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).

  • Publication number: 20050133533
    Abstract: 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: Application
    Filed: December 21, 2004
    Publication date: June 23, 2005
    Applicant: AgfaPhoto GmbH
    Inventors: Ralf Wichmann, Gustav Tappe, Tibor Candel-Delic, Boze Marsic
  • Publication number: 20050133530
    Abstract: 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: Application
    Filed: December 21, 2004
    Publication date: June 23, 2005
    Applicant: AgfaPhoto GmbH
    Inventors: Ralf Wichmann, Gustav Tappe, Tibor Candel-Delic, Boze Marsic
  • Publication number: 20040058283
    Abstract: 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: Application
    Filed: September 23, 2003
    Publication date: March 25, 2004
    Inventors: Gustav Tappe, Wolfgang Korner
  • Patent number: 6468724
    Abstract: 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: Grant
    Filed: June 7, 2001
    Date of Patent: October 22, 2002
    Assignee: Agfa-Gevaert
    Inventors: Gustav Tappe, Matthias Porger
  • Patent number: 6468723
    Abstract: 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: Grant
    Filed: May 14, 2001
    Date of Patent: October 22, 2002
    Assignee: Agfa-Gevaert N.V.
    Inventors: Gustav Tappe, Wolfgang Körner, Gerhard Schmid
  • Patent number: 6413703
    Abstract: 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: Grant
    Filed: September 11, 2000
    Date of Patent: July 2, 2002
    Assignee: AGFA-Gevaert
    Inventors: Gustav Tappe, Wolfgang körner
  • Publication number: 20020010963
    Abstract: 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: Application
    Filed: May 25, 2001
    Publication date: January 31, 2002
    Inventors: Gustav Tappe, Wolfgang Korner
  • Publication number: 20010055734
    Abstract: 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: Application
    Filed: May 14, 2001
    Publication date: December 27, 2001
    Inventors: Gustav Tappe, Wolfgang Korner, Gerhard Schmid
  • Publication number: 20010036605
    Abstract: 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: Application
    Filed: June 7, 2001
    Publication date: November 1, 2001
    Inventors: Gustav Tappe, Matthias Porger
  • Patent number: 6251573
    Abstract: 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: Grant
    Filed: April 7, 2000
    Date of Patent: June 26, 2001
    Assignee: Agfa-Gevaert
    Inventors: Gustav Tappe, Wolfgang Körner
  • Patent number: 5888709
    Abstract: 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: Grant
    Filed: August 26, 1996
    Date of Patent: March 30, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Hans Ohlschlager, Wolfgang Schmidt, Dieter Rockser, Gustav Tappe
  • Patent number: 5856074
    Abstract: 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: Grant
    Filed: October 17, 1997
    Date of Patent: January 5, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Gustav Tappe, Norman Klaunzer
  • Patent number: 5565138
    Abstract: 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: Grant
    Filed: October 27, 1994
    Date of Patent: October 15, 1996
    Assignee: Agfa AG
    Inventors: Norman Klaunzer, Ralf Wichmann, Gustav Tappe, Eltjo Boelema
  • Patent number: 5238791
    Abstract: 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: Grant
    Filed: November 27, 1991
    Date of Patent: August 24, 1993
    Assignee: AGFA Gevaert Aktiengesellschaft
    Inventors: Gustav Tappe, Ralf Wichmann, Heinz Meckl
  • Patent number: 5149618
    Abstract: 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: Grant
    Filed: September 20, 1991
    Date of Patent: September 22, 1992
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Gustav Tappe, Ralf Wichmann, Heinz Meckl, Edgar Draber
  • Patent number: 5110715
    Abstract: 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: Grant
    Filed: October 10, 1989
    Date of Patent: May 5, 1992
    Assignee: Agfa Gavaert Aktiengesellschaft
    Inventors: Ubbo Wernicke, Werner Berthold, Helmut Haseler, Gustav Tappe
  • Patent number: 4987058
    Abstract: 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: Grant
    Filed: June 13, 1990
    Date of Patent: January 22, 1991
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Erika Spriewald, Gustav Tappe, Heinz Meckl
  • Patent number: 4933264
    Abstract: 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: Grant
    Filed: August 18, 1989
    Date of Patent: June 12, 1990
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Helmut Haseler, Heinz Meckl, Gustav Tappe