Patent US5820832A successfully refreshed from Google Patents.
US5820832A
Expired / Lapsed
US
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Plate-type catalytic converter
Assignee: Johnson Matthey Catalysts Germany GmbH
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Filing: 1997-05-16
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Granted: 1998-10-13
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Expires: 2017-05-16
Abstract
Abstract A plate-type catalytic converter includes a holder device and plates being coated with a catalytically active composition, being held one above the other in the holder device and extending in a main flow direction. The plates include first and second adjacent plates forming at least one reaction chamber. At least the first plate has an approximately corrugated first structure oriented obliquely relative to the main flow direction for deflecting a flow medium flowing along the first structure from the main flow direction.
Inventors
- 👤 Klaus Huttenhofer
- 👤 Josef-Konrad Beer
- 👤 Heimo Friede
- 👤 Hendrik Lammers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:15
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2814; F01N3/2821; F15; F15D; F15D1/00; F15D1/14; B; B01; B01J; B01J35/00; B01J35/50; B01J35/56; F01N2330/00; F01N2330/30; F01N2330/32; F01N2330/321; F01N2330/323; F01N2330/42; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/12354
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A plate-type catalytic converter, comprising: a holder device; plates being coated with a catalytically active composition, being held one above the other in said holder device and extending along a main flow direction; said plates including first and second adjacent plates forming at least one reaction chamber; and said first plate having a corrugated first structure formed of wave troughs and wave crests oriented obliquely relative to said main flow direction for deflecting a flow medium flowing along said first structure from said main flow direction; and said second plate having a second structure formed of wave troughs and wave crests oriented parallel to said main flow direction.
Claim 2
Dependent Claim
108 words
A plate-type catalytic converter, comprising: a holder device; plates being coated with a catalytically active composition, being held one above the other in said holder device and extending along a main flow direction; said plates including first and second adjacent plates forming at least one reaction chamber; and said first plate having a corrugated first structure formed of wave troughs and wave crests oriented obliquely relative to said main flow direction for deflecting a flow medium flowing along said first structure from said main flow direction; and said second plate having a second structure formed of wave troughs and wave crests oriented parallel to said main flow direction.
Claim 3
Dependent Claim
28 words
The plate-type catalytic converter according to claim 1, wherein said wave crests of said first structure extend obliquely along the entire first plate without a change of direction.
Claim 4
Dependent Claim
33 words
The plate-type catalytic converter according to claim 1, wherein said wave crests of said first structure have an orientation, as viewed in said main flow direction, in at least two different oblique directions.
Claim 5
Dependent Claim
29 words
The plate-type catalytic converter according to claim 1, wherein said first plate has plate parts at which the flow medium is deflected and apertures formed in said plate parts.
Claim 6
Dependent Claim
26 words
The plate-type catalytic converter according to claim 1, wherein said first and second plates are retained one above the other in alternation in said holder device.
Claim 7
Dependent Claim
30 words
The plate-type catalytic converter according to claim 1, wherein said plates are spaced apart from one another by said wave troughs and wave crests of said first and second structures.
References Cited (Backward Citations)
US3839535A
Cited
DE2458888A1
Cited
GB2001547A
Cited
DE2853023A1
Cited
GB2079174A
Cited
EP0186801A2
Cited
US4987034A
Cited
US4942020A
Cited
DE8901773U1
Cited
WO1991001178A1
Cited
US5118475A
Cited
DE4123161A1
Cited
US5384099A
Cited
US5460790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-12 | 2002-04-13 | 2002-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-12 | 2006-04-13 | 2006-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-12 | 2010-04-13 | 2010-10-13 | $7700.00 | Window Closed / Lapsed |