Patent US3565796A successfully refreshed from Google Patents.
US3565796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for increasing oxygen availability in sewage treatment
Assignee: Dominari Holdings Inc
•
Filing: 1970-02-11
•
Granted: 1971-02-23
•
Expires: 1990-02-11
Abstract
Abstract AN AEROBIC SEWAGE TREATMENT PROCESS MAKING AVAILABLE TO THE SEWAGE TREATING MICROORGANISMS A LARGE QUANTITY OF OXYGEN. THE OXYGEN AVAILABILITY IS INCREASED BY ADDING TO THE SEWAGE, IMMISCIBLE SUBSTANCES WHICH CAN SUSTAIN RELATIVELY HIGH CONCENTRATIONS OF DISSOLVED OXYGEN OR MISCIBLE SUBSTANCES WITH HIGH OXYGEN CARRYING CAPABILITIES AND WHICH CAN BE READILY SEPARATED FROM WATER.
Inventors
- 👤 Gilbert V Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:50
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/025; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |