EP 1057653 A1 20001206 - 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
Application
Priority
EP 99870112 A 19990604
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
IPC 8 full level
CPC (source: EP)
B41M 5/20 (2013.01)
Citation (search report)
- [XA] US 3409516 A 19681105 - IVES ROBERT S
- [A] US 3122488 A 19640225 - GERALD MANDEL
- [A] US 3399121 A 19680827 - KLEIN GERHARD P
- [A] US 3655527 A 19720411 - CURRAN ROBERT KYRAN, et al
- [XA] DATABASE WPI Section Ch Week 198004, Derwent World Patents Index; Class E24, AN 1980-06588C, XP002122013
- [A] DATABASE WPI Section Ch Week 197824, Derwent World Patents Index; Class A89, AN 1978-42946A, XP002122014
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99870112 A 19990604