...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7354733 | Method for sorting and separating living cells We disclose methods of sorting or separating mixtures of living cells (e.g., eukaryotic, prokaryotic, mammalian, pathogenic, bacterial, viral, etc.). We perform our methods by activating cell-selective photophoric labels, which photosensitize and chemically reduce a... | 04/08/2008 |
| 7238228 | Magenta metal chelate dyes and their use in ink-jet printers A metal chelate of Formula (1) or salt thereof. Formula (1) wherein: R1 and R2 are each independently H or an organic group; M is a metal; p is 1 to 4; Y is an optionally substituted heterocyclic ring with a nitrogen ortho to the azo bridge; G ... | 07/03/2007 |
| 7026166 | Fluorogenic dyes The present invention relates to the use of fluorogenic or chromogenic dyes as reporter molecules for detecting cell entry by a specific molecule. ... | 04/11/2006 |
| 6809208 | 3-Arylbenzofuranones with electron-withdrawing substituents as stabilizers The invention describes novel compounds of the formula (I) wherein the general symbols are as defined in claim (1) and R1 is an aromatic radical with electron withdrawing substituents, as stabilizers for protecting organic materials, in particular polymer... | 10/26/2004 |
| 6803177 | Silver compounds and compositions, thermally developable materials containing same, and methods of preparation Novel silver compounds can include a primary core of a photosensitive silver halide and a shell covering the primary core. This shell includes one or more non-photosensitive silver salts, each silver salt including an organic silver coordinating ligand. Other novel ... | 10/12/2004 |
| 6277537 | Dye diffusion image separation systems with thermal solvents A photographic chrogenic and substantially dry dye-diffusion-transfer element is disclosed, wherein said element is activated by heat and comprises contacting dye-receiver and dye-donor layers and further comprises a layer which contains a thermal solvent... | 08/21/2001 |
| 6180324 | Heat developable color photographic material and image-forming system using the same A heat developable color photographic material for use in an image-forming process comprising: (a) superposing a heat developable color photographic material onto an image-receiving material that is formed on a separate support from a support of the heat ... | 01/30/2001 |
| 6127088 | Heat developable color light-sensitive material A heat developable color light-sensitive material containing at least light-sensitive silver halide, a binder, and a dye-providing compound on a support, wherein at least one of the compounds represented by formula (1) is contained as the above dye-provid... | 10/03/2000 |
| 6124084 | Silver halide photographic light-sensitive material A silver halide photographic light-sensitive material comprising a support having provided thereon a layer containing at least one cyan dye image forming compound represented by the following formula (1): (Dye-X)1 --Y ... | 09/26/2000 |
| 5817452 | Heat developable color light-sensitive material A heat developable color light-sensitive material provided on a support, which is for use in an image forming process comprising using a dye fixing element provided on a support separate from the support for the light-sensitive material, superposing one o... | 10/06/1998 |
| 5780198 | Silver halide photographic material A silver halide photographic material comprising a plurality of light-sensitive silver halide emulsion layers, wherein (A) at least one of the layers contains a hydrazine nucleating agent represented by formula (II): ##STR1## wherein R1 | 07/14/1998 |
| 5731140 | Pyrazolylazophenol dye A pyrazolylazophenol dye exhibiting excellent spectral characteristics and having high fastness to light, heat, air or chemicals, and a color light-sensitive material containing an image forming compound comprising the dye, which releases a magenta dye ex... | 03/24/1998 |
| 5716754 | Image-recording materials There are described image-recording materials which include an image dye-providing compound comprising a novel naphthol azo cyan dye having a 3-aminobenzoisothiazole moiety. The image dye-providing compound includes a diffusion control moiety such as a hy... | 02/10/1998 |
| 5665529 | Color diffusion transfer photographic material A color diffusion transfer photographic material is described, which comprises at least one compound represented by the following formula (I): ##STR1## wherein R1 and R2 each independently represents a hydrogen atom, a substitut... | 09/09/1997 |
| 5663042 | Developing agents for (photo) thermographic systems A thermographic element comprising in a non-aqueous binder medium a silver salt oxidizing agent in reactive association with a compound comprising a plurality of redox color releasing moieties such that oxidation of each redox color releasing moiety cause... | 09/02/1997 |
| 5631125 | Photographic useful group releasing system A photographic element is disclosed containing a compound capable of releasing image-wise a photographic useful group (PUG) based on a mechanism involving radical formation under development conditions and splitting of a homolytically labile bond. In a pr... | 05/20/1997 |
| 5616446 | Silver halide photographic light-sensitive material Disclosed is a silver halide photographic light-sensitive material comprising a support having on one side thereof hydrophilic colloid layers including a silver halide emulsion layer, wherein at least one of the hydrophilic colloid layers contains a redox... | 04/01/1997 |
| 5585231 | Heat developable color light-sensitive material with pyrazolotriazole containing dye A heat developable color light-sensitive material containing at least light-sensitive silver halide, a binder, and a dye-providing compound on a support, wherein at least one of the compounds represented by formula (1) is contained as the above dye-provid... | 12/17/1996 |
| 5543279 | Silver halide light-sensitive material A silver halide light-sensitive material containing a compound represented by formula (I): ##STR1## wherein variables in the above formula (I) are defined in the specification. The silver halide light-sensitive material has a small fluctuation i... | 08/06/1996 |
| 5532121 | Mottle reducing agent for photothermographic and thermographic elements Reduction of mottle and other surface anomalies in photothermographic and thermographic elements is reduced by the incorporation of a fluorinated polymer containing at least two different groups within the polymer chain derived from reactive monomers, the... | 07/02/1996 |
| 5514529 | Silver halide color photographic light-sensitive material containing chemically sensitized grains and pug compound A light-sensitive material having at least one emulsion layer containing silver halide grains, wherein tabular grains having an average aspect ratio of 2 or more occupy at least 50% of the total projected area of all grains, and the material contains a co... | 05/07/1996 |
| 5514532 | Silver halide color photographic material A silver halide color photographic material comprising a support having thereon at least one layer containing a hydrazide compound represented by the following formula (1) ##STR1## wherein R represents an alkyl group, an aryl group, or an aromatic ... | 05/07/1996 |
| 5512414 | Solid particle coupler dispersions for color diffusion transfer elements A photographic color diffusion transfer element is disclosed wherein said element comprises a single dimensionally stable support, wherein said support comprises an opaque and light reflecting layer, and coated thereon in reactive association and in seque... | 04/30/1996 |
| 5496680 | Color diffusion transfer element with benzenesulfonamide There is disclosed a color diffusion transfer light-sensitive material in which a transferred density is increased and a processing temperature dependency of the transferred density is improved to a large extent. The above light-sensitive material compris... | 03/05/1996 |
| 5492803 | Hydrazide redox-dye-releasing compounds for photothermographic elements A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising: (a) a photosensitive silver halide; (b) a non-photosensitive, reducible source of silver; (c) a... | 02/20/1996 |
| 5492804 | Chromogenic leuco redox-dye-releasing compounds for photothermographic elements A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising: (a) a photosensitive silver halide; (b) a non-photosensitive, reducible source of silver; (c) a... | 02/20/1996 |
| 5455141 | Photographic elements containing blocked dye moieties Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a nucleophile which can react with a uniform distribution of a blocked dye moiety contained in the element to re... | 10/03/1995 |
| 5447835 | Silver halide photographic material containing hydrazine compounds Disclosed is a silver halide photographic material comprising a support having thereon a silver halide emulsion layer containing at least one nucleating agent represented by general formula (N-1) shown below. The silver halide photographic material contai... | 09/05/1995 |
| 5447834 | Color diffusion transfer photographic material A color photographic material for diffusion transfer which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing a combination of a reducible dye providing compound represented by the following general for... | 09/05/1995 |
| 5436111 | Color diffusion transfer light-sensitive material A color diffusion transfer light-sensitive material is described including a support having thereon at least one light-sensitive emulsion layer associated with a dye image-forming material and an electron donor, wherein the dye image-forming material comp... | 07/25/1995 |
| 5427891 | Method for developing a silver halide photographic material Disclosed is a silver halide photographic material comprising: at least one silver halide emulsion layer; a hydrazine derivative; and at least one hydroquinone derivative represented by general formula (LI) or (LII): ##STR1## wherein G represents hydrogen... | 06/27/1995 |
| 5424183 | Ballasted leuco dyes and photothermographic element containing same Heat-developable photothermographic materials capable of providing stable color images of high resolution. These materials comprise a support bearing a layer of an image-forming composition comprising: (a) a photosensitive silver halide, (b) an organic silver ... | 06/13/1995 |
| 5418111 | Color diffusion transfer photographic material with sulfamoyl phenyl Disclosed is a color diffusion transfer photographic material improved in transfer density (Dmax) and treating temperature dependency thereof on color diffusion transfer, comprising a color diffusion transfer light-sensitive element containing at least on... | 05/23/1995 |
| 5415973 | Silver halide photographic material A super-high contrast silver halide photographic material is disclosed, comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the emulsion layer or at least one other hydrophilic colloid layer contains at l... | 05/16/1995 |
| 5395732 | Silver halide photographic materials A silver halide photographic material is disclosed, which comprises (a) at least one light-sensitive silver halide emulsion layer containing a hydrazine derivative and (b) a hydrophilic colloid layer which is different from the light-sensitive silver hali... | 03/07/1995 |
| 5385816 | Photographic silver halide color materials with sulfonylhydrazine color developer This invention provides a color photographic element comprising, in an adjacent silver halide emulsion layer, (1) a development inhibitor releasing developer (IRD) which comprises a hydrazide, sulphonamidophenol, sulphonamidonaphthol, or hydroquinone moie... | 01/31/1995 |
| 5364733 | Photothermographic elements with novel layer structures, each of which contains a thermally-diffusible oxidizable leuco dye and process for producing a color image from leuco dye A photothermographic element containing a transparent substrate having one major surface thereof containing the following layers sequentially coated thereon: an image-receiving layer; an opacifying layer; a first dry silver layer; an interlayer containing... | 11/15/1994 |
| 5354650 | Photographic elements containing release compounds Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a photographically inert compound which can react with a uniform distribution of a second compound contained in ... | 10/11/1994 |
| 5340695 | Silver halide photographic materials Disclosed is a silver halide photograhic material which includes a support and at least one emulsion layer. The material also contains a hydrazine derivative and 8-hydroxyguinoline or a derivative thereof. The emulsion may have been subjected to selenium ... | 08/23/1994 |
| 5328801 | Photographic material and method for forming an image A method for forming an image is disclosed, which comprises processing with a developer having a pH value of 9 to 12 and comprising 0.2 mol/liter or more of a sulfite an imagewise exposed silver halide photographic material comprising a compound represent... | 07/12/1994 |