priority

EP 12153851 A 20120203

Abstract (en)

[origin: EP2623616A1] The method involves applying high pressure of 700 bar at interior (2) of a metal pipe (1). A plastic deformation of metal or of metal wall is occurred from the inner surface (3) of the metal pipe. The pressure is increased gradually during the plasticization treatment. The outer diameter of metal pipe is measured during plasticization treatment. The pressure increasing process is terminated while reaching critical outside diameter of metal pipe, and then pressure is reduced again.

IPC 8 full level

C21D 7/12 (2006.01)

CPC (source: EP)

C21D 7/12 (2013.01)

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 2623616 A1 20130807; EP 2623616 B1 20140910; PL 2623616 T3 20150227

DOCDB simple family (application)

EP 12153851 A 20120203; PL 12153851 T 20120203