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: 158 251 954 patent documents

This week's update (30/08/2024 12:00 CET):

170 720 new documents added

1 828 765 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 0322864 B1 19920311 - SHAFT FOR USE WITH CORE

Title (en)

SHAFT FOR USE WITH CORE

Publication

EP 0322864 B1 19920311 (EN)

Application

EP 88121729 A 19881227

Priority

JP 33520587 A 19871228
JP 33520687 A 19871228

Abstract (en)

[origin: EP0322864A1] A core shaft comprising a shaft body (2), a pair of opposite journals (3, 4), an elastic tube (5) helically wound around the shaft body (2), inflatable by the pressure of a fluid introduced thereinto and holdable in its inflated state, and a tubular protective cover (6) covering the entire helical winding of the tube and variable in diameter with the inflation or contraction of the tube.

IPC 1-7

B65H 75/24

IPC 8 full level

B65H 75/24 (2006.01)

CPC (source: EP US)

B65H 75/2437 (2021.05 - EP US)

Designated contracting state (EPC)

BE DE FR GB IT

DOCDB simple family (publication)

EP 0322864 A1 19890705; EP 0322864 B1 19920311; DE 3869100 D1 19920416

DOCDB simple family (application)

EP 88121729 A 19881227; DE 3869100 T 19881227