US3556970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of effluents by the reverse osmosis process
Assignee: Pressed Steel Fisher Ltd
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Filing: 1968-03-19
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Granted: 1971-01-19
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Expires: 1988-03-19
Abstract
Abstract A PROCESS FOR THE TREATMENT OF SOLUTIONS AND MIXTURES, WHICH BECOME DILUTED BY RINSE WATER IN THE COURSE OF TREATMENT, SUCH AS A WATER-BORNE PAINT, USED TO COAT AN ARTICLE, DILUTED JUICES PARTICULARLY FRUIT JUICES OR DILUTED WOOD PULP IN WHICH THE CONTAMINATED RINSE WATER IS CONVEYED FROM A RINSING STATION DIRECTLY BACK TO A TREATMENT TANK AND THE THUS DILUTED CONTENTS OF THE TREATMENT TANK ARE PASSED AS AN EFFLUENT UNDER PRESSURE THROUGH A REVERSE OSMOSIS UNIT TO SEPARATE THE EFFLUENT INTO PARTS OF HIGH AND LOW CONCENTRATION OF THE ORIGINAL CONTENTS OF THE TREATMENT TANK. D R A W I N G
Inventors
- 👤 John F Wallace
- 👤 John G Ransome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/22; B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; B05; B05B; B05B14/00; B05B14/40; B05B14/46; B05B14/462
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |