US3060118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment
Assignee: STWB Inc
•
Filing: 1958-05-16
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Granted: 1962-10-23
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Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Eugene W Schoeffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:47
CPC Classifications
C; C02; C02F; C02F11/00; C02F1/00; C02F1/02; C02F1/04; C02F1/048; C02F11/06; C02F11/08; C02F11/12; C02F11/13; C02F3/00; C02F3/02; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A SEWAGE TREATMENT PROCESS, THE STEPS OF: BIOLOGICALLY TREATING AQUEOUS SEWAGE TO SETTLE SLUDGE THEREFROM; CHEMICALLY OXIDIZING FROM 60 TO 85 PERCENT OF THE OXIDIZABLE MATTER OF SAID SLUDGE TO CARBON DIOXIDE AND WATER THEREBY SOLUBILIZING SUBSTANTIALLY ALL OF THE ORGANIC SOLIDS PRESENT IN SAID SLUDGE; EVAPORATING A SUBSTANTIAL PORTION OF THE WATER FROM THE OXIDATION PRODUCT; SEPARATING THE WATER INSOLUBLE MATTER, PRIMARILY INORGANIC IN CHARACTER, FROM THE PARTIALLY EVAPORATED OXIDATION PRODUCT TO LEAVE A RESIDUAL AQUEOUS LIQUID PHASE CONTAINING THE SOLUBILIZED ORGANIC MATTER CONCENTRATED THEREIN; AND RETURNING SAID AQUEOUS LIQUID PHASE TO SAID BIOLOGICAL TREATMENT STEP TO SERVE AS A NUTRIENT FOR THE MICRO-ORGANISMS THEREIN
Claim 2
Dependent Claim
107 words
IN A SEWAGE TREATMENT PROCESS, THE STEPS OF: BIOLOGICALLY TREATING AQUEOUS SEWAGE TO SETTLE SLUDGE THEREFROM; CHEMICALLY OXIDIZING FROM 60 TO 85 PERCENT OF THE OXIDIZABLE MATTER OF SAID SLUDGE TO CARBON DIOXIDE AND WATER THEREBY SOLUBILIZING SUBSTANTIALLY ALL OF THE ORGANIC SOLIDS PRESENT IN SAID SLUDGE; EVAPORATING A SUBSTANTIAL PORTION OF THE WATER FROM THE OXIDATION PRODUCT; SEPARATING THE WATER INSOLUBLE MATTER, PRIMARILY INORGANIC IN CHARACTER, FROM THE PARTIALLY EVAPORATED OXIDATION PRODUCT TO LEAVE A RESIDUAL AQUEOUS LIQUID PHASE CONTAINING THE SOLUBILIZED ORGANIC MATTER CONCENTRATED THEREIN; AND RETURNING SAID AQUEOUS LIQUID PHASE TO SAID BIOLOGICAL TREATMENT STEP TO SERVE AS A NUTRIENT FOR THE MICRO-ORGANISMS THEREIN
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |