Patents by Inventor Gustav Tappe
Gustav Tappe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20050133533Abstract: A package for storing photographic processing chemicals and for filling a tank of a processing apparatus with the processing chemicals, which package contains at least two different chemicals spatially separated in chambers, characterized in that the chemicals belong to the same processing step and the package is constructed such that the various chemicals are brought into contact with one another within the package before the tank is filled with them and/or are brought into contact with one another while the tank is filled with them, is distinguished in that it offers the handling advantage of one-component concentrates without the disadvantages thereof and leads to a better reproducibility of the processing compared with the known multi-component formulations.Type: ApplicationFiled: December 21, 2004Publication date: June 23, 2005Applicant: AgfaPhoto GmbHInventors: Ralf Wichmann, Gustav Tappe, Tibor Candel-Delic, Boze Marsic
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Publication number: 20050133530Abstract: A package for storing photographic colour development concentrates and for filling a tank of a processing apparatus with the colour development concentrates, wherein the package contains at least two different chemicals spatially separated in chambers, characterized in that the package is constructed such that the various chemicals either are brought into contact with one another within the package before the tank is filled with them and/or are brought into contact with one another while the tank is filled with them, is distinguished in that it offers the handling advantage of one-component concentrates without the disadvantages thereof and leads to a better reproducibility of the processing compared with the known multi-component formulations.Type: ApplicationFiled: December 21, 2004Publication date: June 23, 2005Applicant: AgfaPhoto GmbHInventors: Ralf Wichmann, Gustav Tappe, Tibor Candel-Delic, Boze Marsic
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Publication number: 20040058283Abstract: A one-part photographic bleach-fixing concentrate containing an iron(III) complex salt, a thiosulphate and a sulphite, a disulphite or a sulphinic acid, remains stable if a phosphate, polyphosphate or polyphosphonate, or a nitrate or bromide is added thereto.Type: ApplicationFiled: September 23, 2003Publication date: March 25, 2004Inventors: Gustav Tappe, Wolfgang Korner
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Patent number: 6468723Abstract: A concentrated aqueous solution of a p-phenylenediamine derivative, which a) has a pH higher than 12.5, b) contains 0.4 to 1.1 mol p-phenylenediamine derivative/litre, c) contains 0.05 to 2 mol of an antioxidant/litre, d) contains at most 35% by weight of organic solvents with respect to the total solution, e) contains at most 50 mmol sulphate ions/litre and f) is single-phase, is suitable for the production of different colour developer formulations.Type: GrantFiled: May 14, 2001Date of Patent: October 22, 2002Assignee: Agfa-Gevaert N.V.Inventors: Gustav Tappe, Wolfgang Körner, Gerhard Schmid
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Patent number: 6468724Abstract: A two-part color photographic developer concentrate in which part 1 contains at least one antioxidant selected from the group consisting of diethylhydroxylamine and diethylhydroxylamine disulfo acid, at least one auxiliary solvent, at least one optical brightener and at least one color developer substance and part 2 contains at least one buffer substance, alkali and at least one water softener, may be produced by part 1 additionally containing 0.001 to 1 mol of hydroxylamine or a monoalkylated hydroxylamine or the salts thereof per liter of concentrate concentrate and at least 20% by weight of the total of part 1 being water.Type: GrantFiled: June 7, 2001Date of Patent: October 22, 2002Assignee: Agfa-GevaertInventors: Gustav Tappe, Matthias Porger
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Patent number: 6413703Abstract: A one-part colour developer concentrate which contains at least one colour developer substance, at least one antioxidant, at least one water softener, a buffer system, alkali, which concentrate contains at most 0.1 mol of sulfate ions/L, is usable for a wide range of regeneration rates and exhibits no precipitation at down to −7° C. if it is prepared as a multi-phase concentrate using organic, water-soluble solvents.Type: GrantFiled: September 11, 2000Date of Patent: July 2, 2002Assignee: AGFA-GevaertInventors: Gustav Tappe, Wolfgang körner
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Publication number: 20020010963Abstract: A one-part photographic bleach-fixing concentrate containing an iron(III) complex salt, a thiosulphate and a sulphite, a disulphite or a sulphinic acid, remains stable if a phosphate, polyphosphate or polyphosphonate, or a nitrate or bromide is added thereto.Type: ApplicationFiled: May 25, 2001Publication date: January 31, 2002Inventors: Gustav Tappe, Wolfgang Korner
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Publication number: 20010055734Abstract: A concentrated aqueous solution of a p-phenylenediamine derivative, which a) has a pH higher than 12.5, b) contains 0.4 to 1.1 mol p-phenylenediamine derivative/litre, c) contains 0.05 to 2 mol of an antioxidant/litre, d) contains at most 35% by weight of organic solvents with respect to the total solution, e) contains at most 50 mmol sulphate ions/litre and f) is single-phase, is suitable for the production of different colour developer formulations.Type: ApplicationFiled: May 14, 2001Publication date: December 27, 2001Inventors: Gustav Tappe, Wolfgang Korner, Gerhard Schmid
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Publication number: 20010036605Abstract: A two-part color photographic developer concentrate in which part 1 contains at least one antioxidant selected from the group consisting of diethylhydroxylamine and diethylhydroxylamine disulfo acid, at least one auxiliary solvent, at least one optical brightener and at least one color developer substance and part 2 contains at least one buffer substance, alkali and at least one water softener, may be produced by part 1 additionally containing 0.001 to 1 mol of hydroxylamine or a monoalkylated hydroxylamine or the salts thereof per liter of concentrate concentrate and at least 20% by weight of the total of part 1 being water.Type: ApplicationFiled: June 7, 2001Publication date: November 1, 2001Inventors: Gustav Tappe, Matthias Porger
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Patent number: 6251573Abstract: A one-part color developer concentrate which comprises at least two phases and which is free from precipitates at 20° C., which contains at least one color developer substance, at least one antioxidant, at least one anti-lime agent, a buffer system and alkali, one phase of which is aqueous and the other phase of which is organic, wherein the aqueous phase has a pH of at least 9, is obtained when the concentrate has a concentration of cations from 0.5 to 15 mol/l, wherein at least 10 mol % of the cations are sodium ions and the organic phase is formed from one or more water-soluble solvents, and wherein 50 to 95% by weight of the sum of water and water-soluble solvents is water.Type: GrantFiled: April 7, 2000Date of Patent: June 26, 2001Assignee: Agfa-GevaertInventors: Gustav Tappe, Wolfgang Körner
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Patent number: 5888709Abstract: Oxonol dyes of the formula I ##STR1## in which R.sub.1, R.sub.2 mean an optionally substituted furyl or thienyl group,R.sub.3, R.sub.4 mean an aryl group substituted with at least two sulpho groups,L means CH or CR.sub.5,R.sub.5 means C.sub.1 -C.sub.4 alkyl andn means 0, 1 or 2,give rise in a photographic material to an improvement in sharpness.Type: GrantFiled: August 26, 1996Date of Patent: March 30, 1999Assignee: Agfa-Gevaert AGInventors: Hans Ohlschlager, Wolfgang Schmidt, Dieter Rockser, Gustav Tappe
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Patent number: 5856074Abstract: This invention relates to a fixing bath containing a biologically degradable complexing agent of formula I ##STR1## wherein R.sup.1-4 represents hydrogen, C.sub.1 -C.sub.10 -alkyl, hydroxy-C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy-C.sub.1 -C.sub.10 -alkyl, carboxy-C.sub.2 -C.sub.10 -alkyl, dicarboxy-C.sub.1 -C.sub.10 -alkyl, carboxy-hydroxy-C.sub.1 -C.sub.10 -alkyl, hydroxy-C.sub.1 -C.sub.5 -alkyl-(oxy-C.sub.1 -C.sub.5 -alkyl).sub.n, or C.sub.1 -C.sub.5 -alkoxy-C.sub.1 -C.sub.5 -alkyl-(oxy-C.sub.1 -C.sub.5 -alkyl).sub.n,M represents hydrogen, lithium, sodium, potassium or ammonium, andn represents 1, 2, 3 or 4,the iron(III) complex salt of which does not impede electrolytic desilverisation during the regeneration of spent fixing bath.Type: GrantFiled: October 17, 1997Date of Patent: January 5, 1999Assignee: Agfa-Gevaert AGInventors: Gustav Tappe, Norman Klaunzer
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Patent number: 5565138Abstract: A bleach prepared from an iron (III) complex of a complexing agent of the formula I ##STR1## in which L.sub.1, L.sub.2 mean an optionally substituted alkylene group with 1 to 4 C atomsL.sub.3 means an alkylene group with 1 to 4 C atoms,Z.sub.1, Z.sub.2 mean OH, NH.sub.2, NHR.sub.2,X means N, P.dbd.0, SO.sub.2 HY.sub.1 means OH, NH.sub.2, NHR.sub.3, NR.sub.3 R.sub.4, SO.sub.3 H, PO.sub.3 H.sub.2, NHCOR.sub.5,R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 mean optionally substituted alkyl or optionally substituted phenylexhibits excellent bleaching action.Type: GrantFiled: October 27, 1994Date of Patent: October 15, 1996Assignee: Agfa AGInventors: Norman Klaunzer, Ralf Wichmann, Gustav Tappe, Eltjo Boelema
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Patent number: 5238791Abstract: A readily biodegradable bleaching bath having an adequate bleaching effect(1) contains an iron(III) complex salt in which at least 20 mol-% and preferably at least 80 mol-% of the complexing agent corresponds to formula (I) ##STR1## in which R.sub.1 is hydrogen or hydroxy,n is 1 or 2,x is 2 or 3 andy is 0 or 1and the sum of x and y is always 3, and(2) an excess of free complexing agent of 1 to 120 mol-% and preferably 5 to 20 mol-%, based on the iron complex or the iron complex salt, and(3) is adjusted to a pH value of .ltoreq.4.5.Type: GrantFiled: November 27, 1991Date of Patent: August 24, 1993Assignee: AGFA Gevaert AktiengesellschaftInventors: Gustav Tappe, Ralf Wichmann, Heinz Meckl
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Patent number: 5149618Abstract: The process for bleach fixing an exposed and developed color photographic material whose silver halide emulsion layers contain silver chlorobromide emulsions having a silver bromide content of from 0.3 to 2.0 mol%, in which the bleach fixing bath (1) contains, as bleaching agent, an iron(III) complex at least 50 mol% of whose complex former corresponds to the following formula ##STR1## (2) is adjusted to a pH of x where 7.0>.times.>4.5 and (3) contains a thiosulphateis distinguished by a powerful bleaching action and great environmental compatibility.Type: GrantFiled: September 20, 1991Date of Patent: September 22, 1992Assignee: Agfa Gevaert AktiengesellschaftInventors: Gustav Tappe, Ralf Wichmann, Heinz Meckl, Edgar Draber
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Patent number: 5110715Abstract: The present invention relates to a photographic reversal process for the production of positive photographic images by imagewise exposure of the photosensitive material containing at least one silver halide emulsion layer, black-and-white first development of the material, chemical fogging or diffuse second exposure and subsequent color development, characterized in that1. at least one N,N-dialkyl-p-phenylenediamine derivative is used as sole developer in the first development,2. the first development bath contains at least one compound which prevents the developer oxidation product formed during the first development from reacting with the color couplers present in the color photographic reversal material to form image dyes,3.Type: GrantFiled: October 10, 1989Date of Patent: May 5, 1992Assignee: Agfa Gavaert AktiengesellschaftInventors: Ubbo Wernicke, Werner Berthold, Helmut Haseler, Gustav Tappe
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Patent number: 4987058Abstract: A processing method without washing gives good photographic properties, without a precipitate being deposited in the stabilizing bath, when the bleach-fixing bath contains a compound of the formulaFe(X).sub.2 DTPA,whereinX denotes alkali or ammonium,as bleaching agent, and the stabilizing bath contains a fungicide, HEDP and a hexametaphosphate.Type: GrantFiled: June 13, 1990Date of Patent: January 22, 1991Assignee: Agfa-Gevaert AktiengesellschaftInventors: Erika Spriewald, Gustav Tappe, Heinz Meckl
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Patent number: 4933264Abstract: In a process for the processing of color photographic silver halide material which has been exposed to form an image by development, bleachfixing, washing or stabilization and drying, the aqueous developer solution being free from benzyl alcohol, the pH value of the bleachfixing solution, which contains an iron(III) complex salt, being below 7 and the bleachfixing solution containing a compound corresponding to general formula (I) ##STR1## in which Z represents the atoms required to complete an optionally further substituted heterocyclic ring andR.sup.1 represents hydrogen or an alkali atom,and a coupler containing an activated methylene group, in which a hydrogen atom is replaced by alkyl, cycloalkyl, aryl or aralkyl and reacts with the oxidation product of the color developer to form colorless reaction products, bleaching can be carried out free from residual silver with a low regeneration level of the bleachfixing bath without any water-insoluble precipitates being formed.Type: GrantFiled: August 18, 1989Date of Patent: June 12, 1990Assignee: Agfa-Gevaert AktiengesellschaftInventors: Helmut Haseler, Heinz Meckl, Gustav Tappe