Patents by Inventor Jorg Hagemann
Jorg Hagemann 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: 5994044Abstract: A color photographic recording material which contains particles of elemental silicon and/or of solid compounds in which silicon is present in stoichiometric excess, having an average diameter of .ltoreq.120 nm, is distinguished by improved protection against UV radiation.Type: GrantFiled: October 15, 1998Date of Patent: November 30, 1999Assignee: Agfa-Gevaert AGInventors: Jorg Hagemann, Werner Hoheisel, Reimer Holm
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Patent number: 5981160Abstract: A colour photographic silver halide material which contains in at least one layer at least one compound of the general formula (I) ##STR1## in which R.sub.1 means hydrogen, alkyl or acyl,R.sub.2, R.sub.3 mutually independently mean alkyl, cycloalkyl, alkenyl, aryl, halogen, OR.sub.4, SR.sub.5, NR.sub.6 R.sub.7, nitro, cyano, SO.sub.2 R.sub.8, COOR.sub.9, COR.sub.10 or hetaryl,R.sub.4, R.sub.5, R.sub.9 mutually independently mean alkyl, cycloalkyl, alkenyl, aryl or hetaryl,R.sub.6, R.sub.7 mutually independently mean H, R.sub.4, COR.sub.10, COOR.sub.9, SO.sub.2 R.sub.8,R.sub.8, R.sub.10 mutually independently mean alkyl, cycloalkyl, alkenyl, aryl, hetaryl or NR.sub.6 R.sub.7,n, m mean 0, 1, 2, 3 or 4 or two residues R.sub.2 or R.sub.3 may each mean a fused carbo- or heterocyclic ring or the compounds of formula I are linked to a polymer chain via R.sub.1, R.sub.2 or R.sub.3is distinguished by elevated storage stability.Type: GrantFiled: April 2, 1998Date of Patent: November 9, 1999Assignee: Agfa-Gevaert AGInventors: Heinrich Odenwalder, Hans Langen, Jorg Hagemann, Klaus Henseler
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Patent number: 5935773Abstract: A colour photographic silver halide material with a support, at last one silver halide emulsion layer containing at least one yellow coupler and at least one silver halide emulsion layer containing a cyan coupler applied thereon, in which material the silver halide emulsion layer, of which there is at least one, containing at least one yellow coupler and/or the silver halide emulsion layer, of which there is at least one, containing at least one cyan coupler contains a compound of the formula (I) ##STR1## in which R.sub.1, R.sub.2, R.sub.3 mean alkyl, alkenyl or acyl andn means 6, 7 or 8,is distinguished by improved stability of the image dyes produced by processing.Type: GrantFiled: April 29, 1996Date of Patent: August 10, 1999Assignee: Agfa-Gevaert AGInventors: Jorg Hagemann, Gunter Helling
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Patent number: 5824465Abstract: Disclosed is a polyalkylene naphthalate film, preferably the homopolymer of naphthalene-2,6-dicarboxylic acid and ethylene glycol (PEN), comprising a UV absorbing compound of the 2-hydroxyphenyl-triazine type for quenching of the UV fluorescence at 429 nm. The polymeric film is preferably used as support for a photographic material, preferably a color negative or color reversal photographic material.Type: GrantFiled: March 30, 1998Date of Patent: October 20, 1998Assignee: Agfa-Gevaert, N.V.Inventors: August Marien, Jorg Hagemann, Beate Weber
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Patent number: 5736308Abstract: TiO.sub.2 containing iron oxide having an average primary particle diameter of 1 to 100 nm and an iron oxide content of 0.5 to 20 wt. % is suitable as a UV absorber for photographic materials.Type: GrantFiled: April 1, 1997Date of Patent: April 7, 1998Assignee: Agfa-Gevaert AGInventors: Arno Schmuck, Jorg Hagemann
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Patent number: 5726004Abstract: A photographic material having at least one photosensitive silver halide emulsion layer and at least one non-photosensitive layer on a support, which material contains at least one compound of the formula (I) in at least one of the layers, ##STR1## in which R.sub.1 to R.sub.5, L, m and n have the meaning stated in the specification and PUG means a photographically active group, may be produced in thinner layers.Type: GrantFiled: September 18, 1996Date of Patent: March 10, 1998Assignee: Agfa-GevaertInventors: Beate Weber, Jorg Hagemann
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Patent number: 5707786Abstract: By means of a development intensification process for processing color photographic silver halide materials, the silver halide emulsions of which contain more than 90 mol. % of AgCl and less than 0.8 g of silver halide per m.sup.2 (stated as the equivalent quantity of AgNO.sub.3), short processing times accompanied by stable replenishment rates are obtained if at least one compound of the formulae (I), (II) or (III) is used as the developer substance in a quantity of 0.002 to 0.04 mol/l of developer solution ##STR1## in which R.sub.1 to R.sub.3, R.sub.10 to R.sub.17, R.sub.21 to R.sub.23, m, n and Y have the meaning stated in the specification.Type: GrantFiled: July 8, 1996Date of Patent: January 13, 1998Assignee: Agfa-GevaertInventors: Arno Schmuck, Jorg Hagemann, Norman Klaunzer
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Patent number: 5674668Abstract: A color photographic recording material having at least one silver halide emulsion layer, which material contains in at least one of its layers a combination of at least one UV absorber of the formula I and at least one low molecular weight or polymeric oil formula containing acid groups, for example of the formula T--?R.sup.21 --(Q.sup.1).sub.p !.sub.q --X.sup.21 --OH (II), exhibits improved absorption for UV light. ##STR1## In the formula I: R.sup.1 and R.sup.3 mean H, halogen, hydroxy, mercapto, alkyl, aryl, alkoxy, aryloxy, acyloxy, alkylthio, arylthio, --NR.sup.5 --R.sup.6, alkoxycarbonyl, carbamoyl or sulphamoyl;R.sup.2 means H, hydroxy, halogen or alkyl;R.sup.4 means alkyl, alkoxy, alkylthio, aryloxy, arylthio or a residue of the formula ##STR2## R.sup.5 means H, alkyl or aryl; R.sup.6 means H, alkyl, aryl, acyl, alkoxycarbonyl, carbamoyl, sulphamoyl or sulphonyl;m, n and o mean 1, 2, 3 or 4,wherein two or more residues R.sup.1, R.sup.2 and R.sup.3 are identical or different;in the formula II:X.sup.Type: GrantFiled: August 26, 1996Date of Patent: October 7, 1997Assignee: Agfa-GevaertInventors: Jorg Hagemann, Gunter Helling, Beate Weber
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Patent number: 5508157Abstract: A color photographic silver halide material in which at least one coupler is dissolved or dispersed in a coupler solvent corresponding to the following formula: ##STR1## in which R.sub.1 is alkyl, alkenyl, cycloalkyl or cycloalkenyl,R.sub.2 and R.sub.3 are alkylene or alkenylene,X is CO, NHCO or SO.sub.2,n is 0 or 1 andl, m are numbers of 1 to 5,is distinguished by steep gradation and improved maximum density.Type: GrantFiled: May 30, 1995Date of Patent: April 16, 1996Assignee: Agfa-Gevaert AGInventors: Beate Weber, Markus Geiger, Gunter Helling, Jorg Hagemann
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Patent number: 5466569Abstract: A color photographic material, at least one layer of which contains a compound of the formula (I) ##STR1## in which X means --NH--, --NR-- or --O--,R means alkyl, cycloalkyl or aryl,R.sub.1 means a chemical bond or a divalent bridging member,R.sub.2 and R.sub.3 mean alkyl, alkoxy, alkenyl, cycloalkyl, aryl or aryloxy, or two residues R.sub.2 or R.sub.3 mean the remaining atoms of a benzene ring condensed with the phenyl residue andm and n mean 0 to 3, wherein all alkyl, alkoxy, cycloalkyl, alkenyl, aryl and aryloxy residues may be further substituted and in each of the two phenyl residues a residue R.sub.1, R.sub.2 or R.sub.3 is in para position relative to the oxygen atom, is characterized by improved dye stability after processing.Type: GrantFiled: June 9, 1994Date of Patent: November 14, 1995Assignee: Agfa-Gevaert AGInventors: Beate Weber, Jorg Hagemann, Markus Geiger
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Patent number: 5441855Abstract: A color photographic material which contains in at least one blue-sensitive layer a yellow coupler and a compound of the formula (I) ##STR1## in which R.sub.1 means hydrogen or alkyl,R.sub.2 means hydrogen or alkyl,R.sub.3 means hydrogen or alkyl,1 means 1 to 20X ##STR2## or cycloalkene, R.sub.4 means hydrogen or alkyl,R.sub.5 means hydrogen or alkyl andn means 1 to 6,shows improved light-stability of the yellow dye obtained from said yellow coupler by exposure and processing.Type: GrantFiled: June 9, 1994Date of Patent: August 15, 1995Assignee: Agfa-Gevaert AGInventors: Beate Weber, Jorg Hagemann, Gunter Helling, Markus Geiger
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Patent number: 5441861Abstract: A color photographic material with at least one silver halide emulsion layer which contains a color coupler distributed in a polymeric oil former and at least one compound of the formula (I) ##STR1## in which R means alkyl, cycloalkyl, alkenyl, aryl, acyl, alkylsulphonyl or arylsulphonyl,R.sub.1 means a chemical bond or a divalent bridging member,R.sub.2 and R.sub.3 mean alkyl, alkoxy, alkenyl, cycloalkyl, aryl or aryloxy or two residues R.sub.2 or R.sub.3 the remaining atoms of a benzene ring condensed with the phenyl residue andm and n mean 0 to 3, wherein all alkyl, alkoxy, cycloalkyl, alkenyl, aryl, aryloxy and acyl residues may be further substituted,is characterized by improved color stability.Type: GrantFiled: August 26, 1993Date of Patent: August 15, 1995Assignee: Agfa-Gevaert ABInventors: Beate Weber, Gunter Helling, Klaus Walz, Markus Geiger, Kaspar Wingender, Jorg Hagemann
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Patent number: 5436125Abstract: In a color photographic recording material, the light stability of a dye image produced from a magenta coupler and stabilized with a compound of the formula I may be further improved by additionally using a compound of one of the formulae II and III. ##STR1## In the formulae I, II and III, R.sup.1, R.sup.21, R.sup.25, R.sup.31, R.sup.34 mean H, alkyl, aryl, acyl;R.sup.2, R.sup.22, R.sup.32 mean --OR.sup.1 alkyl, aryl, dialkylamino, acylamino, sulphonamido, acyl, sulphonyl;R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.23, R.sup.24, R.sup.33 mean H, halogen or a residue as R.sup.2 ;m, n, q mean 0, 1, 2 or 3;o means 0, 1 or 2;p means a positive integer;A means alkylene, --O--, --S--, --NR.sup.25 --, --SO.sub.2 ;B means alkylene, --O--, --S--, --NR.sup.34 --, --SO.sub.2 --;wherein two adjacent residues --OR.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 may together complete a 5- to 8-membered ring, two adjacent residues --OR.sup.21, R.sup.23, R.sup.22 or --OR.sup.21, R.sup.24, R.sup.22, or --OR.sup.31, R.sup.Type: GrantFiled: July 28, 1994Date of Patent: July 25, 1995Assignee: Agfa-Gevaert AGInventors: Jorg Hagemann, Beate Weber
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Patent number: 5426022Abstract: Compounds of Formula I are suitable as light stabilizers for the image dyes produced during chromogenic development from magenta couplers or yellow couplers ##STR1## In Formula I: R.sup.1, R.sup.2, R.sup.3 signify alkyl, aryl;R.sup.4, R.sup.5, R.sup.6 signify H, alkyl, alkoxy, aryloxy, acyloxy, ##STR2## alkoxycarbonyl, carbamoyl; R.sup.7 signifies H, alkyl, aryl;R.sup.8 signifies alkyl, aryl, acyl;X signifies a single bond, --O--, --NH--.Type: GrantFiled: July 5, 1994Date of Patent: June 20, 1995Assignee: Agfa-Gevaert AGInventor: Jorg Hagemann
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Patent number: 5362615Abstract: A color-photographic recording material comprising at least one red-sensitive silver halide emulsion layer associated with a cyan coupler, at least one green-sensitive silver halide emulsion layer associated with a magenta coupler, and at least one blue-sensitive silver halide emulsion layer associated with a yellow coupler, at least one layer of the material containing a hydroquinone diether compound having the following formula I and optionally at least one compound having one of the formulae II, III, IV, V, SA and SB given in the description, characterized by increased light stability of the image colorants produced during chromogenic development, ##STR1## In the formula: R.sup.1 denotes alkyl, cycloalkyl or aryl;R.sup.2 denotes H, alkyl;R.sup.3, R.sup.4 denote H, alkyl, cycloalkyl, aryl, halogen, alkoxy, aroxy, acyloxy, alkylthio, arylthio, acyl, sulphonyl, sulphamoyl, acylamino, sulphonylamino, nitro;R.sup.5 denotes H, acyl, alkyl;X denotes --O-- or --NR.sup.6 --;R.sup.Type: GrantFiled: August 20, 1993Date of Patent: November 8, 1994Assignee: Agfa AGInventors: Jorg Hagemann, Ralf Weimann, Erich Wolff, Johannes Sobel
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Patent number: 5340709Abstract: Compounds of Formula I are suitable as light stabilizers for the image dyes produced by chromogenic development from pyrazoloazole couplers ##STR1## In Formula I, R.sup.1 represents H, a group that can be split off under alkaline conditions, alkyl or aryl;R.sup.2 represents --OH, alkyl, aryl, alkoxy or ##STR2## R.sup.3, R.sup.4, R.sup.5 and R.sup.6 represent H, --OH, --COOH, --SO.sub.3 H, --SO.sub.2 H, alkyl, aryl, alkoxy, sulphonyl, sulphamoyl, acylamino or ##STR3## at least one of the groups R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 being a group of the formula ##STR4## A represents alkylene with 1-6 C atoms; n represents 0 or 1,R.sup.7 represents H or alkyl, optionally substituted alkyl,R.sup.8 represents optionally substituted alkyl, cycloalkyl or aryl with 4-20 C atoms;R.sup.1 and R.sup.3 can form a 5- or 6-membered ring, in which case R.sup.2 =--OH or alkoy;R.sup.2 and R.sup.4 can form a 5- or 6-membered carbocyclic ring.Type: GrantFiled: March 10, 1993Date of Patent: August 23, 1994Assignee: AGFA-Gevaert AGInventors: Jorg Hagemann, Gunter Helling
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Patent number: 5310643Abstract: Compounds corresponding to Formula I are suitable as light stabilizers for the image dyes produced from colour couplers by chromogenic development. They are also suitable as oil formers for the colour couplers. In a colour photographic recording material, they are preferably used in combination with a pyrazoloazole coupler and associated with a light-sensitive silver halide emulsion layer. ##STR1## In Formula I, R.sup.1 denotes H, a group which can be split off under alkaline conditions, alkyl or aryl;R.sup.2 denotes OH, alkyl, aryl, alkoxy or ##STR2## R.sup.3, R.sup.4, R.sup.5 and R.sup.6 denote H, OH, COOH, SO.sub.3 H, SO.sub.2 H, alkyl, aryl, alkoxy, sulphonyl, sulphamoyl, acylamino or ##STR3## and at least one of the groups R.sup.2, R.sup.3, R.sup.4 R.sup.5 and R.sup.6 is a group of the formula ##STR4## A denotes an alkylene group having 1-6 carbon atoms, n stands for 0 or 1,R.sup.7 denotes H or an optionally substituted alkyl group,R.sup.Type: GrantFiled: October 28, 1992Date of Patent: May 10, 1994Assignee: Agfa Gevaert AktiangesellschaftInventors: Gunter Helling, Jorg Hagemann