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| Number | Title | Issue Date |
| 6242051 | Coating method using electrostatic assist A method for electrostatically assisting in coating a liquid composition from a hopper to a web supported by a backing roller, characterized by the steps of a) neutralizing all charges on both surfaces of the web by passing the web through an appropriate ... | 06/05/2001 |
| 6040130 | Photothermographic and thermographic films containing low levels of unsaturated fatty acid to prevent fog A method of obtaining a photothermographic or thermographic film with reduced fog, such as pepper fog, comprises preparing a dispersion of: an oxidation-reduction image-forming combination comprising: a silver behenate oxidizing agent the improvement wher... | 03/21/2000 |
| 6018886 | Effect of air baffle design on mottle in solvent coatings Apparatus for drying coated web material and preferably moving web material comprises a nozzle, means for supplying air to the nozzle and means to distribute the air through said nozzle substantially uniformly across the web width, said nozzle arcing from... | 02/01/2000 |
| 6004740 | Water-soluble non-interactive carboxyl polymers for desalting and concentrating silver halide photographic emulsions A method is disclosed for washing silver halide photographic emulsions, including desalting and/or concentrating, based on depletion phase separation mechanism, wherein phase separation is effected by the addition of water-soluble non-interactive and non-... | 12/21/1999 |
| 5976251 | Inlet for introducing water to wire edge guides for curtain coating The present invention is an apparatus for curtain coating a composite layer formed from a plurality of coating compositions onto a moving receiving surface. Edge guides comprising two thin, parallel and closely spaced wires maintain the horizontal extent ... | 11/02/1999 |
| 5977190 | Process for deionizing and concentrating emulsions A process of washing an emulsion such as a silver halide emulsion which contains a hydrophilic colloid comprises deionizing the emulsion and coagulating the emulsion with an anionic polymer and separating the coagulum from the supernatant and resuspending... | 11/02/1999 |
| 5968646 | Molecular grafting of hardener/gelatin blends to energetically treated polyesters to promote adhesion of layers The present invention comprises a polyester film support in which the surface has been subjected to an energetic treatment with nitrogen plasma to produce amine groups on the polyester surface. The treated surface is then coated with a dilute solution of ... | 10/19/1999 |
| 5954926 | Glow discharge treatment of a web substrate surface in a web coating line Apparatus capable of sustained glow discharge at atmospheric pressure mounted along the web path in a web coating machine ahead of the point of coating application, for glow discharge treatment of the surface of a polymeric web shortly before coating. Lat... | 09/21/1999 |
| 5952520 | Recovery of ester monomer from polyester resins There is described a process for improving the yield of diester monomer recovered from the depolymerization of polyethylene terephthalate by converting a mixture of dimethyl terephthalate and methylhydroxyethyl terephthalate to predominantly dimethyl tere... | 09/14/1999 |
| 5913983 | Edge vacuum system for removing slitter skivings from a running web A method and apparatus for removing skivings generated by slicing a moving web comprises a slitter knife for cutting the web and an edge vacuum machine comprising at least two vacuum heads which engulf but do not touch the moving web. Skivings from the ed... | 06/22/1999 |
| 5908588 | Incipient flocculation molding of particulate inorganic materials A process of molding inorganic materials into desired shapes comprises mixing the material with a dispersant, milling, molding the mixture, drying the mixture and sintering.... | 06/01/1999 |
| 5895744 | Method and apparatus for making polyester web having high adhesion to coated layers Method and apparatus for making thermoplastic web from polyester or polyester blends for subsequent aqueous coating without requirement of an undercoat or primer coat for adhesion of subsequent coatings. Feedstock pellets of polymer, such as polyethylene ... | 04/20/1999 |
| 5885660 | Coating surfaces with a free falling coating composition, using a basin with a wall dividing the basin into two channels An apparatus for coating surfaces consists of a basin, open to the atmosphere, divided into two channels by a wall running perpendicular to the coating direction. Liquid is supplied to the primary channel, the channel farther from the curtain. A continuou... | 03/23/1999 |
| 5882527 | Method of accelerating the dissolution rate of accumulated filter cake by channeling gas bubbles through the cake A process of dissolving solid waste material in packed beds comprises the addition to the packed bed of a solvent for the solid waste and a material which releases a gas on contact with the solvent which forms channels in the packed bed allowing more rapi... | 03/16/1999 |
| 5871896 | Preparation and use of a dimethylamine silver bromide complex as a single source precursor for nucleation of silver bromide crystals A dimethylamine silver bromide complex is used as a single source precursor for nucleation of silver bromide crystals.... | 02/16/1999 |
| 5866314 | Preparation and use of A dimethylamine silver chloro-iodide complex as a single source precursor for iodide incorporation of silver chloride crystals A dimethylamine silver chloro-iodide complex is used as a single source precursor for iodide incorporation in silver chloride crystals.... | 02/02/1999 |
| 5863607 | Hybrid metal-ceramic coating apparatus and method A coating hopper (10) for coating a radiation-sensitive emulsion on a photographic support (24) is fabricated from hopper bars (12) comprising an inlet slot (16) and a discharge slot (18), said bar (12) comprising a body and hopper lip (22), wherein the b... | 01/26/1999 |
| 5856080 | Preparation and use of a dimethylamine silver chloride complex as a single source precursor for nucleation of silver chloride crystals A dimethylamine silver chloride complex is used as a single source precursor for nucleation of silver chloride crystals.... | 01/05/1999 |
| 5856079 | Preparation and use of a dimethylamine silver bromo-iodide complex as a single source precursor for iodide incorporation in silver bromide crystals A dimeitylarnine silver bromo-iodide complex is used as a single source precursor for iodide incorporation in silver bromide crystals.... | 01/05/1999 |
| 5837319 | Spin process for highly conformal coatings A substrate is rotated at a first bead of less than or equal to 500 rpm per second. A coating composition solution is applied to the substrate at this point. The substrate is then accelerated at a first rate of between 300 and 1200 rpm per second. When th... | 11/17/1998 |
| 5827470 | Method for preparing a zirconia/zirconium diboride composite Preparing an electrically conductive ceramic composite by the steps of: 1) mixing and milling tetragonal zirconia alloy or a composite of zirconia-alumina with zirconium diboride, and 2) pressing in a die and sintering in an argon atmosphere between 1300° and... | 10/27/1998 |
| 5824123 | Zirconia articles having tetragonal cores and monoclinic cases and preparation and sintering methods A method for preparing a ceramic article comprising compacting a particulate alloy of a primary oxide and a secondary oxide to form a blank, and sintering the blank in contact with substantially pure zirconium oxide. The primary oxide is zirconium oxide a... | 10/20/1998 |
| 5821381 | Low pressure process for purifying crude polyester by sublimation There is described a process for depolymerizing polyesters such as polyethylene terephthalate polyester to monomer components comprising esters such as dimethyl terephthalate and purifying the ester by sublimation, which purified ester can then be used to... | 10/13/1998 |
| 5822038 | Apparatus for stretching and aligning film sheets A method and apparatus for stretching and aligning film sheets to a lenticular substrate comprising supporting members for the film sheet, two actuator assemblies positioned on opposite sides of a film sheet with a rigid bar member connecting the actuator... | 10/13/1998 |
| 5814722 | System for measurement of peaks on surfaces A method of characterizing the roughness of a surface comprises counting peaks on a surface using a sensor by locating direction changes above a minimum and searches for the next direction change and where three changes are found of a valley, peak and ano... | 09/29/1998 |
| 5804044 | Electrolysis device and method using a porous electrode The present invention relates to an electrolysis cell for percolating a solution in order to perform a chemical reaction, such as the cathodic reduction of a metal cation. This cell includes for example a bed of cathodically biased particles 31, a plurali... | 09/08/1998 |
| 5797539 | Circuit board reflow ovens An electronic circuit board solder reflow device for heating flux and transporting the circuit board from further treatment includes a conveyor for transporting the circuit board through a heating solder area to an output conveyor for further treatment. T... | 08/25/1998 |
| 5795362 | Alumina ceramic articles having cubic spinel on surfaces and methods for preparing alumina ceramic articles and for sintering An alumina ceramic article and a method for preparing the article. The method comprises the steps of: (1) Compacting a mixture of a first concentration of particulate aluminum oxide sufficient to prevent retention of the zirconium oxide alloy particles in... | 08/18/1998 |
| 5796856 | Gap measuring apparatus and method An apparatus and method to measure a gap width distance, specifically the distance between the lip of a coating hopper and the tangential edge of a coating roller or the support on the roller, is disclosed herein. The apparatus includes a long range micro... | 08/18/1998 |
| 5792515 | Coating processes It is well known that coating speeds are limited due to the onset of air entrainment. These limiting coating speeds have been found to be highest on solid surfaces of intermediate wettability with respect to water, and in particular, on surfaces having hi... | 08/11/1998 |
| 5789145 | Atmospheric pressure glow discharge treatment of base material for photographic applications The present invention is a method for treating a polyester support such as polyethylene naphthalate or polyethylene terephthalate. The treatment is carried out at atmospheric pressure in a gas of helium and optionally nitrogen and/or oxygen. The treatment... | 08/04/1998 |
| 5779798 | Device for distributing liquid by gravity The invention concerns a device for distributing liquid by gravity, particularly in a photographic coating process. The device comprises: a) a rigid cylindrical outer pipe; an inner casing produced from a flexible material and the external diameter of which is... | 07/14/1998 |
| 5776515 | Device for producing discrete rolls of chilled solutions or dispersions A device for producing discrete rolls of chilled solutions or dispersions wherein the combination of a distribution bar, an auxiliary weir hopper and a puddle hopper allows for continuous coating of a rotating chiller drum in producing discrete rolls sepa... | 07/07/1998 |
| 5771764 | Use of cutting tools for photographic manufacturing operations A method of cutting, slicing or perforating photographic imaging elements using certain cutting tools is disclosed. The cutting tool material includes zirconia and yttria at a molar ratio of yttria to zirconia from about 0.5:99.5 to about 5:95. The cuttin... | 06/30/1998 |
| 5773204 | Photographic coating process The invention concerns a process for coating a photographic support. The process consists of depositing on a support a succession of at least two layers, at least one of which consists of a photosensitive composition, the top layer, situated at the opposite si... | 06/30/1998 |
| 5770778 | Purification of ethylene glycol recovered from polyester resins There is described a process for purifying ethylene glycol recovered from scrap polyester by contacting the recovered ethylene glycol with, in either order, a first adsorbent that has a high affinity for polar contaminants and a second adsorbent that has ... | 06/23/1998 |
| 5767469 | Near atmospheric pressure treatment of polymers using helium discharges The present invention is a method and apparatus for treating a polyester support such as polyethylene napthalate or polyethylene terephthalate. The treatment is carried out at near atmospheric pressure in a gas of helium and nitrogen or oxygen. The treatm... | 06/16/1998 |
| 5763013 | Edge removal apparatus including air-flow blocking means for curtain coating The present invention is an edge blade attached to an edge guide for removing an edge of a falling curtain. The edge of the falling curtain is intercepted by the edge blade and is vacuumed away by a vacuum tube disposed near the edge blade wherein the air... | 06/09/1998 |
| 5759762 | High chloride emulsion with dimethylamine silver chloro-iodide and antifoggants A solution containing a dimethylamine silver chloro-iodide complex is added with an antifoggant to a silver chloride emulsion to form a stable AgICl emulsion.... | 06/02/1998 |
| 5747547 | Recovery of components from polyester resins There is described a process and apparatus for the depolymerization of polyester resins, such as polyethylene terephthalate into component monomers using a countercurrent or crossflow reactor.... | 05/05/1998 |
