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: 159 679 824 patent documents

This week's update (08/11/2024 12:00 CET):

164 112 new documents added

576 445 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 0279022 B1 19910911 - PROCESS AND INSTALLATION FOR PULPING PAPER STOCK

Title (en)

PROCESS AND INSTALLATION FOR PULPING PAPER STOCK

Publication

EP 0279022 B1 19910911 (DE)

Application

EP 87114370 A 19871001

Priority

CH 19487 A 19870120

Abstract (en)

[origin: EP0279022A1] The high-consistency pulper (1) is connected to a mixer (2) through an opening (14) in the wall (15). Paper stock in crumb form continuously penetrates through the opening (14) into the mixer (2) where the stock is diluted to a lower and pumpable consistency. A cleaning circulation loop, for example with a drum screen (20), can be provided, in which impurities are removed from the plant. <IMAGE>

IPC 1-7

D21B 1/34

IPC 8 full level

D21B 1/34 (2006.01)

CPC (source: EP)

D21B 1/345 (2013.01)

Designated contracting state (EPC)

AT DE FR IT NL

DOCDB simple family (publication)

EP 0279022 A1 19880824; EP 0279022 B1 19910911; AT E67254 T1 19910915; DE 3704461 A1 19880728; DE 3704461 C2 19921022; DE 3772967 D1 19911017

DOCDB simple family (application)

EP 87114370 A 19871001; AT 87114370 T 19871001; DE 3704461 A 19870213; DE 3772967 T 19871001