Assignee
ILFORD LTD
GB30 patents
Top patents by PatentIndex Score
US5142384AAug 25, 1992
Holograms for packaging and display uses
ILFORD LTD73 citations93
US5003386AMar 26, 1991
Preparation of a copy hologram with a light modulating array derived from a master hologram
ILFORD LTD54 citations93
US5376510ADec 27, 1994
Concentrated photographic developing solution
ILFORD LTD21 citations90
US5360701ANov 1, 1994
Antistatic backing for photographic roll film
ILFORD LTD49 citations84
US4976799ADec 11, 1990
Method of preparing laminated holograms
ILFORD LTD21 citations80
US5104914AApr 14, 1992
Preparation of polymer dispersions and photographic elements containing polymer particles
ILFORD LTD7 citations71
US5017667AMay 21, 1991
Preparation of latexes of color coupler polymers
ILFORD LTD10 citations71
US4989071AJan 29, 1991
Method of preparing a hologram using readily available light sources
ILFORD LTD7 citations70
US5017469AMay 21, 1991
Twinned emulsions made from silver iodide seed crystals having an aspect ratio of at least 2:1
ILFORD LTD14 citations69
US4005926AFeb 1, 1977
Scanning device
ILFORD LTD21 citations69
US5688635ANov 18, 1997
Toning of photographic print material
ILFORD LTD14 citations63
US4019908AApr 26, 1977
Silver halide photographic material
ILFORD LTD4 citations60
US3946868AMar 30, 1976
Package containing a stack of flexible sheet material
ILFORD LTD19 citations60
US3945584AMar 23, 1976
Film cassettes
ILFORD LTD18 citations60
US4987479AJan 22, 1991
Method of preparing a color hologram suitable for display purposes
ILFORD LTD4 citations59
US3973328AAug 10, 1976
Paper material dryer
ILFORD LTD14 citations59
US4996141AFeb 26, 1991
Monomethine compounds
ILFORD LTD3 citations55
US4992346AFeb 12, 1991
Production of holograms
ILFORD LTD6 citations55
US4948714AAug 14, 1990
Processing of photographic silver halide materials
ILFORD LTD3 citations55
US5141845AAug 25, 1992
Process for the spectral sensitization of photographic silver halide emulsions and products thereof
ILFORD LTD3 citations54
US5043257AAug 27, 1991
Azo dyes for photographic silver dye bleach material
ILFORD LTD4 citations54
US5009991AApr 23, 1991
Silver halide emulsions containing twinned silver halide crystals
ILFORD LTD2 citations54
US5210010AMay 11, 1993
Silver halide developing solutions
ILFORD LTD4 citations52
US3983301ASep 28, 1976
Film base material
ILFORD LTD4 citations50
US5358832AOct 25, 1994
Fixing bath
ILFORD LTD2 citations48
US4977047ADec 11, 1990
Method of preparing a hologram
ILFORD LTD1 citations45
US4014862AMar 29, 1977
Production of hardened gelatin layers by the addition of quaternary carbamoyl pyridinium compounds
ILFORD LTD1 citations45
US4966440AOct 30, 1990
Post-exposure dye treatment in the production of holograms
ILFORD LTD1 citations41
US5770351AJun 23, 1998
Processing of monochrome photographic silver halide print material
ILFORD LTD0 citations39
US5333026AJul 26, 1994
Photographic material processor
ILFORD LTD0 citations38