Patents by Inventor Ralf Wichmann
Ralf Wichmann 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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Patent number: 7160674Abstract: A bundle for simultaneous refilling of chemicals for processing color photography silver halide materials in an automatic processing apparatus, wherein the bundle comprises at least one bottle with the refilling solution for a color developer and at least two bottles with refilling solutions for a bleach-fixing bath, characterized in that the bottle with the refilling solution for the color developer comprises more than 60 g of color developer substance per 1 L of bottle volume, is distinguished in that the capacity of the bundle is increased.Type: GrantFiled: July 29, 2004Date of Patent: January 9, 2007Assignee: A&O Imagining Solutions GmbHInventor: Ralf Wichmann
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Patent number: 7028719Abstract: A pack for concentrates of a plurality of photographic processing chemicals comprising a carton of standard height, width and depth, in which at least two chemicals bottles are disposed alongside one another, with their outlet openings situated at the same height (viewed from the carton base) and a predetermined distance apart from one another, wherein one carton side comprises features which permit a smooth mounting onto a specially provided surface of the processing unit and docking to the processing unit in one way only, allows almost automatic replenishing of the photographic processing solutions in the processing unit in combination with easiest handling.Type: GrantFiled: March 22, 2005Date of Patent: April 18, 2006Assignee: AgfaPhoto GmbHInventors: Hans-Dieter Danner, Detlef Ehrenberg, Wilfried Hehn, Stefan Huber, Ralf Wichmann, Bernd Zeier
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Patent number: 6951276Abstract: A pack for concentrates of a plurality of photographic processing chemicals comprising a carton of standard height, width and depth, in which at least two chemicals bottles are disposed alongside one another, with their outlet openings situated at the same height (viewed from the carton base) and a predetermined distance apart from one another, wherein one carton side comprises features which permit a smooth mounting onto a specially provided surface of the processing unit and docking to the processing unit in one way only, allows almost automatic replenishing of the photographic processing solutions in the processing unit in combination with easiest handling.Type: GrantFiled: April 1, 2002Date of Patent: October 4, 2005Assignee: AgfaPhoto GmbHInventors: Hans-Dieter Danner, Detlef Ehrenberg, Wilfried Hehn, Stefan Huber, Ralf Wichmann, Bernd Zeier
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Publication number: 20050167298Abstract: A pack for concentrates of a plurality of photographic processing chemicals comprising a carton of standard height, width and depth, in which at least two chemicals bottles are disposed alongside one another, with their outlet openings situated at the same height (viewed from the carton base) and a predetermined distance apart from one another, wherein one carton side comprises features which permit a smooth mounting onto a specially provided surface of the processing unit and docking to the processing unit in one way only, allows almost automatic replenishing of the photographic processing solutions in the processing unit in combination with easiest handling.Type: ApplicationFiled: March 22, 2005Publication date: August 4, 2005Applicant: AgfaPhoto GmbHInventors: Hans-Dieter Danner, Detlef Ehrenberg, Wilfried Hehn, Stefan Huber, Ralf Wichmann, Bernd Zeier
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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: 20050048420Abstract: A bundle for simultaneous refilling of chemicals for processing colour photography silver halide materials in an automatic processing apparatus, wherein the bundle comprises at least one bottle with the refilling solution for a colour developer and at least two bottles with refilling solutions for a bleach-fixing bath, characterized in that the bottle with the refilling solution for the colour developer comprises more than 60 g of colour developer substance per 1 L of bottle volume, is distinguished in that the capacity of the bundle is increased.Type: ApplicationFiled: July 29, 2004Publication date: March 3, 2005Applicant: Agfa-Gevaert N.V.Inventor: Ralf Wichmann
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Patent number: 6824965Abstract: A bleach or bleach/fixing solution for processing photographic silver halide materials which, relative to the silver halide content of the unprocessed material, exhibit prior to the bleaching step a content of silver arising from development of at least 65 mol %, in particular for processing color reversal materials, characterized in that the solution contains at least one iron complex of propylenediaminetetraacetic acid or of &bgr;-alaninediacetic acid or a mixture of these complexes and the total concentration of the stated iron complexes in the solution is at least 0.045 and at most 0.25 mol/l and a process for processing, in which such a solution is used, is characterized by a small introduced quantity of iron complexes, a low residual silver content, a low bleaching fog value, elevated resistance to precipitation and in that the bleach solution may be rejuvenated.Type: GrantFiled: August 1, 2001Date of Patent: November 30, 2004Assignee: AGFA-GevaertInventors: Ralf Wichmann, Thomas Hübsch, Thomas Stetzer
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Publication number: 20040023168Abstract: A single-part colour developing concentrate with a pH greater than or equal to 7 which contains at least 0.02 mol of a colour developer substance and at least 0.015 mol of an antioxidant per litre, characterised in that the concentrate contains 0.05 to 35 g per litre of a wetting agent soluble in water in this amount, is distinguished by very good stability in storage at low temperatures and the discharge behaviour from the concentrate bottle is considerably improved and soiling of the processing equipment is avoided. Furthermore, the optical brightener precipitation occurring in practice in the bleach fixing bath is also prevented.Type: ApplicationFiled: July 18, 2003Publication date: February 5, 2004Applicant: Agfa-GevaertInventors: Ralf Wichmann, Frank Dovecar
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Publication number: 20020117416Abstract: A pack for concentrates of a plurality of photographic processing chemicals comprising a carton of standard height, width and depth, in which at least two chemicals bottles are disposed alongside one another, with their outlet openings situated at the same height (viewed from the carton base) and a predetermined distance apart from one another, wherein one carton side comprises features which permit a smooth mounting onto a specially provided surface of the processing unit and docking to the processing unit in one way only, allows almost automatic replenishing of the photographic processing solutions in the processing unit in combination with easiest handling.Type: ApplicationFiled: April 1, 2002Publication date: August 29, 2002Inventors: Hans-Dieter Danner, Detlef Ehrenberg, Wilfried Hehn, Stefan Huber, Ralf Wichmann, Bernd Zeier
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Publication number: 20020037482Abstract: A bleach or bleach/fixing solution for processing photographic silver halide materials which, relative to the silver halide content of the unprocessed material, exhibit prior to the bleaching step a content of silver arising from development of at least 65 mol %, in particular for processing color reversal materials, characterized in that the solution contains at least one iron complex of propylenediaminetetraacetic acid or of &bgr;-alaninediacetic acid or a mixture of these complexes and the total concentration of the stated iron complexes in the solution is at least 0.045 and at most 0.25 mol/l and a process for processing, in which such a solution is used, is characterized by a small introduced quantity of iron complexes, a low residual silver content, a low bleaching fog value, elevated resistance to precipitation and in that the bleach solution may be rejuvenated.Type: ApplicationFiled: August 1, 2001Publication date: March 28, 2002Inventors: Ralf Wichmann, Thomas Hubsch, Thomas Stetzer
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Patent number: 6350563Abstract: A photographic black-and-white reversal first developer, which is substantially free from hydroquinone and which contains at least substances a) to d): a) hydroquinonesulphonic acid, b) a polyglycol with an average molecular weight of 200 to 600, c) an anti-fogging agent, and d) an auxiliary developer, gives clear light regions and high maximum densities after reversal development and can also be used at temperatures considerably above 20° C.Type: GrantFiled: November 16, 1998Date of Patent: February 26, 2002Assignee: AGFA-GevaertInventors: Ralf Wichmann, Ubbo Wernicke
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Patent number: 5716767Abstract: A bleaching bath for photographic black-&-white silver halide materials characterised by the combination of at least 2 oxidising agents having an oxidising potential of .gtoreq.500 mV, optionally together with a metal salt having a stabilising action of a metal of subgroups 1 or 2 of the periodic system of elements, wherein, in the event that dichromate is used as one of the oxidising agents, it is used in a quantity of at most 3.4 mmol/l.Type: GrantFiled: December 17, 1996Date of Patent: February 10, 1998Assignee: Agfa-Gevaert AGInventors: Ubbo Wernicke, Ralf Wichmann
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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: 5354649Abstract: A color photographic silver halide material in which at least one silver halide emulsion consists of 85 to 99 mol-% AgCl, 1 to 10 mol-% AgI and 0 to 5 mol-% AgBr has high sensitivity (camera sensitivity) and can be developed in at most 120 s.Type: GrantFiled: August 4, 1993Date of Patent: October 11, 1994Assignee: Agfa Gevaert AktiengesellschaftInventors: Peter Bell, Jurgen Haekel, Cuong Ly, Reinhart Matejec, Ralf Wichmann
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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: 5009985Abstract: Iron(III)-complexes of compounds of the formula ##STR1## wherein R.sub.1 denotes a substituent,m denotes 1 or 2 andn denotes 0, 1 or 2are valuable and biodegradable bleaching agents for photographic elements.Type: GrantFiled: August 22, 1990Date of Patent: April 23, 1991Assignee: Agfa-Gevaert AktiengesellschaftInventors: Friedrich-Wilhelm Kunitz, Ralf Wichmann