US4662899B1
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US4662899B1 - - Google Patents
Assignee: AMERICAN ENVIRONMENTAL INTERNA
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Filing: 1985-04-05
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Granted: 1990-01-16
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Expires: 2005-04-05
Abstract
Abstract A pollution control system includes a condenser and filtering unit for removing vaporized organic solvents and particulate matter. The condenser includes baffles that define vertical flow paths, and hot exhaust gases are directed from above to alternate flow paths to flow downward while atmospheric air is directed upwardly through the remaining flow paths to cool the exhaust gases and the heated air is used to maintain the atmospheric air above a selected temperature. The filter unit includes a horizontal movable filter which is automatically replaced with a new filter section when the pressure differential across the filter exceeds a certain level.
Inventors
- 👤 S Tandon Jag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:20
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/18; B01D46/42; B01D46/44; B01D46/46; B01D53/00; B01D53/002; B41; B41P; B41P2235/00; B41P2235/30; Y; Y10; Y10S; Y10S165/00; Y10S165/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |