US2830947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming and maintaining an organic filter
Assignee: Individual
•
Filing: 1954-10-26
•
Granted: 1958-04-15
•
Expires: 1974-10-26
Abstract
No abstract record available.
Inventors
- 👤 Llewellyn B Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:46
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/06; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE STEPS IN THE METHOD OF PURYING SEWAGE IN A NUMBER OF SUCCESSIVE TREATMENT WHICH CONSISTS IN FLOWING THE TREATED LIQUID CONTAINING LESS THAN FIFTY PARTS PER MILLION OF SOLIDS AT A PRESSURE EQUAL TO A HEAD OF A FEW INCHES OF WATER INTO A FINAL AND QUIESCENT BODY OF LIQUID PASSING THE LIQUID THROUGH AN ORGANIC FILTER IMMEDIATELY BEFORE DISCHARGING THE LIQUID FROM THE SYSTEM, THUS PREVENTING A GREAT PORTION OF THE COLLOIDAL PARTICLES FROM PASSING OUT WITH THE DISCHARGE FLUID, AND LOWERING THE LIQUID LEVEL OF SAID QUIESCENT BODY OF THE TREATED LIQUID BENEATH THE FILTER AT A NUMBER OF INTERVALAS DURING A 24 HOUR DAY, FOR A PERIOD OF LESS THAN THAT WHICH WOULD CAUSE THE ORGANISM TO DIE FOR LACK OF MOISTURE.
Claim 2
Dependent Claim
126 words
THE STEPS IN THE METHOD OF PURYING SEWAGE IN A NUMBER OF SUCCESSIVE TREATMENT WHICH CONSISTS IN FLOWING THE TREATED LIQUID CONTAINING LESS THAN FIFTY PARTS PER MILLION OF SOLIDS AT A PRESSURE EQUAL TO A HEAD OF A FEW INCHES OF WATER INTO A FINAL AND QUIESCENT BODY OF LIQUID PASSING THE LIQUID THROUGH AN ORGANIC FILTER IMMEDIATELY BEFORE DISCHARGING THE LIQUID FROM THE SYSTEM, THUS PREVENTING A GREAT PORTION OF THE COLLOIDAL PARTICLES FROM PASSING OUT WITH THE DISCHARGE FLUID, AND LOWERING THE LIQUID LEVEL OF SAID QUIESCENT BODY OF THE TREATED LIQUID BENEATH THE FILTER AT A NUMBER OF INTERVALAS DURING A 24 HOUR DAY, FOR A PERIOD OF LESS THAN THAT WHICH WOULD CAUSE THE ORGANISM TO DIE FOR LACK OF MOISTURE.
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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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |