Selectively permeable layers for diffusion transfer film units

Shallow relief photopolymer printing plate and methods

Single emulsion phase and amplitude transparency

Single level masking process with two positive photoresist layer

Small phosphor area black matrix fabricating process

Spectrally sensitized positive light-sensitive o-quinone diazide

Spray etch dicing method

Stabilization of developed photographic images

Stabilization of free-radical photosensitive materials

Stabilization of photosensitive recording material

Substituted-halide silver halide emulsions and products containi

Substractive developer for negative working lithographic plates

Subtractive developer for lithographic plates

Sulfinyl-sulfonyl alkane silver halide solvents

Sulfonamido dye releaser in photographic dye diffusion transfer

Suspension device and a rapping mechanism for electrodes in an e

Suspension device and rapping mechanism for electrodes in an ele

System for making composite photomicrographs