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 0276623 A2 19880803 - Rotary compressors.

Title (en)

Rotary compressors.

Title (de)

Rotationsverdichter.

Title (fr)

Compresseurs rotatifs.

Publication

EP 0276623 A2 19880803 (EN)

Application

EP 87630230 A 19871105

Priority

IL 8141487 A 19870128
IL 8231887 A 19870423

Abstract (en)

A rotary compressor comprising a rotary power source, a crankshaft (34) driven by the rotary power source, a piston (54) formed with a dynamic clearance seal and a bellows (66) for sealing the working volume (58) surrounding the piston (54) from the volume (41) surrounding the crankshaft (34).

IPC 1-7

F04B 39/04

IPC 8 full level

F04B 39/00 (2006.01); F04B 39/04 (2006.01)

CPC (source: EP)

F04B 39/047 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0276623 A2 19880803; EP 0276623 A3 19890215; JP S6445979 A 19890220

DOCDB simple family (application)

EP 87630230 A 19871105; JP 29309487 A 19871119