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: 157 337 350 patent documents

This week's update (19/07/2024 12:00 CET):

219 431 new documents added

1 247 852 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 0211689 A2 19870225 - Determination of metal source in used oil.

Title (en)

Determination of metal source in used oil.

Title (de)

Feststellung eines Metallursprungs in einem Altöl.

Title (fr)

Détermination de l'origine d'un métal dans une huile usée.

Publication

EP 0211689 A2 19870225 (EN)

Application

EP 86306424 A 19860819

Priority

US 8700211 W 19870130
US 76774485 A 19850821

Abstract (en)

A tracer metal, which is not present in engine parts subject to wear, is used to ascertain the source of metals in used oil as between lubricating oil additives and other sources, particularly wear of engine parts.

IPC 1-7

C10M 177/00

IPC 8 full level

C10M 177/00 (2006.01)

CPC (source: EP)

C10M 177/00 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0211689 A2 19870225; EP 0211689 A3 19871209; EP 0211689 B1 19900627

DOCDB simple family (application)

EP 86306424 A 19860819