With Means To Compress Or Compact Solid Sorbent Bed Patents (Class 96/137)
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Patent number: 5622544Abstract: A desiccant cartridge for an air dryer of the type used for compressed air supply systems. The desiccant cartridge incorporates an internally disposed particulate filter element which functions to provide particulate filtration for air coming into the desiccant cartridge. The filter element further acts to apply a compressive loading against internal components within the desiccant cartridge insuring that these parts are firmly coupled and providing sealing engagement between components despite manufacturing tolerance variations in the component parts.Type: GrantFiled: July 5, 1995Date of Patent: April 22, 1997Assignee: AlliedSignal Truck Brake Systems CompanyInventors: Dennis R. Shamine, Larry E. Dienes
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Patent number: 5620507Abstract: A canister for containing a bed of particles, for example sorbent particles, which includes a loading device for applying a predetermined compressive load to the bed of particles and an adjusting device for automatically adjusting the loading device to maintain substantially the predetermined compressive load. The adjusting device functions in conjunction with the pressure of an operating fluid in the canister.Type: GrantFiled: June 26, 1995Date of Patent: April 15, 1997Assignee: Normalair-Garrett (Holdings) LimitedInventors: Terence Oborne, David Peacey, John Rogers
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Patent number: 5549736Abstract: A modular, pneumatically parallel arrangement of sieve beds for a pressure swing adsorption gas concentration apparatus is described. A manifold head structure having a plurality of ports, channels and components which are connected together forms the pneumatic circuit for the pressure swing adsorption process. The manifold structures are arranged so as to be simply connected together to modularly form a pressure swing adsorption apparatus of the desired capacity.Type: GrantFiled: June 30, 1995Date of Patent: August 27, 1996Assignee: Litton Systems, Inc.Inventors: Kelly M. Coffield, Dean A. Cantrill, Kevin G. McCulloh, Sammy K. Mickelson
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Patent number: 5501723Abstract: An activated carbon filter is provided for venting a fuel tank. The activated carbon filter consists of a housing which accommodates activated carbon packets. Via lines, the housing is connected, on the one hand, by way of a first connection with the fuel tank, and on the other hand, by way of a second connection with the intake pipe, particularly that of a combustion engine. A third connection connects the housing with the atmosphere. The housing has a first partition which extends between the connection for the atmosphere and the connection for the tank. At least one other partition is provided which forms at least one other chamber. Each of the chambers is filled with activated carbon.Type: GrantFiled: June 15, 1994Date of Patent: March 26, 1996Assignee: Filterwerk Mann & Hummel GmbHInventors: Heinz Andress, Karl-Ernst Hummel, Arthur Klotz, Thomas Schermuly
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Patent number: 5427609Abstract: A device (10) for removing contaminants from truck air systems or the like includes an assembly including a desiccant canister (100), a carrier (46), and a bottom closure (28) vertically removable in a passage (14) of a collar (12) mounted to the truck. The carrier (46) includes a horizontal plate (48) which divides the passage (14) into a coalescing chamber having a horizontally orientated, tubular coalescing filter (98) extending vertically above and diametrically over the sump including an electrically actuated purge valve (42) of the bottom closure (28). Air is directed vertically downward from the filter (98) by vertical legs (62) extending down from the horizontal plate (48) and on opposite sides of the filter (98). A follower plate (118) is biased in the canister (100) against the desiccant beads (116) by a wave spring (140) sandwiched thereagainst by a slideable retainer (142) fixed in the side wall (104) of the canister (100).Type: GrantFiled: September 14, 1993Date of Patent: June 27, 1995Assignee: Horton Industries, Inc.Inventors: Norbert P. Zoglman, Daniel J. Fitzsimmons, Brian J. Larson
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Patent number: 5409526Abstract: An apparatus for supplying high purity gas comprises a cylinder having a valve with two internal ports. One internal port is used to fill the cylinder while the other is fitted with a unit which removes particulates and impurities from the gas as it leaves the cylinder. The unit comprises an inlet, a first filter for removing coarse particulates, layers of adsorbent and absorbent for removing impurities, and a second filter for removing fine particulates. The purified gas leaves the cylinder via the valve and after passing through a regulator, a flow control device and various lengths of tubing passes through a conventional purifier immediately upstream of the point of use. The apparatus reduces the load on the purifier and hence decreases the frequency at which the purifier has to be recharged. Potentially the apparatus could obviate the need for the purifier altogether.Type: GrantFiled: October 5, 1993Date of Patent: April 25, 1995Assignee: Air Products and Chemicals, Inc.Inventors: Dao-Hong Zheng, John Irven, Alan J. F. Paterson, Daniel C. Tregear
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Patent number: 5338340Abstract: An odor-removing filter approaching the carbon-particle loading of a filled filter may be formed by spraying or roll coating the adhesive against one or more faces of a porous, fibrous, air-permeable mat, depositing carbon particles or other odor-removing particles of a size to compliment the void size of the mat on the adhesive coated face or faces of the mat and then driving the particles into the mat and thereafter curing the adhesive to lock the particles into the mat. The adhesive bond of the particles to the mat is improved by working the particles against the adhesive-coated fibers. An overspray of an adhesive may also be utilized to further improve the retention of the particles. So-called "clean filters" may be produced according to the method disclosed, wherein a white, fibrous mat has carbon particles loaded on one face while the opposite face appears white or "clean". An indicator filter notifying the user when the filter becomes grease laden may also be formed following the methods used herein.Type: GrantFiled: June 30, 1993Date of Patent: August 16, 1994Assignee: D-Mark, Inc.Inventors: James W. Kasmark, Jr., Joseph B. Brown, deceased
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Patent number: 4138266Abstract: A method of spectrally sensitizing a photographic light-sensitive emulsion where a water-soluble solution, prepared by dissolving a methine dye having at least one water-soluble group in water in the presence of a "Red Shift Compound", as hereinafter defined, is added to a photographic light-sensitive emulsion to provide a photographic light-sensitive emulsion spectrally sensitized with increased sensitizing efficiency and with reduced fog. The disadvantages caused by the use of high organic solvent contents are avoided and photographic light-sensitive emulsions suitable for high-speed coating are obtained.Type: GrantFiled: February 3, 1977Date of Patent: February 6, 1979Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Yuji Mihara, Tadao Shishido, Keiichi Adachi
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Patent number: 4121935Abstract: A lith-type silver halide photographic light-sensitive material for forming halftone dot images is disclosed which contains a sensitizing dye represented by the following general formula: ##STR1## WHEREIN Z.sub.1 is an atomic group necessary for forming a naphthothiazole ring, Z.sub.2 is an atomic group necessary for forming a member selected from a group consisting of substituted or unsubstituted, benzothiazole, benzoselenazole, naphthothiazole and naphthoselenazole nucleus, R.sub.1 and R.sub.2 are respectively a substituted or unsubstituted alkyl group, X.sup..theta. is an anion, and n is a positive integer of 1 or 2 with the proviso that when the dye is an inner salt, n is 1.Type: GrantFiled: August 8, 1977Date of Patent: October 24, 1978Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yoshio Nishina, Teiji Habu, Tomio Nakajima, Akio Oshima, Eiichi Sakamoto, Noboru Fujimori, Kiyomitsu Mine, Hiroo Toya
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Patent number: 4110116Abstract: New cyanine dyes derived from di-halogen-benzoxazoles and benzothiazoles are desensitizers for silver halide negative emulsions and useful electron acceptor spectral sensitizers for direct positive silver halide emulsions.Type: GrantFiled: March 16, 1977Date of Patent: August 29, 1978Assignee: Minnesota Mining and Manufacturing CompanyInventors: Paolo Beretta, Luigi Valbusa
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Patent number: 4108667Abstract: The invention relates to methine dyes and photographic silver halide compositions and film elements comprising methine dyes which contain 9,9a-dihydropyrido-[1,2-a]indolium nuclei, benzo[a]quinolizinium nuclei or 6,7-dihydrobenzo[a]quinolizinium nuclei.Type: GrantFiled: September 16, 1976Date of Patent: August 22, 1978Assignee: Eastman Kodak CompanyInventor: Derek D. Chapman
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Patent number: 4040825Abstract: The present invention relates to light-sensitive photographic material with a light-sensitive heavy metal compound, e.g. a silver halide, and a spectral sensitizer. The spectral sensitizer is a compound in which the radicals of a sensitizing dyestuff are covalently bonded to amino, imino, hydroxyl, mercapto, carboxylic acid or carboxylic acid amide groups of a natural hydrophilic colloid, preferably gelatin.The invention also relates to new sensitizing dyes which are dinuclear cyanine dyes or merocyanine dyes which have attached either to a heterocyclic nucleus of the dye or to its methine chain a group which is reactive with a hydrophilic colloid.Type: GrantFiled: March 11, 1976Date of Patent: August 9, 1977Assignee: Ciba-Geigy AGInventors: Rolf Steiger, Jean-Francois Reber, Aaron David Ezekiel, Geoffrey Ernest Ficken
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Patent number: 4039335Abstract: A silver halide photographic emulsion spectrally sensitized with a combination of sensitizing dyes consisting essentially of at least one sensitizing dye represented by the following general formula [I] and at least one sensitizing dye represented by the following general formula [II] in supersensitizing amounts: ##STR1## wherein R.sup.1 and R.sup.2 each is an alkyl group, R.sup.3 is an alkyl group, X.sub.1 is an acidic anion, m is 1 or 2, and m is 1 when the dye forms an intramolecular salt (betaine-like structure). ##STR2## WHEREIN Z.sup.1 is a sulfur atom or a selenium atom, Z.sup.2 is an atomic group necessary to form a benzothiazole ring, a benzoselenazole ring, a naphtho[1,2-d]thiazole ring or a naphtho[1,2-d]selenazole ring, R.sup.4 and R.sup.5 is an alkyl group, R.sup.6 is an alkyl group, a phenyl group, an aralkyl group, a furyl group or a thienyl group, X.sub.2 is an acidic anion, n is 1 or 2, and n is 1 when the dye forms an intramolecular salt (betaine-like structure).Type: GrantFiled: October 29, 1976Date of Patent: August 2, 1977Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Haruo Takei, Akira Sato, Atsuo Iwamoto, Jun Hayashi
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Patent number: 4028115Abstract: A spectrally sensitized silver halide photographic emulsion containing, in combination, four carbocyanine sensitizing dyes.Type: GrantFiled: August 26, 1976Date of Patent: June 7, 1977Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Haruo Takei, Akira Sato, Atsuo Iwamoto, Jun Hayashi
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Patent number: 4026707Abstract: Silver halide supersensitized with a mixture of naphthoxazole and benzoxazole carbocyanine dyes.Type: GrantFiled: August 12, 1976Date of Patent: May 31, 1977Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tadahiko Obikawa, Shigemasa Itoh
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Patent number: 4025347Abstract: New cyanine dyes, comprising at least one of the following nuclei (or derivatives thereof):1. 2,3,3-trimethyl-5-phenyl-sulfonyl-indolenine;2. 2,3,3-trimethyl-5-benzoyl-indolenine;3. 1-aryl or alkyl-2-phenyl-5-phenyl-sulfonyl-indole;4. 1-aryl or alkyl-2-phenyl-5-benzoyl-indole,Are desensitizers for silver halide negative emulsions and useful electron acceptor spectral sensitizers for direct positive silver halide emulsions.Type: GrantFiled: June 12, 1974Date of Patent: May 24, 1977Assignee: Minnesota Mining and Manufacturing CompanyInventors: Paolo Beretta, Luigi Valbusa
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Patent number: 4006025Abstract: Colloidally stable dispersions of a spectral sensitizing dye are formed directly in water without the use of an organic solvent. The process of the invention involves mixing the dye particles with water to form a slurry and then homogenizing or milling the slurry at an elevated temperature in the presence of a surfactant to form finely divided particles uniformly dispersed in the water.Type: GrantFiled: June 6, 1975Date of Patent: February 1, 1977Assignee: Polaroid CorporationInventors: Thomas F. Swank, Richard Waack
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Patent number: 3988513Abstract: A silver halide emulsion for recording electron rays which comprises a silver halide emulsion containing silver halide grains having an average particle size below 0.2 microns and at least one sensitizing dye represented by the following formula: ##SPC1##Wherein Z.sub.1 represents a group of atoms necessary to form a benzene ring or naphthalene ring, said benzene or naphthalene ring being substituted or unsubstituted, Z.sub.2 represents a group of atoms necessary to form a 5-member or 6-member heterocyclic nucleus, R.sub.1, R.sub.2 and R.sub.3 each represents an alkyl group, a substituted alkyl group or an aryl group, L.sub.1, L.sub.2 and L.sub.3 each represents a methine group or a substituted methine group, said R.sub.1 and L.sub.1, R.sub.2 and L.sub.1 or R.sub.3 and L.sub.3 may be linked by an alkylene group, m and n each represents 1 or 2, X represents an acid anion, and p represents 1 or 2, is disclosed.Type: GrantFiled: March 20, 1975Date of Patent: October 26, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Junichi Matsuyama, Akira Sato, Yosuke Nakajima, Yoshiyuki Nakazawa
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Patent number: 3980481Abstract: Direct-positive silver halide emulsions comprising fogged silver halide grains and an electron acceptor are described wherein the emulsion is spectrally sensitized by means of 2-aryl-indolocarbocyanines. The combination of electron acceptors and these spectral sensitizers provides super-sensitizing effects that are not impaired by the presence of color couplers.Type: GrantFiled: January 11, 1974Date of Patent: September 14, 1976Assignee: AFGA-GEVAERT N.V.Inventors: Theofiel Hubert Ghys, Willy Joseph Vanassche, Herman Alberik Pattyn
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Patent number: 3977882Abstract: A silver halide photographic emulsion which is spectrally sensitized so that it has a maximum sensitivity wave length within the region of 580-640 nm, characterized by containing in a super sensitizing amount the combination of at least one carbocyanine dye represented by the general formula (I) and at least one of the dyes selected from the group consisting of dyes represented by the general formula (II): ##EQU1## WHEREIN Z.sub.1 represents the grouping necessary for the formation of .beta.-naphthothiazole or .beta.-naphthoselenazole ring, Z.sub.2 represents the grouping necessary for the formation of benzoxazole ring, A.sub.1 represents a hydrogen atom, an alkyl radical or an aryl radical, R.sub.1 represents an alkyl group and R.sub.2 represents a hydroxyalkyl group, a carboxyalkyl group or an alkyl group substituted with a sulfo group, X.sub.1 represents an acid anion group, an l is 1 or 2, the dye forming an intramolecular salt when l is 1: ##EQU2## WHEREIN Z.sub.3 and Z.sub.Type: GrantFiled: July 17, 1975Date of Patent: August 31, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Akira Sato
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Patent number: 3977883Abstract: A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at least one sensitizing dye of the following general formula (I) ##EQU1## WHEREIN Z.sub.1 and Z.sub.2 each represents an atomic group required to form a quinoline ring; R.sub.1 and R.sub.2 each represents an aliphatic group, with at least one of R.sub.1 and R.sub.2 being a hydroxyalkyl group, an alkyl group containing a carboxyl group or an alkyl group containing a sulfo group; X.sub.1 is an acid anion; and m is 1 or 2, and when m is 1 the dye forms an intramolecular salt and at least one sensitizing dye of the following general formula (II) ##EQU2## WHEREIN Z.sub.3 represents an atomic group required to form a benzimidazole ring, a benzoxazole ring or a .beta.-naphthoxazole ring; Z.sub.4 represents an atomic group required to form a benzothiazole ring, a benzoselenazole ring, a .beta.-naphthothiazole ring or a .beta.-naphthoselenazole ring; R.sub.3 and R.sub.Type: GrantFiled: December 6, 1974Date of Patent: August 31, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Haruo Takei, Akira Sato, Atsuo Iwamoto
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Patent number: 3973969Abstract: Silver halide photographic emulsions are supersensitized by a combination of at least one sensitizing dye represent by following general formula (I): ##EQU1## And at least one sensitizing dye represented by following general formula (II): ##SPC1##Specific moieties given in the above formulae are identified in the specification.Type: GrantFiled: May 2, 1975Date of Patent: August 10, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Masanao Hinata, Hirotetu Kato, Akiro Sato, Akira Ogawa
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Fogged, direct-positive silver halide emulsion containing carbocyanine dye having indolenine nucleus
Patent number: 3970461Abstract: A direct positive silver halide photographic emulsion containing a dye represented by the following general formula: ##SPC1##Wherein R and R.sub.1 are selected from the first group consisting of alkyl, allyl, substituted alkyl, aryl, and substituted aryl groups, at least one of the R and R.sub.1 being an alkyl group substituted with a carboxyl or sulfo radical; R.sub.2 and R.sub.3 are selected from the second group consisting of alkyl, aralkyl and allyl groups; L.sub.1 is selected from the third group consisting of methine and an atomic group capable of combining with R.sub.1, R.sub.2 or R.sub.3 to form a ring; L.sub.2 is methine; L.sub.3 is selected from the fourth group consisting of methine and an atomic group capable of forming a ring with R.sub.1 or a 3,3-substituent of an indolenine ring at the site near to L.sub.3, L.sub.3, such that a ring may be formed by L.sub.1 and L.sub.Type: GrantFiled: July 6, 1973Date of Patent: July 20, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Masanao Hinata, Akira Sato, Akira Ogawa, Hirotetu Kato -
Patent number: 3967967Abstract: A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at least two carbocyanine dyes having structures hereinafter defined.Type: GrantFiled: December 6, 1974Date of Patent: July 6, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Haruo Takei, Akira Sato, Atsuo Iwamoto
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Patent number: 3966477Abstract: A silver halide photographic emulsion containing, in combination, supersensitizing amounts of at last two carbocyanine sensitizing dyes as hereinafter defined.Type: GrantFiled: December 6, 1974Date of Patent: June 29, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Haruo Takei, Tadashi Ikeda, Akira Ogawa, Akira Sato, Atsuo Iwamoto
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Patent number: 3955996Abstract: A method for spectrally sensitizing a photographic light-sensitive emulsion, which comprises dissolving a photographic spectrally sensitizing dye having an amidinium ion auxochrome in an organic solvent containing a substantially water-free acid having a pKa not exceeding about 5, and adding this dye-containing acid-organic solvent solution to a light-sensitive emulsion.Type: GrantFiled: November 15, 1974Date of Patent: May 11, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Masanaga Ohki, Haruo Takei, Yuji Mihara
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Patent number: 3951666Abstract: A silver halide photographic emulsion containing a supersensitizing amount of the combination of at least one dye represented by the general formula (I) ##SPC1##wherein Z represents the non-metal atoms necessary to form a benzene nucleus; R.sub.0, R.sub.1 and R.sub.2 each represents aliphatic groups, with at least one of R.sub.1 and R.sub.2 representing an alkyl group containing a carboxy group or an alkyl group containing a sulfo group; Y represents a halogen atom; X represents an acid anion; n represents an integer of 1 to 2, with n being 1 when the dye forms an intramolecular salt; and at least one dye represented by the general formula (II) ##EQU1## wherein Z.sub.1 represents the non-metal atoms necessary to form a 5-or 6-membered heterocyclic nucleus; Q represents the atoms necessary to form a rhodanine nucleus, a 2-thio-2,4-imidazolidinedione nucleus, a 2-pyrazoline-5-one nucleus, or a 2-thio-2,4-oxazolidinedione nucleus; R.sub.3 represents an aliphatic group; R.sub.Type: GrantFiled: August 6, 1974Date of Patent: April 20, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanao Hinata, Masanaga Ohki, Haruo Takei, Akira Sato, Tadashi Ikeda
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Patent number: 3947275Abstract: A sensitized gelatino-silver halide emulsion comprising a supersensitizing combination of at least one sensitizing dye represented by general formula I: ##SPC1##wherein R.sub.1, R.sub.2 and R.sub.3 are each a member selected from the group consisting of an alkyl having up to 6 carbon atoms and a substituted alkyl group having up to 6 carbon atoms, at least one of R.sub.1, R.sub.2 and R.sub.3 being a substituted alkyl group having a sulfo group therein; R.sub.4 is a hydrogen atom or forms an alkylene linkage together with R.sub.2 ; Z.sub.1 is an atomic group necessary for completing a benzimidazole nucleus; A.sub.1 and A.sub.2 are each a member selected from the group consisting of a hydrogen atom, a phenyl group, a halogen atom, a carboxyl group, an alkoxy carbonyl group, an alkyl group, an alkoxyl group, a hydroxyl group, a trifluoromethyl group, and a cyano group, A.sub.2 being capable of condensing with A.sub.1 or A.sub.3 to form a benzene nucleus; and A.sub.Type: GrantFiled: November 21, 1973Date of Patent: March 30, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Akira Sato, Akira Ogawa
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Patent number: 3933507Abstract: Heat developable light-sensitive photographic material having a layer which contains a light-sensitive combination of a silver compound substantially insensitive to light, a reducing agent for that silver compound and a polymethine sensitizer. The exposed material is heated so that the silver compound in the exposed areas is reduced and a visible silver image is formed.Type: GrantFiled: August 10, 1972Date of Patent: January 20, 1976Assignee: AGFA-Gevaert, A.G.Inventors: Anita VON Konig, Helmut Kampfer, Eric Maria Brinckmann, Frans Clement Heugebaert
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Patent number: 3933510Abstract: A silver halide photographic emulsion which contains in combination a supersensitizing amount of at least one pseudocyanine sensitizing dye and at least one oxacarbocyanine sensitizing dye.Type: GrantFiled: September 4, 1973Date of Patent: January 20, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Haruo Takei, Akira Sato, Tadashi Ikeda
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Patent number: 3932186Abstract: Improved green-sensitivity is imparted to a photosensitive silver halide emulsion by a benzimidazolothiacarbocyanine dye of the formula: ##SPC1##Wherein R.sup.1 and R.sup.2 are lower alkyl; R.sup.3 is sulfoalkyl or carboxyalkyl each having an alkylene chain of from 1 to 4 carbon atoms inclusive; R.sup.4 is hydrogen, halogen, lower alkyl, lower carbalkoxy, lower alkoxy or acetamido; R.sup.5 is halogen, cyano or carbalkoxy; R.sup.6 is hydrogen or halogen; Y is an anion customary in the cyanine dye art; and n is 0 or 1.Type: GrantFiled: January 2, 1974Date of Patent: January 13, 1976Assignee: Polaroid CorporationInventors: Alan L. Borror, Ruth Linda Hill, Bernard Zuckerman
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Patent number: 3930860Abstract: A light-sensitive silver halide material for the high temperature and rapid color development at least 30.degree.C, which light-sensitive silver halide material comprises at least one spectrally sensitized silver halide photographic emulsion layer, the emulsion layer containing at least one sensitizing dye having an halogen ion concentration increasing effect.Type: GrantFiled: January 2, 1974Date of Patent: January 6, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Masanao Hinata, Seiiti Kubodera
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Patent number: T969005Abstract: in a highly or superhighly sensitive color photographic material having at least one highly or superhighly light-sensitive silver halide emulsion layer containing a color-forming coupler and silver iodobromide grains color-sensitized with a dye having at least one sulfo group or carboxy group, the silver halide emulsion grains having a mean grain size of larger than about 1 micron, the occurrence of fog due to pressure stimulus is prevented effectively by the incorporation of a high-boiling organic solvent having a boiling point of higher than about 175.degree. C at normal pressure in the silver halide emulsion layer in an amount of higher than about 20% by weight of the amount of binder present in the emulsion layer.Type: GrantFiled: July 25, 1977Date of Patent: April 4, 1978Inventors: Akira Tanaka, Akikazu Mikawa, Yuji Mihara, Yasuo Mukunoki