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Current content: 156 978 933 patent documents

This week's update (05/07/2024 12:00 CET):

169 914 new documents added

2 331 667 documents amended

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EP 0115078 B1 19890426 - ELECTROCHROMIC REGISTRATION MEDIUM

Title (en)

ELECTROCHROMIC REGISTRATION MEDIUM

Publication

EP 0115078 B1 19890426 (DE)

Application

EP 83113165 A 19831228

Priority

US 45992983 A 19830121

Abstract (en)

[origin: US4444626A] An electrochromic printable medium which includes a substrate coated with certain organic compounds and with the reduced form of an oxidizing agent; and use thereof for electrochromic printing.

IPC 1-7

B41M 5/20

IPC 8 full level

B41M 5/20 (2006.01)

CPC (source: EP US)

B41M 5/20 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

US 4444626 A 19840424; CA 1212834 A 19861021; DE 3379719 D1 19890601; EP 0115078 A2 19840808; EP 0115078 A3 19850619; EP 0115078 B1 19890426; JP S59138488 A 19840808

DOCDB simple family (application)

US 45992983 A 19830121; CA 441868 A 19831124; DE 3379719 T 19831228; EP 83113165 A 19831228; JP 21341983 A 19831115