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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

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EP 0254151 B1 19901205 - COLOUR PHOTOGRAPHIC MATERIAL CONTAINING COUPLERS

Title (en)

COLOUR PHOTOGRAPHIC MATERIAL CONTAINING COUPLERS

Publication

EP 0254151 B1 19901205 (DE)

Application

EP 87109964 A 19870710

Priority

DE 3624777 A 19860722

Abstract (en)

[origin: EP0254151A2] Using a colour-photographic recording material which contains both a coupler of the formula I and a coupler of the formula II, stable cyan image dyes having a desired absorption maximum at about 700 nm can be produced by chromogenic development. <IMAGE>

IPC 1-7

G03C 7/34

IPC 8 full level

G03C 7/34 (2006.01)

CPC (source: EP)

G03C 7/342 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0254151 A2 19880127; EP 0254151 A3 19881214; EP 0254151 B1 19901205; DE 3624777 A1 19880128; DE 3766558 D1 19910117; JP S6333745 A 19880213

DOCDB simple family (application)

EP 87109964 A 19870710; DE 3624777 A 19860722; DE 3766558 T 19870710; JP 18128687 A 19870722