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: 157 117 910 patent documents

This week's update (12/07/2024 12:00 CET):

139 301 new documents added

1 340 825 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 0559276 A1 19930908 - Processing photographic colour negative films.

Title (en)

Processing photographic colour negative films.

Title (de)

Verarbeitung von Farbnegativfilmen.

Title (fr)

Traitement de films couleur négatifs.

Publication

EP 0559276 A1 19930908

Application

EP 93200538 A 19930225

Priority

GB 9204406 A 19920229
GB 9216330 A 19920731

Abstract (en)

A method of reducing the chemical load on the bleach bath during the processing an imagewise exposed photographic multilayer colour negative film by using, instead of a grey silver antihalation layer, a dye-containing, silver-free layer which is destroyed or otherwise removed during photographic processing as the sole antihalation layer in the film.

IPC 1-7

G03C 1/83

IPC 8 full level

G03C 1/83 (2006.01); G03C 7/00 (2006.01); G03C 7/42 (2006.01)

CPC (source: EP)

G03C 1/832 (2013.01)

Citation (search report)

[X] EP 0316013 A2 19890517 - FUJI PHOTO FILM CO LTD [JP]
[YD] EP 0299435 A2 19890118 - EASTMAN KODAK CO [US]

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0559276 A1 19930908; JP H063789 A 19940114

DOCDB simple family (application)

EP 93200538 A 19930225; JP 3832693 A 19930226