Marking and authenticating articles

Medium and process for generating acid using sensitizing dye and

Method and apparatus for indicating ultraviolet light exposure

Method and material for photographic processing

Method for forming an image and silver halide photographic light

Method for printing on a portable data medium, particularly a sm

Method for providing optical patterns in glass

Method for recording information via photo-recording medium

Method of imaging

Method of pattern forming in a photosensitive composition having

Method of using multichromic polymers in packaging

Multicolor imaging using multiphoton photochemical processes

Multicolor thermal imaging method and thermal imaging member...

Multicolored photochromic display

Mutable dye composition and method of developing a color