Patent US3660284A successfully refreshed from Google Patents.
US3660284A
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US
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Method for water and wastewater treatment
Assignee: THOMAS R CAMP
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Filing: 1970-04-09
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Granted: 1972-05-02
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Expires: 1990-04-09
Abstract
Abstract INCREASING THE EFFICIENCY OF CONTINUOUS FLOW WATER AND WASTEWATER TREATMENT PLANTS BY MIXING THE WATER OR WASTEWATER WITH A FLOC FORMING CHEMICAL IN A FIRST MIXING STAGE AT A SPEED EFFECTING A MEAN VELOCITY GRADIENT CORRESPONDING TO A FLOW VOLUME CONCENTRATION LESS THAN 300 PARTS PER MILLION UNTIL FLOCCULATION IS SUBSTANTIALLY COMPLETE AND THEN EITHER PASSING IT THROUGH A RAPID FILTER OR ALTERATIVELY MIXING IT IN A SECOND MIXING STAGE AT A LESSER SPEED EFFECTING A VELOCITY GRADIENT CORRESPONDING TO A SELECTED EFFUENT FLOC VOLUME CONCENTRATION GREATER THAN 300 PARTS PER MILLION BEFORE PASSING ON TO SUBSEQUENT TREATMENT SUCH AS SETTLING ND FILTERING.
Inventors
- 👤 Thomas R Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:23
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |