US3068172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of clarifying liquid
Assignee: Suez International SAS
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Filing: 1960-10-12
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Granted: 1962-12-11
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Expires: 1980-10-12
Abstract
No abstract record available.
Inventors
- 👤 Leviel Roger
- 👤 Croce-Spinelli Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:49
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2405; B01D21/0039; B01D21/0042; B01D21/2427; C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A METHOD OF CLARIFYING LIQUID CONTAINING SUSPENDED SOLID PARTICLES, THE STEPS OF FORMING A BODY OF SAID LIQUID CONTAINING IN ITS LOWER REGION A BED OF SLUDGE PARTICLES SUSPENDED IN SAID LIQUID, IN ITS UPPER REGION A CLARIFICATION ZONE AND SUBSTANTIALLY AT ITS TOP A WITHDRAWAL ZONE FOR CLARIFIED LIQUID; INTRODUCING DURING INTRODUCTION PERIODS SPACED FOR EACH OTHER BY INTERMITTENT SETTLING PERIODS AND STARTING UPON TERMINATION OF THE PRECEDING INTERMITTENT SETTLING PERIOD, AT THE BOTTOM OF SAID BED OF SLUDGE LIQUID CONTAINING SOLID PARTICLES AND TO THE CLARIFIED AT A SPEED EXCEEDING THE PRECIPATION RATE OF THE SLUDGE PARTICLES IN SAID BED OF SLUDGE TO SUCH AN EXTENT THAT SLUDGE PARTICLES OF SAID BED OF SLUDGE WILL BE LIFTED, EXPANDING SAID BED OF SLUDGE IN UPWARD DIRECTION ADN SIMULTANEOUSLY DISPLACING AT LEAST PART OF THE CLARIFIED LIQUID IN SAID CLARIFICATION ZONE INTO SAID WITHDRAWAL ZONE, SAID INTRODUCTION PERIODS STARTING UPON TERMINATION OF THE PRECEDING INTERMITTENT SETTLING PERIOD BEING OF SUCH SHORT
Claim 2
Dependent Claim
162 words
IN A METHOD OF CLARIFYING LIQUID CONTAINING SUSPENDED SOLID PARTICLES, THE STEPS OF FORMING A BODY OF SAID LIQUID CONTAINING IN ITS LOWER REGION A BED OF SLUDGE PARTICLES SUSPENDED IN SAID LIQUID, IN ITS UPPER REGION A CLARIFICATION ZONE AND SUBSTANTIALLY AT ITS TOP A WITHDRAWAL ZONE FOR CLARIFIED LIQUID; INTRODUCING DURING INTRODUCTION PERIODS SPACED FOR EACH OTHER BY INTERMITTENT SETTLING PERIODS AND STARTING UPON TERMINATION OF THE PRECEDING INTERMITTENT SETTLING PERIOD, AT THE BOTTOM OF SAID BED OF SLUDGE LIQUID CONTAINING SOLID PARTICLES AND TO THE CLARIFIED AT A SPEED EXCEEDING THE PRECIPATION RATE OF THE SLUDGE PARTICLES IN SAID BED OF SLUDGE TO SUCH AN EXTENT THAT SLUDGE PARTICLES OF SAID BED OF SLUDGE WILL BE LIFTED, EXPANDING SAID BED OF SLUDGE IN UPWARD DIRECTION ADN SIMULTANEOUSLY DISPLACING AT LEAST PART OF THE CLARIFIED LIQUID IN SAID CLARIFICATION ZONE INTO SAID WITHDRAWAL ZONE, SAID INTRODUCTION PERIODS STARTING UPON TERMINATION OF THE PRECEDING INTERMITTENT SETTLING PERIOD BEING OF SUCH SHORT
References Cited (Backward Citations)
US2245587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |