Patents by Inventor Franz Moll
Franz Moll 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).
-
Patent number: 5009990Abstract: A photographic recording material which has at least one silver halide emulsion layer containing gelatine, at least one protective layer and at least one hardening layer and in which the protective layer is further removed from the layer support than any silver halide emulsion layer and the hardening layer is further removed from the layer support than any other layer and contains an effective quantity of at least one instant hardener will have improved stability in storage under moist, warm conditions if the protective layer contains an effective quantity of at least one azaindene.Type: GrantFiled: November 20, 1989Date of Patent: April 23, 1991Assignee: Agfa-Gevaert AktiengesellschaftInventors: Rainer Scheerer, Franz Moll
-
Patent number: 4992362Abstract: The production of a photosensitive silver halide emulsion by precipitation of the silver halide in the presence of gelatine, flocculation and washing of the silver halide precipitated in the presence of the gelatine and redispersion with addition of more gelatine, precipitation being carried out in the presence of a gelatine having a gold number of at most 10 .mu.mol/g gelatine and a cysteine content of at most 6 ppm and redispersion being carried out with a gelatine having a gold number of at least 23 .mu.mol/g gelatine, leads to an emulsion of uniform grain distribution in which undesirably high fogging is avoided.Type: GrantFiled: August 4, 1989Date of Patent: February 12, 1991Assignee: AGFA Gevaert AktiengesellschaftInventors: Franz Moll, Bruno Mucke, Klaus Wagner, Herbert Gareis, Wolfgang Graesser, Peter Koepff
-
Patent number: 4990440Abstract: The sensitivity/fog ratio can be improved by using photographic silver halide emulsions containing gelatine which has a cysteine content of less than 10 ppm and a gold number of .gtoreq.23 .mu.mol/g.Type: GrantFiled: August 4, 1989Date of Patent: February 5, 1991Assignee: Agfa-Gevaert AktiengessellschaftInventors: Franz Moll, Bruno Mucke, Walter Patzold, Klaus Wagner
-
Patent number: 4906558Abstract: Color photographic silver halide material in which at least one layer contains a silver halide emulsion with 95 to 100 mol % of chloride which has been optimally ripened with a combination of at least one sulphur ripening body and at least one compound of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 denote, independently of one another, hydrogen or alkyl, and X.sup..crclbar. denotes an anion, combines excellent sensitivity with low fog and steep gradation, particularly in the threshold and shoulder region.Type: GrantFiled: October 14, 1988Date of Patent: March 6, 1990Assignee: AGFA-Gevaert AktiengesellschaftInventors: Bruno Mucke, Franz Moll
-
Patent number: 4429038Abstract: A yellow silver sol containing a binder is concentrated by flocculation in the presence of a calcium-free gelatin, a water-soluble chloride being added to the flocculation and/or after the redispersion.Type: GrantFiled: July 26, 1982Date of Patent: January 31, 1984Assignee: Agfa Gevaert AktiengesellschaftInventors: Franz Moll, Ingeborg Holl
-
Patent number: 4397942Abstract: Compounds of the formula ##STR1## are suitable for the stabilization of the latent image in silver halide photographic materials.Type: GrantFiled: October 23, 1981Date of Patent: August 9, 1983Assignee: Agfa-Gevaert AktiengesellschaftInventors: Anita von Konig, Franz Moll, Hermann Oediger
-
Patent number: 4379837Abstract: Silver halide emulsions are prepared by precipitating a silver halide emulsion I on a more sparingly soluble silver halide emulsion II in the presence of a silver halide solvent wherein the emulsion I has been prepared in the presence of a compound inhibiting grain growth.Type: GrantFiled: May 20, 1981Date of Patent: April 12, 1983Assignee: Agfa-Gevaert AktiengesellschaftInventors: Otto Lapp, Harald von Rintelen, Franz Moll, Lothar Endres
-
Patent number: 4358531Abstract: Compounds of the formula ##STR1## wherein the substituents have the meaning indicated in the specification are suitable as latent image stabilizer in silver halide materials.Type: GrantFiled: October 9, 1981Date of Patent: November 9, 1982Assignee: Agfa-Gevaert AktiengesellschaftInventors: Anita von Konig, Franz Moll, Lothar Rosenhahn
-
Patent number: 4276372Abstract: A color photographic material is provided in which the interimage effect is adjusted to provide optimum color reproduction. The photographic material comprises an emulsion referred to as type I emulsion, which releases an inhibitor on development and another emulsion with underripened grains which are more soluble than those of the type I emulsion.Type: GrantFiled: February 11, 1980Date of Patent: June 30, 1981Assignee: AGFA-Gevaert, A.G.Inventors: Ubbo Wernicke, Reinhart Matejec, Franz Moll
-
Patent number: 4210714Abstract: Process for the preparation of silver images by imagewise exposure of a photographic material comprising at least one light-sensitive silver halide emulsion layer and treatment of the material with a developer composition, wherein the improvement comprises the development is carried out in the presence of 3-mercapto-5-(2-furyl)-1,2,4-triazole. The 3-mercapto-5-(2-furyl)-1,2,4-triazole decreases the fog during development, and when this is the first development in a black-and-white or color reversal process, increases the reversal silver or color density.Type: GrantFiled: March 15, 1978Date of Patent: July 1, 1980Assignee: AGFA-Gevaert, A.G.Inventors: Heinrich Odenwalder, Anita von Konig, Franz Moll, Walter Patzold, Lothar Rosenhahn, Friedhelm Sommer
-
Patent number: 4202695Abstract: Fine-grain silver halide emulsions of the Lippmann-type are described which comprise derivatives of heterocyclic mercaptans corresponding to the formulae: ##STR1## wherein: each of Z.sub.1 and Z.sub.2 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring system,n is 0 or 1,X is --CO-- or --CS--,R is an alkyl group or an aryl group, andY is --CO--, --COO--, --CS--, --SO.sub.2 --, --CON(R.sub.1)-- or --CSN(R.sub.1)--, R.sub.1 being hydrogen, alkyl or aryl.Both in reversal and negative processing sharpness of fine detail is improved and the distortion of image-details is reduced. Upon reversal processing yellow staining is also reduced.Type: GrantFiled: January 30, 1975Date of Patent: May 13, 1980Assignee: AGFA-GEVAERT N.V.Inventors: Herman A. Philippaerts, Robert J. Pollet, Wolfgang Muller-Bardorff, Wilhelm Saleck, Anita von Konig, Walter Gauss, Franz Moll, Theofiel H. Ghys
-
Patent number: 4118228Abstract: Photographic panchromatic black-and-white silver halide recording material having two silver halide emulsion layers wherein a layer, called hereinafter first layer, has a panchromatic sensitivity and another layer, called hereinafter second layer, has a blue sensitivity, which is, when determined on comparable wedge images, at density 0.3 at least 0.6 log I.t units higher than its separately considered green and red sensitivity, wherein for the determination of the sensitivities a blue filter, a green filter, and a red filter as characterized in FIG. 1 are used, both said layers having a substantially identical threshold sensitivity to blue light and the spectral sensitivity of this material at 650 nm being at least 0.8 powers of ten lower than at 620 nm, the sensitivity beyond 650 nm diminishing even further.Type: GrantFiled: July 22, 1976Date of Patent: October 3, 1978Assignee: Agfa-Gevaert N.V.Inventors: Hans Josephus Corluy, Franz Moll, Herbert Muller, Marie Hase
-
Patent number: 4094811Abstract: The process for the preparation of silver dispersions for antihalation and filter layers in photographic material by reducing silver salts in the presence of a heterocyclic 5-membered or 6-membered compound which has a ##STR1## group in its 1,2,3-position and a 2-aminoalkyl or 2-hydroxyalkyl group or an alkylene chain which is linked through the 1- and 2-position. The process provides neutral grey silver dispersions without using cadmium salts, for the reduction of the silver salts.Type: GrantFiled: December 21, 1976Date of Patent: June 13, 1978Assignee: Agfa-Gevaert AktiengesellschaftInventors: Artur Botta, Anita VON Konig, Franz Moll, Christian Rasp, Johannes Hartl
-
Patent number: 4052215Abstract: A color photographic material comprising at least one light-sensitive silver halide emulsion layer having preferably a non-diffusing color coupler associated to it and at least one non-lightsensitive binder layer containing a colloidal silver dispersion provides less contact fog and a better color reproduction if the non-lightsensitive binder layer containing the colloidal silver dispersion contains also a soluble iodide, particularly sodium, potassium or ammonium iodide. Alternatively the soluble iodide may also be contained in a non-lightsensitive binder layer adjacent that binder layer which contains the silver dispersion.Type: GrantFiled: November 8, 1976Date of Patent: October 4, 1977Assignee: AGFA-Gevaert, A.G.Inventors: Franz Moll, Lothar Rosenhahn
-
Patent number: 3984246Abstract: Photographic materials containing in at least one photographic layer as antihalation- or filter-dyes mono-, tri- or pentamethineoxonoles of 1-sulfolanyl pyrazolones, which dyes can be easily decolorized and washed out on treatment of the photographic material in photographic processing.Type: GrantFiled: November 4, 1975Date of Patent: October 5, 1976Assignee: AGFA-Gevaert, A.G.Inventors: Hans Ohlschlager, Oskar Riester, Franz Moll