US3563697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke abatement process
Assignee: R F DE CASTRO INTERPRISES Inc
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Filing: 1969-10-13
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Granted: 1971-02-16
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Expires: 1989-10-13
Abstract
Abstract A PROCESS OF ELIMINATING NOXIOUS ELEMENTS FROM A CONFINED STREAM OF SMOKE BEFORE BEING DISCHARGED FROM AN OUTLET INTO THE ATMOSPHERE, INCLUDES INJECTING AN OXIDIZING AGENT AND A MONOHYDRIC ALCOHOL CONTAINING NOT MORE THAN FOUR CARBON ATOMS INTO THE CONFINED STREAM TO INSURE MIXTURE OF THE NOXIOUS ELEMENTS WITH THE OXIDIZING AGENTS AND ALCOHOL, AND IGNITING SUCH MIXTURE TO CONSUME THE NOXIOUS ELEMENTS.
Inventors
- 👤 Raul F De Castro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/60
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |