US3565777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing sulfur dioxide from stack gases
Assignee: Sunoco Inc
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Filing: 1968-10-04
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Granted: 1971-02-23
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Expires: 1988-10-04
Abstract
Abstract A METHOD AND APPARATUS FOR REMOVING SULFUR DIOXIDE FROM STACK GASES WHEREIN THE STACK GAS IS FIRST SUBJECTED TO ELECTRICALLY CHARGED WATER DROPLETS AND SUBSEQUENTLY TO ULTRAVIOLET LIGHT.
Inventors
- 👤 James L Lauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:19
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B03; B03C; B03C3/00; C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325; C02F2201/00; C02F2201/32; C02F2201/322; C02F2201/3228; C02F2201/328
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |