Photochromic electrophoretic ink display

Photochromic glass

Photochromic glasses

Photochromic glasses exhibiting dichroism, birefringence and col

Photochromic glasses suitable for simultaneous heat treatment an

Photochromic glasses which darken to a brown hue

Photochromic hot melt ink compositions

Photochromic microemulsion ink compositions

Photochromic sheet glass compositions and method

Photographic element containing acid processed gelatin

Photographic element having a fire-retardant protective overcoat

Photographic element of improved antistatic and slippage propert

Photoinitiators for use in intaglio printing inks

Photosensitive colored glasses

Photosensitive dispersion with adjustable viscosity for the...

Photosensitive optically variable ink compositions useful...

Photosensitive optically variable ink heterogeneous...

Photostabilised effect pigments

Photostable yellow composite pigments and process for their prep

Phototropic glass for multifocal spectacle-glasses