US3740332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating septic biological wastes in arctic climates
Assignee: Texaco Inc
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Filing: 1971-01-21
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Granted: 1973-06-19
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Expires: 1991-01-21
Abstract
Abstract SEPTIC BIOLOGICAL WASTES, INCUDING BOTH COMMERCIAL AND INDUSTRIAL WASTES PRODUCED IN ARCTIC CLIMATES, ARE RENDERED STERILE AND SUITABLE FOR DISCHARGE BY BEING PASSED TO A PRIMARY SETTLER WHERE SOLIDS CONTAINED THEREIN ARE SEPARATED FROM CLEAR EFFLUENT. THE SOLIDS ARE COKED IN THE LIQUID PHASE AND THE RESULTING COKE IS SEPARATED FROM THE LIQUID. THE DECOKED LIQUID IS MIXED WITH THE EFFLUENT FROM THE PRIMARY SETTLER AND THE RESULTING MIXTURE IS AIR OXIDIZED.
Inventors
- 👤 E Cole
- 👤 H Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:03
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/02; C02F1/025; C02F11/00; C02F11/06; C02F11/08; C02F9/00; C02F2103/00; C02F2103/005; Y; Y02; Y02W; Y02W10/00; Y02W10/30; Y02W10/37
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |