Global Patent Index - EP 1057653 A1

EP 1057653 A1 2000-12-06 - Method of producing color changes

Title (en)

Method of producing color changes

Title (de)

Erzeugungsverfahren zur Farbänderung

Title (fr)

Procédé de changement de couleur

Publication

EP 1057653 A1 (EN)

Application

EP 99870112 A

Priority

EP 99870112 A

Abstract (en)

Color changes in a medium are achieved using electrochemically sensitive materials. Application of electric potential to electrodes in proximity to the materials induces a color change in the materials. A material may include electrochemically sensitive components such as pH indicators, Red-ox indicators, metalloindicators that are not red-ox systems, bleaching agents, pigments or combinations of these components. <IMAGE>

IPC 1-7 (main, further and additional classification)

B41M 5/20

IPC 8 full level (invention and additional information)

B41M 5/20 (2006.01); B41M 7/00 (2006.01)

CPC (invention and additional information)

B41M 5/20 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1057653 A1 20001206

INPADOC legal status


2002-05-16 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2002-04-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010607

2001-08-22 [AKX] PAYMENT OF DESIGNATION FEES

2000-12-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-12-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI