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IG Farbenindustrie AG
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IG Farbenindustrie AG
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Application filed by IG Farbenindustrie AGfiledCriticalIG Farbenindustrie AG
Application grantedgrantedCritical
Publication of FR830247ApublicationCriticalpatent/FR830247A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
G03C7/22—Subtractive cinematographic processes; Materials therefor; Preparing or processing such materials
G03C7/24—Subtractive cinematographic processes; Materials therefor; Preparing or processing such materials combined with sound-recording
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR830247D1936-12-021937-12-01Procédé pour l'obtention d'un tracé sonore d'argent dans des films sonores en couleurs
ExpiredFR830247A
(fr)