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| Number | Title | Issue Date |
| 8163346 | System and method for marking honeycombs and associating manufacturing data therewith Both a system and method for marking honeycomb structures is provided. The system includes a printing station having a print head moveable relative to a log that prints an identification mark for each structure to be cut from the log; an elevation mechanism that pos... | 04/24/2012 |
| 8037717 | Methods and apparatus for pulsed doping or drying a soot preform A method of manufacturing an optical waveguide preform includes providing a first process gas atmosphere to a soot preform contained in a vessel. The first atmosphere is held in the vessel for a first reacting time sufficient to at least partially dope or dry the so... | 10/18/2011 |
| 8017067 | Method of making a single fire honeycomb structure A method for manufacturing a honeycomb structure comprises providing an aqueous ceramic solution, providing a batch cross-link agent, mixing the agent with the solution, extruding the aqueous ceramic solution containing the cross-link agent into a honeycomb structur... | 09/13/2011 |
| 7981188 | Controlled pore size distribution porous ceramic honeycomb filter, honeycomb green body, batch mixture and manufacturing method therefor A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d1≧7.0 microns. Preferably, the oxide-based material is cordierite or aluminum titanate. Alternatively, the filter contains a cordie... | 07/19/2011 |
| 7927682 | Low-microcracked, porous ceramic honeycombs and methods of manufacturing same Substantially non-microcracked, porous, cordierite ceramic honeycomb bodies are provided. Although exhibiting moderately high thermal expansion (CTE) between 7×10−7 to 16×10−7/° C. (25-800° C.), the honeycomb bodies exhibit relatively h... | 04/19/2011 |
| 7887897 | Cordierite honeycomb article and method of manufacture Disclosed are ceramic honeycomb articles which are composed predominately of a crystalline phase cordierite composition. The porous cordierite ceramic honeycomb articles has a plurality of cell channels and intersecting porous walls and possess a microstructure char... | 02/15/2011 |
| 7565820 | Methods and apparatus for forming heat treated optical fiber A method for forming an optical fiber includes drawing the optical fiber from a glass supply and treating the fiber by maintaining the optical fiber within a treatment temperature range for a treatment time. Preferably also, the fiber is cooled at a specified coolin... | 07/28/2009 |
| 7445745 | Method for fabricating ceramic articles A method for fabricating a ceramic article which includes providing a batch comprising components of (i) a mixture of inorganic raw materials comprising talc, alumina, and silica; (ii) a binder comprising a water-soluble organic binder and a fibrous silicate mineral... | 11/04/2008 |
| 7442425 | High porosity honeycomb and method A ceramic honeycomb substrate for use in an automotive catalytic converter system which exhibits improved light-off performance by virtue of a high porosity of 45 to 75% while still maintaining a wall thickness of greater than 2.0 mil (0.0020 inch, 0.0508 mm), prefe... | 10/28/2008 |
| 7438546 | Extruded ceramic log transfer system An apparatus for orienting section of a plasticized ceramic extrudate includes a marking assembly for applying an orientation reference mark to a plasticized ceramic extrudate exiting an extrusion die onto an extrudate support, and at least one extrudate-contacting ... | 10/21/2008 |
| 7422719 | Process for removing oil-based components and forming ceramic bodies An improvement in a process of forming ceramic articles comprising oil-based components or extrusion aids, the improvement including removing the oil-based components after drying and prior to firing by flowing a heated gas through the green ceramic honeycomb articl... | 09/09/2008 |
| 7410528 | Method and system for testing the integrity of green plugged honeycomb structure A method for testing integrity of a plugged honeycomb structure includes forming a condenser at a first end of the honeycomb structure, passing a vaporous stream into a second end of the honeycomb structure, wherein a column of the vaporous stream emerges at the fir... | 08/12/2008 |
| 7384442 | Ceramic wall-flow filter including heat absorbing elements and methods of manufacturing same A ceramic wall-flow filter for filtering particulate matter from gases and methods for manufacturing such wall-flow filters are disclosed. The filter includes an array of porous ceramic walls defining a pattern of end-plugged inlet and outlet cells, and heat absorbi... | 06/10/2008 |
| 7309371 | Narrow pore size distribution cordierite filters with reduced pressure drop A diesel particulate filter having a honeycomb body composed of cordierite and exhibiting a CTE (25-800° C.) of less than 13×10−7/° C.; a median pore diameter, d50, of less than 25 μm; % porosity not less than 53%; and a narrow pore size ... | 12/18/2007 |
| 7304013 | Metal oxide catalysts Bulk and supported catalysts are prepared from an aqueous slurry containing a catalytically active material and a binder. The slurry is either coated onto a support and dried to form a porous, high surface area phase containing the catalytically active material, or ... | 12/04/2007 |
| 7300898 | Low CTE cordierite body Disclosed is a sintered ceramic article that exhibits a primary crystalline phase of cordierite having an analytical oxide composition, expressed in weight percent on an oxide basis, of 49-53% SiO2, 33-38% Al2O3, 12-16% MgO and which... | 11/27/2007 |
| 7294301 | Die assembly and method for forming honeycomb filters A method for forming honeycomb structures, such as wall-flow honeycomb filters, which utilizes extrusion of multiple material supplies at once. Such methods may be used to form intermittent plugs or other structures in the cell channels during the extrusion process,... | 11/13/2007 |
| 7294164 | Narrow pore size distribution aluminum titanate body and method for making same This invention relates to an aluminum titanate body having a narrow pore size distribution as characterized by the relation (d50−d10)/d50 being less than 0.50 corresponding to a high degree of interconnected porosity. The body also... | 11/13/2007 |
| 7279213 | High-strength thin-walled honeycombs Thin-walled ceramic honeycomb products of improved resistance to isostatic pressure damage are provided wherein the skin layers disposed over the cellular matrix portions of the honeycombs are formed of ceramic materials differing from the materials of the matrix as... | 10/09/2007 |
| 7276194 | Method and apparatus for extruding a ceramic material A method is provided for manufacturing a thin-walled honeycomb ceramic substrate by extruding a plasticized ceramic batch material through a filter screen having wedge shaped filter wires to remove foreign particulate and agglomerated batch material. The filter wire... | 10/02/2007 |
| 7259120 | Aluminum titanate ceramic articles and methods of making same An aluminum titanate ceramic article having a predominant crystal phase of aluminum titanate and a material composition including aluminum, titanium, silica, an alkaline earth metal (e.g., at least one selected from the group of strontium, calcium, barium, or combin... | 08/21/2007 |
| 7247184 | Asymmetric honeycomb wall-flow filter having improved structural strength A honeycomb filter includes an array of interconnecting porous walls which define an array of first channels and second channels. The first channels are bordered on their sides by the second channels and have a larger hydraulic diameter than the second channels. The... | 07/24/2007 |
| 7244689 | Method of producing alumina-silica catalyst supports Alumina-silica catalyst supports having substantially high surfaces areas are formed by extrusion, drying and firing of a plasticized batch including an alumina-silica powder component, acid, organic binder and water. The alumina-silica powder component can be forme... | 07/17/2007 |
| 7238319 | Method for fabricating ceramic articles containing organic compounds A method for fabricating a green ceramic article containing organic compounds. The method involves first heating the green ceramic article to sequentially remove the organic compounds such that the organic compound with the lowest weight loss onset temperature is su... | 07/03/2007 |
| 7179316 | Cordierite filters with reduced pressure drop A diesel particulate filter comprising a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof, wherein the filter exhibits a... | 02/20/2007 |
| 7141089 | Magnesium aluminum silicate structures for DPF applications A ceramic filter for trapping and combusting diesel exhaust particulates composed of an end-plugged cordierite honeycomb structure exhibiting a pore size distribution as determined by mercury porosimetry in which the quantity d50/(d50+d90 | 11/28/2006 |
| 7141204 | Method of forming ceramic articles An improvement in a method of forming ceramic articles comprising an oil component or extrusion aid, the improvement including removing a substantial portion of the oil component, prior to firing, by applying a solvent to the green ceramic article to dissolve the oi... | 11/28/2006 |
| 7112050 | Extrusion die for making a double-skin honeycomb substrate A honeycomb substrate includes an inner body having an inner skin and an array of inner webs defining an array of inner cells within the inner skin. The honeycomb substrate further includes an outer body having an outer skin formed concentric with the inner skin and... | 09/26/2006 |
| 7097880 | Method for preparing catalysts A method for impregnating porous monolith supports with catalytically active materials is disclosed. The impregnation is carried out at a temperature which substantially reduces chemisorption rates such that reactions between the monolith substrate and catalytically... | 08/29/2006 |
| 7089766 | Method of forming optical fiber preforms Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphe... | 08/15/2006 |
| 7088900 | Alkali and fluorine doped optical fiber Disclosed is an optical fiber having a core of SiO2 doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber ha... | 08/08/2006 |
| 7001861 | Aluminum titanate-based ceramic article An aluminum titanate-based ceramic article having a composition comprising u (Al2O3—TiO2)+v (R)+w (3Al2O3—2SiO2)+x (Al2O3)+y (SiO2)+z (1.1SrO-1.5Al2O | 02/21/2006 |
| 7003203 | Large effective area, low kappa, dispersion compensating optical fiber and telecommunication span including same A dispersion compensating optical fiber for use in a high data rate telecommunications span or link. The dispersion compensating optical fiber in accordance with the invention provides excellent compensation of total dispersion over a range of wavelengths (e.g., 152... | 02/21/2006 |
| 6991448 | Apparatus for extruding honeycomb bodies An extrusion apparatus which satisfactorily adjusts differences in skin-body flow rates at multiple locations around the die, and allows for the external manipulation of the interior components controlling batch flow, during the production without having to stop man... | 01/31/2006 |
| 6987918 | Large kappa dispersion compensating fiber and transmission system A dispersion compensation fiber for a moderate dispersion, low slope transmission fiber and transmission system including same. The dispersion compensating fiber has a refractive index profile having a central core with a core delta (Δ1), a moat surrounding ... | 01/17/2006 |
| 6985662 | Dispersion compensating fiber for moderate dispersion NZDSF and transmission system utilizing same A dispersion compensating optical fiber includes a segmented core having a central core segment, a moat segment and a ring segment. The refractive index profile is selected to provide a total dispersion at 1550 nm of between −114 and −143 ps/nm/km, and a kappa, ... | 01/10/2006 |
| 6975801 | Dispersion compensating fiber for low slope transmission fiber and optical transmission line utilizing same A Dispersion Compensation (DC) fiber for low slope transmission fiber (such as a NZDSF) and transmission line including same. The DC fiber has a refractive index profile having a central core with a core delta (Δ1) value less than 1.8%, a moat surrounding th... | 12/13/2005 |
| 6961500 | Dispersion and slope compensating optical fiber and transmission link including same A DCF adapted to compensate for dispersion and slope of a length of SMF in the C-band window that includes a core surrounded by a cladding layer of refractive index Δc. The core includes at least three radially adjacent segments, a central core segment h... | 11/01/2005 |
| 6947637 | Measurement of fiber strain during processing A method and system for determining strain impressed on an optical fiber at a possibly indeterminate temperature. The fiber (14) is formed with at least two sensors having different strain and temperature characteristics, preferably a Bragg Fabry-Perot sensor... | 09/20/2005 |
| 6925237 | High figure of merit dispersion compensating fiber for standard single mode fiber and transmission system utilizing same A dispersion compensating optical fiber that includes a segmented core having a central core segment, a moat segment, and a ring segment wherein the ring segment is preferably offset from the moat outer radius, r2, by a ring offset, Xo, greater... | 08/02/2005 |
