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

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EP 3231983 B1 20200819 - PROCESS FOR THE TREATMENT AND RECYCLING OF DRILLING MUD

Title (en)

PROCESS FOR THE TREATMENT AND RECYCLING OF DRILLING MUD

Title (de)

VERFAHREN ZUR AUFBEREITUNG UND WIEDERVERWERTUNG VON BOHRSCHLAMM

Title (fr)

PROCÉDÉ DE TRAITEMENT ET DE RECYCLAGE DE BOUE DE FORAGE

Publication

EP 3231983 B1 20200819 (DE)

Application

EP 16164758 A 20160411

Priority

EP 16164758 A 20160411

IPC 8 full level

E21B 21/06 (2006.01)

CPC (source: EP US)

E21B 21/01 (2013.01 - EP US); E21B 21/06 (2013.01 - EP); E21B 21/062 (2013.01 - EP); E21B 21/065 (2013.01 - EP); E21B 21/066 (2013.01 - EP)

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 3231983 A1 20171018; EP 3231983 B1 20200819; DK 3231983 T3 20200921

DOCDB simple family (application)

EP 16164758 A 20160411; DK 16164758 T 20160411