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: 158 967 801 patent documents

This week's update (04/10/2024 12:00 CET):

150 730 new documents added

999 816 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 0111770 A1 19840627 - Copper alloy for welded tubes.

Title (en)

Copper alloy for welded tubes.

Title (de)

Kupferlegierung für geschweisste Röhren.

Title (fr)

Alliage à base de cuivre pour tubes soudés.

Publication

EP 0111770 A1 19840627 (EN)

Application

EP 83111619 A 19831121

Priority

JP 20456182 A 19821124

Abstract (en)

A copper-based alloy for welded tubes, containing 25 to 40% zinc, 0.005 to 0.070% phosphorus, 0.05 to 1.0% each tin and aluminum, all by weight, and the balance copper. Welded tubes made from this alloy have improved corrosion resistance and less sensitivity to weld cracking.

IPC 1-7

C22C 9/04

IPC 8 full level

C22C 9/00 (2006.01); B23K 35/30 (2006.01); C22C 9/04 (2006.01)

CPC (source: EP)

C22C 9/04 (2013.01)

Citation (search report)

[A] FR 2249173 A1 19750523 - WIELAND WERKE AG [DE]
[A] FR 894529 A 19441227
[A] FR 1512930 A 19680209 - OLIN MATHIESON

Designated contracting state (EPC)

DE FR NL SE

DOCDB simple family (publication)

EP 0111770 A1 19840627; EP 0111770 B1 19860226; DE 3362354 D1 19860403; JP S5996237 A 19840602; JP S6056775 B2 19851211

DOCDB simple family (application)

EP 83111619 A 19831121; DE 3362354 T 19831121; JP 20456182 A 19821124