US3784676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing sulphur from hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1971-04-30
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Granted: 1974-01-08
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Expires: 1991-04-30
Abstract
Abstract PRODUCTION OF AN SO2 FREE GAS BY OXIDATION OF SULFUR CONTAINING MATERIALS IN A FLUIDIZED BED OF CALCIUM OR MAGNESIUM OXIDE WITH REGENERATION OF THE OXIDES FROM SULFATES FORMED IN THE OXIDATION.
Inventors
- 👤 G Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:12
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60
Claims Analysis
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |