US3401115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment system
Assignee: Sanitas Co Ltd
•
Filing: 1965-03-01
•
Granted: 1968-09-10
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Meyer Frederick William Albert
- 👤 Long Charles Alexander
- 👤 Lake Victor Masters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:39
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; C02F1/66; C02F1/72; C02F1/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A METHOD OF TREATING SEWAGE, COMPRISING ESTABLISHING A SOLUTION OF A CAUSTIC ALKALI IN WATER IN A TREATMENT SYSTEM WHICH IS CONNECTED TO OUTLETS OF ONE OR MORE RECEIVERS FOR SEWAGE AND TO FLUSHING INTLETS OF THE RECEIVERS, THE CONCENTRATION OF CAUSTIC ALKALI BEING SUFFICIENT TO MAKE THE SOLUTION GERMICIDAL; DELIVERING THE SOLUTION FROM THE SYSTEM TO THE INLETS AS REQUIRED, AND THEREUPON RECEIVING THE RESULTANT SOLUTION PLUS SEWAGE INTO THE SYSTEM, WHEREUPON THE CAUSTIC ALKALI REACTS WITH, BREAKS DOWN, AND STERILIZES THE SEWAGE; MAINTAINING THE CONCENTRATION OF THE SOLUTION APPROXIMATELY CONSTANT BY SUPPLYING ADDITIONAL CAUSTIC ALKALI INTO THE SYSTEM TO REPLACE THAT WHICH REACTS WITH THE SEWAGE; MAINTAINING THE TOTAL QUANTITY OF LIQUID IN THE SYSTEM APPROXIMATELY CONSTANT; AND ACCELERATING THE BREAKING DOWN OF CELLULOSE MATTER INCLUDED IN THE SEWAGE BY PASSING THE SOLUTION PLUS SEWAGE THROUGH A COMMINUTOR.
Claim 2
Independent Claim
140 words
A METHOD OF TREATING SEWAGE, COMPRISING ESTABLISHING A SOLUTION OF A CAUSTIC ALKALI IN WATER IN A TREATMENT SYSTEM WHICH IS CONNECTED TO OUTLETS OF ONE OR MORE RECEIVERS FOR SEWAGE AND TO FLUSHING INTLETS OF THE RECEIVERS, THE CONCENTRATION OF CAUSTIC ALKALI BEING SUFFICIENT TO MAKE THE SOLUTION GERMICIDAL; DELIVERING THE SOLUTION FROM THE SYSTEM TO THE INLETS AS REQUIRED, AND THEREUPON RECEIVING THE RESULTANT SOLUTION PLUS SEWAGE INTO THE SYSTEM, WHEREUPON THE CAUSTIC ALKALI REACTS WITH, BREAKS DOWN, AND STERILIZES THE SEWAGE; MAINTAINING THE CONCENTRATION OF THE SOLUTION APPROXIMATELY CONSTANT BY SUPPLYING ADDITIONAL CAUSTIC ALKALI INTO THE SYSTEM TO REPLACE THAT WHICH REACTS WITH THE SEWAGE; MAINTAINING THE TOTAL QUANTITY OF LIQUID IN THE SYSTEM APPROXIMATELY CONSTANT; AND ACCELERATING THE BREAKING DOWN OF CELLULOSE MATTER INCLUDED IN THE SEWAGE BY PASSING THE SOLUTION PLUS SEWAGE THROUGH A COMMINUTOR.
References Cited (Backward Citations)
US2709680A
Cited
US2858939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |