ILFORD LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5688635 Toning of photographic print materialExpiredMay 06, 96Nov 18, 97[G03C]
5376510 Concentrated photographic developing solutionExpiredDec 13, 93Dec 27, 94[G03C]
5360701 Antistatic backing for photographic roll filmExpiredApr 19, 93Nov 01, 94[G03C]
5358832 Fixing bathExpiredOct 18, 93Oct 25, 94[G03C]
5333026 Photographic material processorExpiredAug 21, 92Jul 26, 94[G03D]
5210010 Silver halide developing solutionsExpiredApr 30, 92May 11, 93[G03C]
5142384 Holograms for packaging and display usesExpiredMay 07, 90Aug 25, 92[B65D, G03H]
5104914 Preparation of polymer dispersions and photographic elements containing polymer particlesExpiredMay 10, 90Apr 14, 92[C08L]
5017469 Twinned emulsions made from silver iodide seed crystals having an aspect ratio of at least 2:1ExpiredSep 01, 89May 21, 91[G03C]
5017667 Preparation of latexes of color coupler polymersExpiredDec 14, 88May 21, 91[C08F]
5009991 Silver halide emulsions containing twinned silver halide crystalsExpiredAug 31, 89Apr 23, 91[G03C]
5003386 Preparation of a copy hologram with a light modulating array derived from a master hologramExpiredDec 08, 89Mar 26, 91[H04N]
4996141 Monomethine compoundsExpiredJan 11, 89Feb 26, 91[G03C]
4992346 Production of hologramsExpiredDec 19, 89Feb 12, 91[G03C]
4989071 Method of preparing a hologram using readily available light sourcesExpiredMar 23, 89Jan 29, 91[H04N]
4987479 Method of preparing a color hologram suitable for display purposesExpiredMar 23, 89Jan 22, 91[H04N]
4976799 Method of preparing laminated hologramsExpiredDec 08, 89Dec 11, 90[B32B]
4977047 Method of preparing a hologramExpiredMar 01, 89Dec 11, 90[G03C]
4966440 Post-exposure dye treatment in the production of hologramsExpiredMar 22, 89Oct 30, 90[G03H]
4948714 Processing of photographic silver halide materialsExpiredAug 22, 89Aug 14, 90[G03C]

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