US2666740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for purification of sewage
Assignee: Individual
•
Filing: 1947-12-04
•
Granted: 1954-01-19
•
Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Gordon Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/121; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
THE METHOD FOR PROVIDING FOR BACTERIAL PURIFICATION OF SEWAGE WHICH COMPRISES INTRODUCING A FIRST MASS OF EFFLUENT CONTAINING BOTH LIQUID AND SOLID MATTER DISCHARGED DURING A PERIOD INTO A FIRST ZONE, ENTRAINING OXYGEN IN THE INTRODUCED EFFLUENT, MOVING SUBSTANTIALLY ALL OF THE LIQUID AND SUSPENDED SOLID PORTION OF THE EFFLUENT INTO A SECOND ZONE AND FILTERING OXYGEN UPWARDLY THROUGH SETTLED SOLIDS IN THE FIRST ZONE BY INTRODUCING EFFLUENT CONTAINING ENTRAINED OXYGEN INTO THE LOWER PORTIONS OF THE FIRST ZONE DURING APPROXIMATELY THE FIRST SUCCEEDING PERIOD TO FORM A SECOND MASS OF EFFLUENT THEREIN, MOVING SUBSTANTIALLY ALL OF THE LIQUID AND SUSPENDED SOLID PORTIONS OF THE FIRST AND SECOND MASSES OF EFFLUENT INTO A THIRD AND SECOND ZONE RESPECTIVELY AND FILTERING OXYGEN UPWARDLY THROUGH SETTLED SOLIDS IN THE FIRST ZONE BY INTRODUCING EFFLUENT CONTAINING ENTRAINED OXYGEN INTO THE LOWER PORTION OF SAID FIRST ZONE DURING APPROXIMATELY THE SECOND SUCCEEDING PERIOD TO FORM A THIRD MASS OF EFFLUENT THEREIN, AND THEN REMOVING LIQUID AND SUSPENDED SOLID EFFLUENT FROM THE THIRD ZONE AND DISCHARGING THE LAST MENTIONED EFFLUENT INTO A FILTER BED BY INTRODUCING EFFLUENT INTO THE FIRST ZONE.
Claim 2
Independent Claim
186 words
THE METHOD FOR PROVIDING FOR BACTERIAL PURIFICATION OF SEWAGE WHICH COMPRISES INTRODUCING A FIRST MASS OF EFFLUENT CONTAINING BOTH LIQUID AND SOLID MATTER DISCHARGED DURING A PERIOD INTO A FIRST ZONE, ENTRAINING OXYGEN IN THE INTRODUCED EFFLUENT, MOVING SUBSTANTIALLY ALL OF THE LIQUID AND SUSPENDED SOLID PORTION OF THE EFFLUENT INTO A SECOND ZONE AND FILTERING OXYGEN UPWARDLY THROUGH SETTLED SOLIDS IN THE FIRST ZONE BY INTRODUCING EFFLUENT CONTAINING ENTRAINED OXYGEN INTO THE LOWER PORTIONS OF THE FIRST ZONE DURING APPROXIMATELY THE FIRST SUCCEEDING PERIOD TO FORM A SECOND MASS OF EFFLUENT THEREIN, MOVING SUBSTANTIALLY ALL OF THE LIQUID AND SUSPENDED SOLID PORTIONS OF THE FIRST AND SECOND MASSES OF EFFLUENT INTO A THIRD AND SECOND ZONE RESPECTIVELY AND FILTERING OXYGEN UPWARDLY THROUGH SETTLED SOLIDS IN THE FIRST ZONE BY INTRODUCING EFFLUENT CONTAINING ENTRAINED OXYGEN INTO THE LOWER PORTION OF SAID FIRST ZONE DURING APPROXIMATELY THE SECOND SUCCEEDING PERIOD TO FORM A THIRD MASS OF EFFLUENT THEREIN, AND THEN REMOVING LIQUID AND SUSPENDED SOLID EFFLUENT FROM THE THIRD ZONE AND DISCHARGING THE LAST MENTIONED EFFLUENT INTO A FILTER BED BY INTRODUCING EFFLUENT INTO THE FIRST ZONE.
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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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |