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 0083571 B1 19860416 - METHOD OF REDUCING CORROSION OF ALUMINIUM COMPONENTS

Title (en)

METHOD OF REDUCING CORROSION OF ALUMINIUM COMPONENTS

Publication

EP 0083571 B1 19860416 (EN)

Application

EP 83300018 A 19830105

Priority

GB 8200291 A 19820106

Abstract (en)

[origin: EP0083571A1] The corrosion of aluminum components in contact with circulating water, e.g. in radiators of heating systems, is reduced by providing a surface film of finely divided magnetite (Fe3O4). This may be achieved by introducing colloidal magnetite into the circulating water, preferably in conjunction with a surface active agent and a supplementary inhibitor to reduce galvanic corrosion in the presence of copper or brass.

IPC 1-7

C23F 15/00; C23F 11/18

IPC 8 full level

C23F 11/18 (2006.01)

CPC (source: EP)

C23F 11/18 (2013.01)

Designated contracting state (EPC)

BE DE FR IT NL

DOCDB simple family (publication)

EP 0083571 A1 19830713; EP 0083571 B1 19860416; DE 3362966 D1 19860522; GB 2114113 A 19830817; GB 2114113 B 19850109; GB 8300120 D0 19830209

DOCDB simple family (application)

EP 83300018 A 19830105; DE 3362966 T 19830105; GB 8300120 A 19830105