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: 159 515 718 patent documents

This week's update (01/11/2024 12:00 CET):

154 531 new documents added

1 078 520 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 0219783 B1 19920422 - HAIR ROLLERS

Title (en)

HAIR ROLLERS

Publication

EP 0219783 B1 19920422 (DE)

Application

EP 86114119 A 19861011

Priority

DE 3537374 A 19851021
DE 3544275 A 19851214
DE 8535210 U 19851214

Abstract (en)

[origin: US4856542A] A radially expandable hair curler comprising a generally cylindrical hollow body, a detachable holding strap stretching from one longitudinal end of the body to the other, and internal mechanical device for expanding and contracting the curler body.

IPC 1-7

A45D 2/24

IPC 8 full level

A45D 2/24 (2006.01)

CPC (source: EP US)

A45D 2/24 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0219783 A2 19870429; EP 0219783 A3 19881012; EP 0219783 B1 19920422; DE 3544275 A1 19870423; DE 8535210 U1 19870115; US 4856542 A 19890815; US 5020552 A 19910604

DOCDB simple family (application)

EP 86114119 A 19861011; DE 3544275 A 19851214; DE 8535210 U 19851214; US 38093589 A 19890717; US 92165386 A 19861021