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 0080331 A3 19830720 - WINDING MACHINE

Title (en)

WINDING MACHINE

Publication

EP 0080331 A3 19830720 (EN)

Application

EP 82306150 A 19821118

Priority

ZA 818054 A 19811120

Abstract (en)

[origin: EP0080331A2] A machine (10) for winding a metal band helically on to a cylinder includes a winding machine (12) and a corrugating machine (14). The winding machine (12) has spindles (16, 18) and a cylinder (22). Guide prongs (36, 38) guide a metal band on a tube 22 for forming a helix. A welding gun (39) welds the sides of the helix as it is formed.

IPC 1-7

B21C 37/12

IPC 8 full level

B21C 37/12 (2006.01); B21D 5/10 (2006.01); B21D 7/00 (2006.01)

CPC (source: EP)

B21C 37/12 (2013.01)

Citation (search report)

US 2600630 A 19520617 - BOSCAWEN FERGUSSON HUGH
FR 2481619 A1 19811106 - PROV & VERKTYG AB [SE]
US 1570117 A 19260119 - ZIMMERMANN HANS J
US 3606783 A 19710921 - LEWIS CLARENCE P

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0080331 A2 19830601; EP 0080331 A3 19830720; AU 9075782 A 19830526; JP S58132319 A 19830806

DOCDB simple family (application)

EP 82306150 A 19821118; AU 9075782 A 19821119; JP 20352382 A 19821119