Patent US3795732A successfully refreshed from Google Patents.
US3795732A
Expired / Lapsed
US
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Desulfurization of flue gases
Assignee: Beazer East Inc
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Filing: 1971-12-17
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Granted: 1974-03-05
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Expires: 1991-12-17
Abstract
Abstract A PROCESS AND APPARATUS FOR REMOVING SULFUR OXIDES ARE FROM COMBUSTION GASES AND THE LIKE IN WHICH THE GASES ARE CONTACTED WITH ACNADIUM PENTOXIDE TO CONVERT ANY SULFUR DIOXIDES PRESENT THEREIN TO SULFUR TRIOXIDE TO CNVERT ANY SULFUR THE SULFUR TRIOXIDE WITH LITHIUM SULFATE WHICH IS CONVERTED TO LITHIUM PYROSULFATE. THE LITHIUM PYROSULFATE CAN BE CONVERTED BACK TO LITHIUM SULFATE FFOR REUSE IN THE SYSTEM AND SULFUR TRIOXIDE LIBERATED THEREBY USED IN THE PRODUCTION OF SULFURIC ACID.
Inventors
- 👤 J Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:26
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8603; B01D53/8609; C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |