US3047492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage digesting process
Assignee: Individual
•
Filing: 1959-01-22
•
Granted: 1962-07-31
•
Expires: 1979-01-22
Abstract
No abstract record available.
Inventors
- 👤 Anthony A Gambrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:13
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1221; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
THE PROCESS OF SEWAGE TREATMENT WHICH COMPRISES EXPOSING RAW SEWAGE TO AEROBIC TREATMENT THROUGH THE FORCED INTRODUCTION OF ATMOSPHERIC AIR THEREINTO IN A FIRST ZONE, MOVING THE TREATED SEWAGE INTO A SECOND ZONE AND SETTLING THE TREATED SEWAGE TO SEPARATE SLUDGE AND EFFLUENT THEREFROM, DISCHARGING SAID EFFLUENT FROM SAID SECOND ZONE, MOVING ABOUT 88% OF SAID SEPARATED SLUDGE BACK TO SAID FIRST ZONE AND MIXING THE SAME WITH RAW SEWAGE BEING INTRODUCED THEREINTO, RE-EXPOSING SAID 88% OF SAID SEPARATED SLUDGE TO SAID AEROBIC TREATMENT THROUGH SAID FORCED INTRODUCTION OF ATMOSPHERIC AIR THEREINTO, MOVING THE REMAINING 12% OF SAID SEPARATED SLUDGE TO A THIRD ZONE AND EXPOSING SAID 12% OF SAID SEPARATED SLUDGE TO AEROBIC DIGESTION IN SAID THIRD ZONE THROUGH THE FORCED INTRODUCTION OF ATMOSPHERIC AIR THEREINTO FOR A PERIOD OF TIME SUFFICIENT TO COMPLETELY DIGEST SAID LAST-MENTIONED SLUDGE AND FORM A CLEAR EFFLUENT, AND DISCHARGING SAID CLEAR EFFLUENT INTO SAID FIRST AND SECOND ZONES.
Claim 2
Dependent Claim
155 words
THE PROCESS OF SEWAGE TREATMENT WHICH COMPRISES EXPOSING RAW SEWAGE TO AEROBIC TREATMENT THROUGH THE FORCED INTRODUCTION OF ATMOSPHERIC AIR THEREINTO IN A FIRST ZONE, MOVING THE TREATED SEWAGE INTO A SECOND ZONE AND SETTLING THE TREATED SEWAGE TO SEPARATE SLUDGE AND EFFLUENT THEREFROM, DISCHARGING SAID EFFLUENT FROM SAID SECOND ZONE, MOVING ABOUT 88% OF SAID SEPARATED SLUDGE BACK TO SAID FIRST ZONE AND MIXING THE SAME WITH RAW SEWAGE BEING INTRODUCED THEREINTO, RE-EXPOSING SAID 88% OF SAID SEPARATED SLUDGE TO SAID AEROBIC TREATMENT THROUGH SAID FORCED INTRODUCTION OF ATMOSPHERIC AIR THEREINTO, MOVING THE REMAINING 12% OF SAID SEPARATED SLUDGE TO A THIRD ZONE AND EXPOSING SAID 12% OF SAID SEPARATED SLUDGE TO AEROBIC DIGESTION IN SAID THIRD ZONE THROUGH THE FORCED INTRODUCTION OF ATMOSPHERIC AIR THEREINTO FOR A PERIOD OF TIME SUFFICIENT TO COMPLETELY DIGEST SAID LAST-MENTIONED SLUDGE AND FORM A CLEAR EFFLUENT, AND DISCHARGING SAID CLEAR EFFLUENT INTO SAID FIRST AND SECOND ZONES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |