US5820832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 10:21
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.
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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 |