US Patent No: 7,902,107
Number of patents in Portfolio can not be more than 2000
Catalyzed SCR filter and emission treatment system
Stats
-
Mar 8, 2011
Issued date -
Feb 8, 2008
filing date -
12/028,300
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
Provided is an emission treatment system and method for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The emission treatment system has an oxidation catalyst upstream of a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) of NOx by a reductant, e.g., ammonia. Also provided is a method for disposing an SCR catalyst composition on a wall flow monolith that provides adequate catalyst loading, but does not result in unsuitable back pressures in the exhaust.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,510,265 Platinum/silver vanadate catalyzed diesel exhaust particulate filter | 30 | 1984 | |
| 4,912,776 Process for removal of NO.sub.x from fluid streams | 26 | 1987 | |
| 4,961,917 Method for reduction of nitrogen oxides with ammonia using promoted zeolite catalysts | 91 | 1989 | |
| 5,100,632 Catalyzed diesel exhaust particulate filter | 75 | 1990 | |
| 5,516,497 Staged metal-promoted zeolite catalysts and method for catalytic reduction of nitrogen oxides using the same | 47 | 1991 | |
| 5,462,907 Ceria-alumina oxidation catalyst | 42 | 1994 | |
| 5,491,120 Oxidation catalyst with bulk ceria, a second bulk metal oxide, and platinum | 61 | 1994 | |
| 6,826,906 Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines | 30 | 2001 | |
|
|
|||
| 4,983,423 Method of forming a porous inorganic membrane on a porous support using a reactive inorganic binder | 52 | 1988 | |
| 4,912,077 Catalytically active materials and method for their preparation | 13 | 1988 | |
| 5,114,581 Back-flushable filtration device and method of forming and using same | 41 | 1991 | |
| 5,221,484 Catalytic filtration device and method | 33 | 1991 | |
| 5,716,899 Pore-impregnated body and method of producing same | 26 | 1995 | |
| 2007/0140,928 Low pressure drop coated diesel exhaust filter | 11 | 2006 | |
|
|
|||
| 4,329,162 Diesel particulate trap | 195 | 1980 | |
| 4,759,892 Method and apparatus for aligning body with honeycomb structure | 17 | 1981 | |
| 4,455,180 Method of fabricating a sintered and selectively plugged honeycomb structure | 28 | 1981 | |
| 4,752,516 Apparatus for high speed manifolding of honeycomb structures | 11 | 1983 | |
| 4,576,774 Flexible mask and means for applying to honeycomb structures | 10 | 1984 | |
|
|
|||
| 6,753,294 Catalytic wall-flow filter | 29 | 2001 | |
| 7,264,785 Selective catalytic reduction | 19 | 2002 | |
| 7,097,817 Method for treating soot-containing exhaust | 16 | 2004 | |
|
|
|||
| 4,220,633 Filter house and method for simultaneously removing NO.sub.x and particulate matter from a gas stream | 18 | 1979 | |
| 4,309,386 Filter house having catalytic filter bags for simultaneously removing NO.sub.x and particulate matter from a gas stream | 35 | 1980 | |
| 4,793,981 Integrated injection and bag filter house system for SO.sub.x -NO.sub.x -particulate control with reagent/catalyst regeneration | 32 | 1986 | |
|
|
|||
| 4,934,142 Exhaust emission control device for a diesel engine | 81 | 1988 | |
| 5,746,989 Method for purifying exhaust gas of a diesel engine | 119 | 1996 | |
| 7,306,771 Filter catalyst for purifying exhaust gases and its manufacturing method thereof | 13 | 2003 | |
|
|
|||
| 6,813,884 Method of treating diesel exhaust gases | 12 | 2002 | |
| 6,928,806 Exhaust gas aftertreatment systems | 44 | 2002 | |
|
|
|||
| 6,946,013 Ceramic exhaust filter | 33 | 2002 | |
| 2005/0042,151 Nonwoven composites and related products and processes | 37 | 2004 | |
|
|
|||
| 4,857,089 Ceramic honeycomb filter for purifying exhaust gases | 60 | 1988 | |
| 2008/0125,316 HONEYCOMB CATALYTIC STRUCTURE, PRECOATED SUPPORT FOR PRODUCING HONEYCOMB CATALYTIC STRUCTURE, AND PROCESS FOR PRODUCING HONEYCOMB CATALYTIC STRUCTURE | 7 | 2008 | |
|
|
|||
| 7,229,597 Catalyzed SCR filter and emission treatment system | 30 | 2003 | |
|
|
|||
| 5,522,218 Combustion exhaust purification system and method | 86 | 1994 | |
|
|
|||
| 6,805,849 System for NOx reduction in exhaust gases | 28 | 2001 | |
|
|
|||
| 4,963,332 Method for the catalytic removal of nitrogen oxides from exhaust gases by means of a reducing agent | 42 | 1989 | |
|
|
|||
| 2008/0250,775 Particulate Trap with Coated Fiber Layer and Exhaust System Having the Particulate Trap | 5 | 2008 | |
|
|
|||
| 2002/0004,897 Data processing apparatus for executing multiple instruction sets | 51 | 2000 | |
|
|
|||
| 5,279,997 Selective reduction of NO.sub.x | 14 | 1991 | |
|
|
|||
| 7,062,904 Integrated NO.sub.x and PM reduction devices for the treatment of emissions from internal combustion engines | 37 | 2005 | |
|
|
|||
| 4,902,487 Treatment of diesel exhaust gases | 135 | 1988 | |
|
|
|||
| 5,041,270 Method of purifying exhaust gases | 42 | 1989 | |
|
|
|||
| 6,314,722 Method and apparatus for emission control | 93 | 1999 | |
|
|
|||
| 4,404,007 Exhaust gas cleaning element | 32 | 1981 | |
|
|
|||
| 6,312,650 Silencer | 21 | 1999 | |
|
|
|||
| 6,415,602 Control system for mobile NOx SCR applications | 64 | 2000 | |
|
|
|||
| 5,928,981 Diesel catalytic converter | 24 | 1997 | |
|
|
|||
| 4,557,692 Occlusal splints and the method of manufacturing the same | 22 | 1983 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 8, 2014 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 8, 2018 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 8, 2022 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |