US3592631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating zinc blast furnace gases
Assignee: Metallurgical Processes Ltd
•
Filing: 1968-04-11
•
Granted: 1971-07-13
•
Expires: 1988-04-11
Abstract
Abstract A DRY CROSSOVER DUCT WITHOUT IRRIGATION MEANS FOR CONVEYING ZINC BLAST FURNACE EXIT GASES, CONNECTS A CONDENSER WITH A SCRUBBING TOWER, THE DUCT BEING SLOPED UPWARDLY TOWARDS THE SCRUBBING TOWER TO RETURN LIQUID METAL TO THE CONDENSER. THE SCRBBING TOWER INCLUDES SPRAYS FOR COOLING AND SATURATING THE GASES IN SPACE WITHIN THE SCRUBBING TOWER IN ORDER TO AVOID ACCRETION AT THE END OF THE DUCT OR TOWER.
Inventors
- 👤 Claude Cattelain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:26
CPC Classifications
C; C22; C22B; C22B19/00; C22B19/04; C22B19/16; C22B19/18; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |