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Featured researches published by Tappe Gustav.


Archive | 1991

Bleach baths for processing silver halide photographic materials - contg. ferric iron complex with biodegradable nitrilo mono:acetic acid di:carboxylic acid complex former

Wichmann Ralf Dr; Tappe Gustav; Meckl Heinz Dr


Archive | 2000

One-part photographic bleach-fixing concentrate, useful for preparing or regenerating bleach-fixing bath in color photographic processing, contains thiosulfate, (di)sulfite or sulfinic acid and iron(II) complex salt

Tappe Gustav; Koerner Wolfgang


Archive | 1994

Photographic bleach bath with suppressed iron hydroxide pptn. - contg. biodegradable iron complex of amino-, imino- or nitrilo-carboxylic acid and biodegradable free hydroxy-carboxylic acid

Tappe Gustav; Wichmann Ralf Dr; Meckl Heinz Dr


Archive | 1992

Bleach bath contg. nitrilo di:acetic mono:propionic acid as chelant

Tappe Gustav; Wichmann Ralf Dr; Meckl Heinz Dr


Archive | 2000

Single component color developer contains color developer(s), oxidation preventer(s), lime prevention agent(s), a buffer system, an alkali and cations including sodium cations

Tappe Gustav; Koerner Wolfgang


Archive | 2003

Two part photographic color developer concentrate for use with high chloride-content silver halide color photographic paper has a reduced diethylhydroxylamine content

Tappe Gustav


Archive | 2001

p-Phenylendiaminderivat-Konzentrat

Tappe Gustav; Koerner Wolfgang; Schmid Gerhard


Archive | 2000

Photographic black-and-white processing with ascorbic acid or derivative in developer, useful for film and paper, uses oligophosphate in stop or stop-fix bath

Tappe Gustav; Tromnau Rudolf; Weimann Ralf


Archive | 2000

Stable, one-part, multiphase color developer concentrate containing antioxidant, anti-lime agent, buffer and alkali has alkaline aqueous phase and organic phase(s) containing water-soluble solvent and benzyl alcohol or polyalcohol

Tappe Gustav; Koerner Wolfgang


Archive | 2000

Alkaline color photographic aqueous developer solution based on color developer substance and antioxidant contains open-chain carbonamide or sulfonamide as water-soluble organic ancillary solvent

Tappe Gustav; Huebsch Thomas

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