Patent US3728245A successfully refreshed from Google Patents.
US3728245A
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US
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Apparatus for treating sewage
Assignee: COLE ENVIRONMENTAL INDUSTRIES Inc A DE CORP
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Filing: 1971-01-13
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Granted: 1973-04-17
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Expires: 1991-01-13
Abstract
Abstract THIS DISCLOSURE RELATES TO AN APPARATUS AND METHOD FOR TREATING DOMESTIC AND/OR INDUSTRIAL WASTE WATER TO RENDER THE SAME INTO A CONDITON FOR EITHER FURTHER REUSE IN INDUSTRIAL PROCESSING OR FOR OUTFLOW INTO NTURAL WATERS. THE TREATMENT UTILIZES THE PRINCIPLES OF ELECTROLYSIS TO IONIZE THE WATER UTILIZING THE SODIUM OF SODIUM CHLORIDE TO FORM SODIUM HYDROXIDE AND THE CHLORIDE AS A BLEACHING AGENT. THE TREATMENT TAKES PLACE IN A SIMPLE TWO STAGE CELL.
Inventors
- 👤 W Preis
- 👤 W Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:07
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/463; C02F1/46104; C02F1/467; C02F1/4672; C02F1/4674; C02F2001/007; C02F1/46109; C02F2001/46133; C02F2001/46152; C02F2101/00; C02F2101/30; C02F2101/32; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611; C02F2201/4612; C02F2201/46125; C02F2201/4613; C02F2301/00; C02F2301/02; C02F2301/022; C02F2301/08; C02F2303/00; C02F2303/04
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |