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US3475122A
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Recovery of sulfur dioxide from gas streams
Assignee: Veolia WTS Systems USA Inc
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Filing: 1967-03-22
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Granted: 1969-10-28
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Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Mcrae
- 👤 Daniel L Brown
- 👤 Stuart G Mcgriff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:45
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1456; B01D53/1468; B01D53/1481; B01D53/1493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2768945A
Cited
US3344050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |