US3591449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coking and oxidizing of waste liquors
Assignee: Texaco Inc
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Filing: 1968-11-29
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Granted: 1971-07-06
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Expires: 1988-11-29
Abstract
Abstract A PROCESS FOR TREATING AQUEOUS ORGANIC WASTE LIQUOR INCLUDING THE STEPS OF COKING THE WASTE LIQUOR, IN THE ABSENCE OF FREE OXYGEN, THEREBY FORMING A COKE-CONTAINING AQUEOUS SLURRY, STEAM, GASES, AND AN EFFLUENT, SEPARATING AQUEOUS LIQUID FROM SAID SLURRY AND CONBINING SAID AQUEOUS LIQUID WITH SAID EFFLUENT, AND AIR-OXIDIZING THE THUS COMBINED LIQUIDS TO YIELD A HOT EFFLUENT HAVING A REDUCED CHEMICAL OXYGEN DEMAND.
Inventors
- 👤 Howard V Hess
- 👤 Edward L Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:36
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/025; C02F11/00; C02F11/18; Y; Y10; Y10S; Y10S210/00; Y10S210/928
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |