US2723231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment
Assignee: Dorr Oliver Inc
•
Filing: 1952-04-08
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Granted: 1955-11-08
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Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Robert P Logan
- 👤 Anthony J Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:32
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1215; C02F3/121; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
281 words
THE CONTINOUS PROCESS OF PURIGANICALLY POLLUTED LIQUIDS SUCH AS RAW SEWAGE AND THE LIKE BY MEANS OF BIOLOGIC AEROBIC TREATMENT, WHICH COMPRISES ESTABLISHING AND MAINTAINING AN UPFLOWING STREAM OF SEWAGE A SLUDGE BLANKET ZONE OF SEWAGE SOLIDS IN MOTION IN THE BLANKET AND WITH THE BLANKET OVERLAIN BY A LAYER OF CLARIFIED LIQUOR FROM WHICH SUCH LIQUOR OVERFLOWS; WITHDRAWING SLUDGE FROM SAID BLANKET AT A CONTROLLED RATE AND SUBJECTING A QUANTITY THEREOF TO BIOLOGIC AEROBIC TREATMENT BY DETENTION IN A POOL CONTINUOUSLY PROVIDING A BIO-CHEMICAL TREATMENT ZONE WITH AEROBIC ORGANISMS ACTIVE THEREIN IN SUFFICIENT QUANTITY, SUFFICIENTLY LONG, AND SUFFICIENTLY OXYGENATED TO HAVE A SIGNIFICANT QUANTITY OF ORGANIC SEWAGE MATTER CONVERTED INTO BIOLOGIC FLOC STRUCTURES POTENTIALLY ABSORPTION AND ADSORPTIVE WITH RESPECT TO DISSOLVED AND COLLODIAL MATTER AS WELL AS ADAPTED TO ENTRAP AND ENTANGLE SUSPENDED MATTER CONTAINED IN THE SEWAGE; RECYCLING A SIGNIFICANT QUANTITY OF SUCH FLOC STRUCTURES TO SAID BLANKET TO INTERMINGLE WITH SEWAGE CONTINOSTRUCTURES TO SAID BLANKET BLANKET WHEREBY SUCH FLOC STRUCTURES ABSORB AND ADSORB QUANTITIES OF SAID DISSOLVED AND COLLODIAL SEWAGE MATTER TO FORM COMPOSITE FLOC STRUCTURES WHILE ENTRAPPING A QUANTITY OF SAID SUSPENDED SEWAGE MATTER, WHEREBY SAID SLUDGE BLANKET ZONE ACTS AS A BIO-PHYSICAL TREATMENT ZONE WITH RESPECT TO THE FORMATION OF SUCH COMPOSITE FLOC STRUCTURES AND AS DISTINCT FROM THE FUNCTION OF SAID BIO-CHEMICAL TREATMENT ZONE, WITH A SIGNIFICANT QUANTITY OF SUCH COMPOSITE FLOC STRUCTURES CARRYING WITH THEM AND BETWEEN THEM A QUANTITY OF RAW SEWQAGE SOLIDS CONTAINED IN SAID SLUDGE THAT IS BEING WITHDRAWN FROM SAID BLANKET ZONE FOR TREATMENT IN SAID BIO-CHEMICAL ZONE; AND DIVERTING A QUANTITY OF SLUDGE CONTAINING SAID COMPOSITE FLOC STRUCTURES FROM SAID BLANKET ZONE TO AN OUTSIDE PLACE FOR FURTHER DISPOSAL.
Claim 2
Dependent Claim
281 words
THE CONTINOUS PROCESS OF PURIGANICALLY POLLUTED LIQUIDS SUCH AS RAW SEWAGE AND THE LIKE BY MEANS OF BIOLOGIC AEROBIC TREATMENT, WHICH COMPRISES ESTABLISHING AND MAINTAINING AN UPFLOWING STREAM OF SEWAGE A SLUDGE BLANKET ZONE OF SEWAGE SOLIDS IN MOTION IN THE BLANKET AND WITH THE BLANKET OVERLAIN BY A LAYER OF CLARIFIED LIQUOR FROM WHICH SUCH LIQUOR OVERFLOWS; WITHDRAWING SLUDGE FROM SAID BLANKET AT A CONTROLLED RATE AND SUBJECTING A QUANTITY THEREOF TO BIOLOGIC AEROBIC TREATMENT BY DETENTION IN A POOL CONTINUOUSLY PROVIDING A BIO-CHEMICAL TREATMENT ZONE WITH AEROBIC ORGANISMS ACTIVE THEREIN IN SUFFICIENT QUANTITY, SUFFICIENTLY LONG, AND SUFFICIENTLY OXYGENATED TO HAVE A SIGNIFICANT QUANTITY OF ORGANIC SEWAGE MATTER CONVERTED INTO BIOLOGIC FLOC STRUCTURES POTENTIALLY ABSORPTION AND ADSORPTIVE WITH RESPECT TO DISSOLVED AND COLLODIAL MATTER AS WELL AS ADAPTED TO ENTRAP AND ENTANGLE SUSPENDED MATTER CONTAINED IN THE SEWAGE; RECYCLING A SIGNIFICANT QUANTITY OF SUCH FLOC STRUCTURES TO SAID BLANKET TO INTERMINGLE WITH SEWAGE CONTINOSTRUCTURES TO SAID BLANKET BLANKET WHEREBY SUCH FLOC STRUCTURES ABSORB AND ADSORB QUANTITIES OF SAID DISSOLVED AND COLLODIAL SEWAGE MATTER TO FORM COMPOSITE FLOC STRUCTURES WHILE ENTRAPPING A QUANTITY OF SAID SUSPENDED SEWAGE MATTER, WHEREBY SAID SLUDGE BLANKET ZONE ACTS AS A BIO-PHYSICAL TREATMENT ZONE WITH RESPECT TO THE FORMATION OF SUCH COMPOSITE FLOC STRUCTURES AND AS DISTINCT FROM THE FUNCTION OF SAID BIO-CHEMICAL TREATMENT ZONE, WITH A SIGNIFICANT QUANTITY OF SUCH COMPOSITE FLOC STRUCTURES CARRYING WITH THEM AND BETWEEN THEM A QUANTITY OF RAW SEWQAGE SOLIDS CONTAINED IN SAID SLUDGE THAT IS BEING WITHDRAWN FROM SAID BLANKET ZONE FOR TREATMENT IN SAID BIO-CHEMICAL ZONE; AND DIVERTING A QUANTITY OF SLUDGE CONTAINING SAID COMPOSITE FLOC STRUCTURES FROM SAID BLANKET ZONE TO AN OUTSIDE PLACE FOR FURTHER DISPOSAL.
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) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |