| Patent application number | Description | Published |
|---|
| 20090049815 | Thin-walled porous ceramic wall-flow filter - A thin-walled porous ceramic wall-flow filter is disclosed. The filter produces a relatively lower pressure drop coupled with relatively high initial filtration efficiency (FE | 02-26-2009 |
| 20090297764 | Stablized Low-Microcracked Ceramic Honeycombs And Methods Thereof - Disclosed are stabilized, high-porosity cordierite honeycomb substrates having little or no microcracking, and a high thermal shock resistance. The porous ceramic honeycomb substrates generally comprise a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite substrates. | 12-03-2009 |
| 20100180561 | Filtration Structures For Improved Particulate Filter Performance - A particulate filter may comprise an inlet end, an outlet end, and a plurality of channels disposed and configured to flow fluid from the inlet end to the outlet end, wherein the channels are defined by porous walls configured to trap particulate matter. The porous walls may have a total porosity greater than about 45%, a median pore size ranging from about 13 micrometers to about 20 micrometers, and a pore size distribution such that pores less than 10 micrometers contribute less than about 10% porosity. | 07-22-2010 |
| 20100180772 | Particulate Filters and Methods for Regenerating Particulate Filters - A particulate filter may comprise an inlet end, an outlet end, and a plurality of channels disposed and configured to flow fluid from the inlet end to the outlet end, wherein the channels are defined by porous walls configured to trap particulate matter. The porous walls may have a cell density less than about 200 cpsi, a wall thickness of less than about 14 mils, a median pore size that ranges from about 13 micrometers to about 20 micrometers, a total porosity greater than about 45%, and a pore size distribution such that pores less than 10 micrometers contribute less than about 10% porosity. | 07-22-2010 |
| 20110048227 | Particulate Filters And Methods Of Filtering Particulate Matter - A particulate filter may comprise an inlet end, an outlet end, and a plurality of parallel channels disposed and configured to flow fluid from the inlet end to the outlet end, the channels being defined by a plurality of porous walls configured to trap particulate matter. The particulate filter may define at least one filtration region including a first group of channels and at least one bypass region including a second group of channels, wherein at least some of the channels in the first group of channels are plugged at an end thereof, wherein the channels in the second group of channels are unplugged, and wherein greater than or equal to about 70% of the plurality of parallel channels are plugged at an end thereof. | 03-03-2011 |
| 20110121478 | Methods for Manufacturing Low Back Pressure Porous Cordierite Ceramic Honeycomb Articles - Disclosed are porous ceramic honeycomb articles, such as filters, which are composed predominately of a cordierite composition. The ceramic honeycomb articles possess a porous microstructure characterized by a unique combination of relatively high porosity (>45%), and moderately narrow pore size distribution wherein greater than 15% and less than 38% of the total porosity exhibits a pore diameter less than 10 μm, and low CTE wherein CTE≦6.0×10 | 05-26-2011 |
| 20110132194 | Partial Wall-Flow Filter and Method. - A partial wall-flow filter having some unplugged flow-through channels and some plugged channels. Desirable combinations of filtration efficiency and back pressure may be provided by combinations of t wall≦305 urn, MPD≦20 μm, % P≧50%, and CD≧250 cpsi wherein t wall is the transverse thickness of the porous walls, MPD is a mean pore diameter of the porous walls, % P is the total porosity of the porous walls, and CD is the cell density of the channels. In one embodiment, some of the plugged channels are located adjacent to the inlet end and some are located adjacent to the outlet end. Systems and method including the partial wall-flow filter are also described. | 06-09-2011 |
| 20120031061 | Honeycomb Manufacturing Method Using Ground Nut Shells And Honeycomb Body Produced Thereby - A method of manufacturing a honeycomb body is disclosed having the steps of mixing inorganic source materials, a nut shell pore former, and forming aids to form a plasticized batch, wherein the nut shell pore former has a particle size distribution with 20 μm≦d | 02-09-2012 |
| 20120135186 | Cordierite Porous Ceramic Honeycomb Articles With Delayed Microcrack Evolution - A porous ceramic honeycomb article includes a primary cordierite phase and an intercrystalline glass phase. In an as-fired condition, the porous ceramic honeycomb article exhibits microcrack parameter Nb | 05-31-2012 |
| 20120177875 | High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same - The present invention describes a high porosity (% P≧45%), refractory, ceramic article comprising a cordierite ceramic phase and at least about 0.1 wt.% of a rare earth oxide, such as yttrium oxide or lanthanum oxide. When compared to typical high-porosity cordierite articles, the articles of the present invention may exhibit relatively high strength, relatively low microcracking, relatively high strain tolerance (MOR/E), and/or relatively high thermal shock resistance (TSP). | 07-12-2012 |
| 20120247088 | EXHAUST GAS AFTER-TREATMENT SYSTEM - An exhaust gas after-treatment system ( | 10-04-2012 |
| 20130320586 | EXTRUSION DIE WITH CURVED FACE - The present disclosure provides a flow device including a body disposed in an extrusion apparatus. The body is defined along a plane and has a first side and a second side. The second side is disposed opposite the first side. The flow device also includes a first face formed at the first side and a second face formed at the second side. The body has a thickness defined between the first face and second face. A plurality of feedholes is defined in the body between the first side and the second side. In addition, at least a portion of the first face or second face forms a curvature that extends outwardly from the plane. | 12-05-2013 |
| 20140147664 | Fused Silica Based Cellular Structures - A porous cellular body comprising primarily a porous sintered glass material is disclosed. The porous sintered glass material primarily includes a first phase and a second phase, the first phase primarily comprising amorphous fused silica and the second phase comprising amorphous fused silica and a sintering aid. | 05-29-2014 |
| 20140148329 | CERAMIC PROCESSING FIRING - A process for producing a honeycomb ceramic article includes providing a green honeycomb body including ceramic-forming materials and organic pore forming materials and subjecting the green honeycomb body to a firing cycle in a kiln in which steam is added to the kiln atmosphere in an amount from about 10% to about 100%, based on volume. Also provided are ceramic articles produced by the process. | 05-29-2014 |
| 20140252695 | FAST FIRING METHOD FOR CERAMICS - A method for firing a green honeycomb ceramic body in a kiln may include heating the green honeycomb ceramic body in four stages. The first stage may include heating the green honeycomb ceramic body from room temperature to a first temperature that at a first heating rate that is greater than or equal to about 75° C./hr. The second stage may include heating the green honeycomb ceramic body from the first temperature to a second temperature at a second heating rate that is less than or equal to the first heating rate. The third stage may include heating the green honeycomb ceramic body from the second temperature to a hold temperature at a third heating rate that is less than or equal to the first heating rate. The fourth stage may include holding the green honeycomb ceramic body at the hold temperature to remove residual carbon. | 09-11-2014 |
| 20150050609 | METHOD AND APPARATUS FOR THERMALLY DEBINDERING A CELLULAR CERAMIC GREEN BODY - An apparatus and method for debindering a cellular ceramic green body. The apparatus includes a flow modulation member to selectively restrict circulation of a heated oxygen-containing atmosphere through a top of a cellular core section of the green body. The method includes heating the green body in a circulating oxygen-containing atmosphere while selectively restricting circulation of the atmosphere through the top of the cellular core section of the green body. | 02-19-2015 |
