US3761409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for the air oxidation of sour water
Assignee: Texaco Inc
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Filing: 1971-10-06
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Granted: 1973-09-25
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Expires: 1991-10-06
Abstract
Abstract A CONTINUOUS PROCESS FOR THE LIQUID PHASE, NON-CATALYTIC, AIR OXIDATION OF SOUR WATER IN WHICH THE SULFUR COMPOUNDS IN THE WATER ARE CONVERTED TO NON-POLLUTING, NONOXYGEN DEMANDING COMPOUNDS INVOLVES HEATING THE WATER AND OXIDIZING THE HEATED WATER WITH COUNTERCURRENT OR CO-CURRENT FLOW OF THE WATER AND OXIDIZING MEDIUM. THE PROCESS RAPIDLY CONVERTS OBJECTIONABLE SULFIDES AND INTERMEDIATE SULFUR COMPOUNDS SUCH AS THIOSULFATES, TETRATHIONATES, POLYTHIONATES, SULFITES AND POLYSULFIDES TO SULFATE.
Inventors
- 👤 Coy D Mc
- 👤 Eachern R Mc
- 👤 R Dille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:59
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/06; C02F11/08
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |