US Patent No: 7,981,498
Number of patents in Portfolio can not be more than 2000
Honeycomb body with internal cavities
Stats
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Jul 19, 2011
Issued date -
Aug 20, 2007
filing date -
11/841,012
serial no -
In Force
status
Importance
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Abstract
A honeycomb body, especially a particulate filter, particularly for motor vehicle exhaust purification, includes inner walls defining passages with an entry and exit. Cavities free of walls in at least one subregion contain at least one spherical free space having a largest cross-sectional area at least 10 times a cross-sectional area of the passages in the subregion. The honeycomb body is wound, twisted or layered from at least one metal sheet having layers with a structuring forming the passages, at least in the subregion. The sheet-metal layers have holes with an area greater than 10 times the cross-sectional area of the passages in the subregion. The holes form cavities in at least 5 successive layers overlapping with an area at least 10 times the cross-sectional area of the passages in the subregion. The holes are double or more than triple the hydraulic diameter of the passages opening into the cavity.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,139,844 Honeycomb body, in particular catalyst carrier body, formed of a plurality of entwined bundles of sheet metal | 34 | 1989 | |
| 5,045,403 Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles | 35 | 1990 | |
| 5,105,539 Process for manufacturing a honeycomb body, in particular a catalyst carrier body, formed of a plurality of entwined bundles of sheet metal | 39 | 1991 | |
| 5,130,208 Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles | 23 | 1991 | |
| 5,157,010 Metallic honeycomb as catalyst carrier with microstructures for flow mixing | 27 | 1991 | |
| 5,403,559 Device for cleaning exhaust gases of motor vehicles | 32 | 1993 | |
| 6,190,784 Conical honeycomb body with longitudinal structures | 23 | 1998 | |
| 7,083,860 Metallic honeycomb body having at least partially perforated sheet-metal layers | 2 | 2005 | |
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| 4,803,189 Catalyst carrier of metallic honeycomb having a supporting wall and a method for producing the same | 23 | 1987 | |
| 4,832,998 Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same | 43 | 1987 | |
| 4,946,822 Catalyst carrier body having a supporting wall and a method for producing the same | 17 | 1988 | |
| 4,923,109 Method for producing a honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions | 60 | 1989 | |
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| 4,283,210 Ceramic honeycomb filter and a method of producing the same | 26 | 1980 | |
| 4,568,402 Method of sealing open ends of ceramic honeycomb structural body | 25 | 1983 | |
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| 4,455,281 Plate-shaped catalyst unit for NOx reduction of exhaust gas | 20 | 1981 | |
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| 7,030,059 Metal catalyst carrier | 2 | 2003 | |
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| 5,384,099 Core element for catalytic converter | 11 | 1993 | |
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| 2002/0162,319 Method for increasing internal combustion engine exhaust gas catalyst durability | 8 | 2001 | |
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| 5,567,395 Catalyst carrier for a catalytic converter for purifying an exhaust gas in an internal combustion engine | 10 | 1995 | |
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| 5,820,835 Assembly and method for making catalytic converter structure | 13 | 1996 | |
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| 4,390,355 Wall-flow monolith filter | 42 | 1982 | |
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| 5,853,402 Absorbent article having a composite absorbent core | 35 | 1997 | |
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| 5,278,125 Support structure for an exhaust gas purifying catalyst | 18 | 1992 | |
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| 6,761,980 Metallic catalyst carrier | 5 | 2002 | |
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| 5,384,100 Baffle assembly for catalytic converter | 9 | 1993 | |
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| 4,273,681 Support matrix for a catalytic reactor for scrubbing exhaust gases in an internal combustion engine | 43 | 1980 | |
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 | Jan 19, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 19, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 19, 2023 |
| 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 |