58556 ⎘
Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components Desensitisers; Compositions for fault correction, detection or identification of the layers
Marking system
#2Marking system
#3Irreversible color changing ink compositions
#4Pressure-chromic tape and methods of making same
#5Non-tacky wetness indicator composition for application on a polymeric substrate
#6Container identification device