Inventor

COTNER RICHARD C

US7 patents

Patents

7 patents

US5493327AFeb 20, 1996

Method and apparatus for producing image reproducing materials using photothermographic material sensitive to radiation in the red region and transparent to radiation in the ultraviolet range of the electromagnetic spectrum

MINNESOTA MINING & MFG17 citations65

US5364733ANov 15, 1994

Photothermographic elements with novel layer structures, each of which contains a thermally-diffusible oxidizable leuco dye and process for producing a color image from leuco dye

MINNESOTA MINING & MFG3 citations61

US5206112AApr 27, 1993

Positive imaging diffusion - transfer dry silver system

MINNESOTA MINING & MFG3 citations61

US5415975AMay 16, 1995

Contrast-promoting agents in graphic arts media

MINNESOTA MINING & MFG3 citations59

US5278024AJan 11, 1994

Positive imaging diffusion-transfer dry silver system using formazan dye

MINNESOTA MINING & MFG1 citations51

US5264321ANov 23, 1993

Photothermographic elements with novel layer structures

MINNESOTA MINING & MFG1 citations50

US5494776AFeb 27, 1996

Hybrid graphic arts films with reduced occurrence of pepper fog

MINNESOTA MINING & MFG0 citations48