US3835018A
Expired / Lapsed
US
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Apparatus for the treatment by metallic ions of aqueous liquids
Assignee: DULAC FRANCOIS MARIE JACQUES
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Filing: 1972-01-19
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Granted: 1974-09-10
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Expires: 1992-01-19
Abstract
Abstract A DEVICE FOR LIQUID PURIFICATION INCLUDES A VAT PROVIDED WITH METALLIC ELECTRODES AND CONNECTED TO A CIRCULATING PUMP AND TO A FILTER CONTAINING AT LEAST ONE FILTERING LAYER OF LOW GRANULOMETRY BUILT UP FROM ACCUMULATION OF FLUOCCULATES. THE DEVICE IS PARTICULARLY SUITED FOR WATER TREATMENT.
Inventors
- 👤 L Casanovas
- 👤 J Vellas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:08
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/10; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/463; C02F1/001
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |