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 0570796 B1 19981111 - Processing of reversal photographic materials

Title (en)

Processing of reversal photographic materials

Title (de)

Verarbeitung von Umkehrmaterialien

Title (fr)

Traitement par inversion des matériaux photographiques

Publication

EP 0570796 B1 19981111 (DE)

Application

EP 93107557 A 19930510

Priority

DE 4217022 A 19920522

Abstract (en)

[origin: EP0570796A2] In reversal processing, the washing between primary development and reversal bath can be avoided, without loss of photographic quality, if the reversal bath is moved in countercurrent with at least two stages.

IPC 1-7

G03C 5/50

IPC 8 full level

G03C 5/50 (2006.01)

CPC (source: EP US)

G03C 5/50 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE FR GB IT

DOCDB simple family (publication)

EP 0570796 A2 19931124; EP 0570796 A3 19940810; EP 0570796 B1 19981111; DE 4217022 A1 19931125; DE 59309118 D1 19981217; JP H0635135 A 19940210; US 5869224 A 19990209

DOCDB simple family (application)

EP 93107557 A 19930510; DE 4217022 A 19920522; DE 59309118 T 19930510; JP 13900693 A 19930518; US 5998393 A 19930512