Application of Elkan R. Blout and Howard G. Rogers

WORLEY, Chief Judge.

Blout and Rogers appeal from the board’s affirmance of the rejection of claims 40 through 52 of their patent application. 1

The invention relates to the formation of color transfer images, primarily in Polaroid Land camera film, by diffusion transfer processes. The point of novelty is said to reside in the use of compounds having a silver halide developing moiety separated from a dye moiety by an organic radical which serves to both link and insulate the two. The significance of the insulating group is that it prevents conjugation or resonance between the dye function and…