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 0257451 B1 19911023 - COLOUR-PHOTOGRAPHIC RECORDING MATERIAL

Title (en)

COLOUR-PHOTOGRAPHIC RECORDING MATERIAL

Publication

EP 0257451 B1 19911023 (DE)

Application

EP 87111670 A 19870812

Priority

DE 3628318 A 19860821

Abstract (en)

[origin: US4952487A] In combination with oil formers of the alkylphenol type, 3-anilinopyrazolones show absorption maxima displaced by about 8 to 12 nm towards longer wavelengths and a blue secondary absorption further displaced towards the UV range and, hence, a reduced yellow secondary density.

IPC 1-7

G03C 7/26; G03C 7/38

IPC 8 full level

G03C 7/38 (2006.01); G03C 7/26 (2006.01); G03C 7/30 (2006.01); G03C 7/388 (2006.01)

CPC (source: EP US)

G03C 7/3012 (2013.01 - EP US); G03C 7/3885 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

EP 0257451 A2 19880302; EP 0257451 A3 19890503; EP 0257451 B1 19911023; DE 3628318 A1 19880225; DE 3774037 D1 19911128; JP S6353552 A 19880307; US 4952487 A 19900828

DOCDB simple family (application)

EP 87111670 A 19870812; DE 3628318 A 19860821; DE 3774037 T 19870812; JP 20496987 A 19870818; US 45816789 A 19891228