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Current content: 156 978 933 patent documents

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169 914 new documents added

2 331 667 documents amended

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EP 0284932 B1 19920506 - COLOUR-DEVELOPING SUBSTANCES

Title (en)

COLOUR-DEVELOPING SUBSTANCES

Publication

EP 0284932 B1 19920506 (DE)

Application

EP 88104428 A 19880319

Priority

AT 77687 A 19870331

Abstract (en)

[origin: EP0284932A2] The invention relates to colour developing substances for colour reaction systems, consisting of colour developer and optionally solvents as well as further fillers and additives. These substances contain, as colour developers, aromatic hydrocarbon resins in acid or salt form modified with aromatic carboxylic acids.

IPC 1-7

B41M 5/124

IPC 8 full level

B41M 5/155 (2006.01)

CPC (source: EP)

B41M 5/155 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0284932 A2 19881005; EP 0284932 A3 19890607; EP 0284932 B1 19920506; AT 399126 B 19950327; AT A77687 A 19940815; AT E75667 T1 19920515; DE 3870695 D1 19920611; ES 2004322 A4 19890101; ES 2004322 T3 19930101; GR 3005110 T3 19930524; GR 890300003 T1 19890308

DOCDB simple family (application)

EP 88104428 A 19880319; AT 77687 A 19870331; AT 88104428 T 19880319; DE 3870695 T 19880319; ES 88104428 T 19880319; GR 890300003 T 19890308; GR 920401450 T 19920708