Patent EP0111161A2 successfully refreshed from Google Patents.
US2677657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating of sewage or other polluted liquids
Assignee: Individual
•
Filing: 1952-02-05
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Granted: 1954-05-04
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Expires: 1972-02-05
Abstract
No abstract record available.
Inventors
- 👤 Harry N Jenks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/121; C02F3/24; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
AN ACTIVATED SLUDGE PLANT THAT COMPRISES IN OPERATIVE COMBINATION, A DETAINING AND MIXING STATION PROVIDING TANK MEANS WHEREIN THERE IS DETAINED WHILE BEING MIXED LIQUID IN RELATIVE CONSTANT QUANTITIES; A RECIRCLING SUCTION AND PRESSURE DISCHARGE TYPE OF PUMP MEANS; AERATOR MEANS HAVING A LONGITUDINALLY AND HORIZONTALLY EXTENDING DECK SLOPING TRANSVERSELY AND DOWNWARDLY AND HAVING A LIQUID RECEIVING AND DISTRIBUTING TROUGH DISPOSED AT AND ALONG A HIGH OVERFLOW EDGE PORTION OF SAID DECK SECTION AND ALSO HAVING A COLLECTING LAUNDER DISPOSED AT AND ALONG THE LOW DISCHARGE EDGE OF SAID DECK SECTION; A SUCTION CONDUIT MEANS LEADING FROM SAID TANK MEANS TO SAID PUMP MEANS; A CONDUIT LEADING FROM SAID PUMP MEANS TO AFOREMENTIONED LIQUID RECEIVING AND DISTRIBUTING TROUGH; FLOW RETURN CONDUIT LEADING FROM SAID COLLECTING LAUNDER AND RETURNING LIQUID INTO TANK MEANS OF THE DETAINING AND MIXING SEC-
References Cited (Backward Citations)
US366333A
Cited
GB176494A
Cited
US2142196A
Cited
US2388795A
Cited
US2394413A
Cited
US2562510A
Cited
US2574685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |