Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7118850 | Color developer replenisher and concentrated composition for color photographic material A concentrated composition of a color developer replenisher for a silver halide color photographic material, the composition comprising a single solution, wherein the solution comprises 0.14 mol/liter or more of a p-phenylenediamine color developing agent, the solut... | 10/10/2006 |
| 6998227 | Color developer concentrate for color film processing An aqueous, homogeneous, single-part color developing concentrate comprises a color developing agent in free base form and an organic antioxidant. The concentrate also includes a water-miscible or water-soluble organic co-solvent and a quaternary ammonium salt to en... | 02/14/2006 |
| 6902876 | Concentrated color developer composition used for silver halide photographic material and processing method by use thereof A color developer concentrate composition is disclosed, comprising a color developing agent, a sulfite and a compound represented by formula (1), the color developing agent concentration 0.02 to 0.2 mol/l and the sulfite concentration meeting the following requireme... | 06/07/2005 |
| 6884572 | Concentrated color developer composition and processing method by use thereof A concentrated color developer composition packed in a container which is comprised of material exhibiting an oxygen permeability of not more than 50 ml/(m2·day·atm), and the concentrated color developer composition comprising a hydroxyalkyl-substituted... | 04/26/2005 |
| 6838230 | Method for processing a digitally exposed translucent or transparent photographic material A method is provided that is suitable fur use in processing a digitally exposed translucent or transparent display material. The method includes exposing a translucent or transparent material to light emitted from a light source. The material contains at least one s... | 01/04/2005 |
| 6830878 | Partially oxidized polyalkyleneimine antioxidant for photographic developers The present invention relates to a developer comprising a developing agent and a polyalkyleneimine antioxidant being formed by the condensation of a number of alkyleneimine units and having the following formula (I): | 12/14/2004 |
| 6673527 | Color developer solution, concentrated composition thereof for use in silver halide color photographic material and processing method A color developer solution capable of inhibiting precipitation or tar-staining occurring in the processing tank or the roller rack, even when being processed rapidly or at low replenishing rate and a concentrated composition thereof is disclosed, comprisi... | 01/06/2004 |
| 6673528 | Ascorbic acid developing compositions containing sugar and methods of use A black-and-white photographic developing composition has improved stability and is more compatible with the environment when discarded. The composition includes one or more ascorbic acid developing agents and is essentially free of hydroquinone and simil... | 01/06/2004 |
| 6664035 | Method of use of stabilized rapid access color developers for color negative film A method for providing a color image in an exposed color negative silver bromoiodide film element comprising contacting said element with an aqueous color developing composition having a pH of 9.0 to 12.0 and comprising a color developing agent, sulfite i... | 12/16/2003 |
| 6623915 | Stable photographic color developing composition and method of use Concentrated and working strength photographic color developing compositions are stabilized with the inclusion of a sulfur compound as a preservative for a color developing agent. The preservative can be represented by one of the following Structures I, I... | 09/23/2003 |
| 6605421 | Aqueous solution containing hydroxylamine salt and storing method thereof An aqueous solution comprising a hydroxylamine salt in an amount of 18 to 35 weight-%, wherein the aqueous solution further comprises at least one compound selected from the group consisting of amino polycarboxylic acids and compounds represented by the g... | 08/12/2003 |
| 6599688 | Stable photographic color developing composition and method of use Concentrated and working strength photographic color developing compositions are stabilized with the inclusion of an -ketocarboxylic acid or salt thereof, such as pyruvic acid or a salt thereof. These compositions can be used to process color photo... | 07/29/2003 |
| 6573035 | Stable multi-part photographic color developing composition and method of use A multi-part (two-part or three-part) color developing kit includes aqueous solutions containing sulfite ions and a color developing agent. An -ketocarboxylic acid or salt thereof, such as pyruvic acid or a salt thereof, is included in one or more ... | 06/03/2003 |
| 6548235 | Stabilized solution of an alkali metal or alkaline earth metal salt of p-phenylenediamine color developer and method of making same A stabilized solution of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methanesulfonylaminoethyl)-2-methyl-p-phenylenediamine includes from about 10 to 40 weight percent of an alkali metal or alkaline earth metal salt of N-ethyl-N-2-(methan... | 04/15/2003 |
| 6541191 | Photographic processing solutions A photographic aqueous processing solution containing at least one solid compound that has a maximum solubility therein corresponding to a desired operating level, which solution is kept in equilibrium with the solid form of the compound, thus maintaining... | 04/01/2003 |
| 6520693 | Method of providing photoprocessing services A method of providing photoprocessing services utilizes a packaging system in which photoprocessing solutions are distributed from a source of manufacture to a photofinishing site. The packaging system includes a rigid or semi-rigid outer container and at... | 02/18/2003 |
| 6444414 | Ascorbic acid developing compositions stabilized with sulfo compound and methods of use A black-and-white photographic developing composition has improved stability and is more compatible with the environment when discarded. The composition includes one or more ascorbic acid developing agents and a preservative (such as a sulfite) and is ess... | 09/03/2002 |
| 6410215 | High temperature color development of photographic silver bromoiodide color negative films using pH stabilized color developer Silver bromoiodide color negative films can be rapidly color developed using stabilized color developer solutions kept at high temperatures with minimal changes in the resulting color record densities. The compositions are stabilized by adjusting or maint... | 06/25/2002 |
| 6406838 | Protective overcoat for an imaging element comprising an enzyme-treated biopolymer The present invention provides an overcoat for a photographic element that allows for appropriate diffusion of photographic processing solutions. The overcoat comprises 10 to 50% by weight of a enzyme-degradable biopolymer and 50 to 90% by weight of hydro... | 06/18/2002 |
| 6251574 | Color photographic developer concentrate A one-part, multi-phase colour developer concentrate having an aqueous phase and an organic phase, wherein the organic phase is constituted by a carboxylic acid amide or urea derivative which is liquid at room temperature and the concentrate contains at l... | 06/26/2001 |
| 6228567 | Homogeneous photographic color developing concentrate A homogeneous color developing concentrate comprises a color developing agent in free base form, an antioxidant for the color developing agent and a water-miscible or water-soluble hydroxy-substituted, straight-chain organic solvent. This concentrate is p... | 05/08/2001 |
| 6190845 | Color developer composition A process and a composition is described of a color developing agent for processing a silver halide color photographic material, the composition containing a paraphenylenediamine type color developing agent and an amine of formula (I) or a salt thereof R | 02/20/2001 |
| 6159670 | Calcium ion stable photographic color developing concentrate and method of manufacture A homogeneous, ready to use, single-part color developing concentrate comprises a color developing agent in free base form, an antioxidant for the color developing agent, a buffering agent, and a water-miscible or water-soluble hydroxy-substituted, straig... | 12/12/2000 |
| 6136518 | Multi-part photographic color developing composition and methods of manufacture and use A multi-part color developing kit includes at least two parts (or solutions) of photochemical compositions that can be mixed to provide a color developing composition useful for obtaining color photographic images. A first aqueous solution is formulated w... | 10/24/2000 |
| 6096488 | Method for processing silver halide color photographic material Processing a silver halide color photographic material comprising color developing, desilvering and water washing and/or stabilizing. In this process, a photographic material which has at least one emulsion layer containing a high silver chloride content,... | 08/01/2000 |
| 6077653 | Photographic developing compositions and methods of using 1,4-cyclohexanediones as antioxidants Certain 1,4-cyclohexanediones are useful as antioxidants in photographic developing compositions. These compounds stabilize the compositions, are water soluble and are essentially odorless. These antioxidants can be used in either black and white or color... | 06/20/2000 |
| 6077652 | Photographic developer and method for developing silver halide photographic light sensitive material by use thereof A photographic developer which is improved in storage stability is disclosed, comprising a developing agent represented by formula (1) and a compound represented by formula (2). ##STR1## wherein R1 are ##STR2## R2 and ... | 06/20/2000 |
| 6071679 | Color developing agent composition and method of processing silver halide color photographic material using said composition As it has been described above, a color developing agent composition according to the invention, which includes a compound given by Formula (I) ##STR1## wherein R1 through R6 are substituents respectively and independently are s... | 06/06/2000 |
| 6037111 | Lithium and magnesium ion free color developing composition and method of photoprocessing A photographic color developing composition includes a color developing agent, an organic antioxidant and at least 0.0005 mol/l of a polyaminopolyphosphonic acid calcium ion sequestering agent that has at least four phosphonic acid (or salt) groups. In ad... | 03/14/2000 |
| 6017687 | Low replenishment color development using chloride ion-free color developer concentrate An aqueous, homogeneous, single-part, chloride ion-free color developing concentrate comprises a color developing agent in free base form, an antioxidant for the color developing agent, a buffering agent, and a water-miscible or water-soluble hydroxy-subs... | 01/25/2000 |
| 6010835 | Kit for photographic color developing bath This invention relates to a 3-part kit preparing for a photographic developing bath for the processing of color photographic materials. The kit of this invention affords an efficient ready-to-use developing solution.... | 01/04/2000 |
| 6010819 | Method for improving light fastness of images, and image forming material A method for improving light fastness of an image, which comprises releasing or forming an image forming dye or a precursor thereof corresponding or counter-corresponding to silver development and allowing an image formed by transferring said image formin... | 01/04/2000 |
| 5998112 | Developer for silver halide light sensitive photographic material and processing method by use thereof A photographic developer composition is disclosed, comprising a reductone, as a developing agent and a compound represented by the following formula (1). The reductone is a compound represented by following formula (A). The processing method by use of the... | 12/07/1999 |
| 5994039 | Black-and-white photographic developing composition and a method for its use Black-and-white elements, such as radiographic films, can be processed rapidly using a black-and-white developing composition containing a hydroquinone developing agent, and specific amounts of sulfite and borate ions. Thus, the molar ratio of sulfite ion... | 11/30/1999 |
| 5968721 | Photographic developer/amplifier process and solutions A process for the redox development of an imagewise exposed photographic recording material comprises developing the photographic material in a redox developer/amplifier solution containing peroxide as an oxidizing agent, hydroxylamine as an antioxidant, ... | 10/19/1999 |
| 5928846 | Method for processing silver halide photographic light-sensitive material A method for processing a silver halide photographic light-sensitive material is disclosed. The processing method comprises the step of (1) developing a silver halide photographic light-sensitive material which comprises a support having thereon a silver ... | 07/27/1999 |
| 5869226 | Concentrated photographic developing slurriers Improved concentrated photographic developing slurries having new and desirable characteristics prepared with conventional photographic processing agents eliminate solidification of sedimentation crystals during shipping, storage or extreme temperatures a... | 02/09/1999 |
| 5863713 | Process repeatedly regenerates developers A repeatable regeneration process for developers comprised of introducing unremarkable sulfites or their derivatives to new and partially exhausted developers for use as a formula conditioner, base and repeatable regeneration supplement for extended devel... | 01/26/1999 |
| 5840471 | Method for processing silver halide photographic light-sensitive material A method for processing a silver halide photographic light-sensitive material is disclosed. The method comprises the steps of developing the silver halide photographic light-sensitive material with a developing solution and contacting the developing solution t... | 11/24/1998 |
| 5837435 | Liquid color developer for silver halide color photosensitive materials and processing method using the same Provided are a liquid color developer suitable for silver halide color photosensitive material, preferably for a silver halide color photosensitive material having a magnetic recording layer on a support, wherein the developer comprises a single solution ... | 11/17/1998 |
