US3268443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the treatment of waste liquors with flocculating agent recovery
Assignee: Individual
•
Filing: 1965-05-05
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Granted: 1966-08-23
•
Expires: 1985-05-05
Abstract
No abstract record available.
Inventors
- 👤 Everett D Cann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
IN A PROCESS FOR THE TREATMENT OF INDUSTRIAL AND DOMESTIC WAST LIQUORS CONTAINING SUSPENDED SOLIDS WHEREIN SAID SOLIDS ARE SEPARATED FROM SAID WAST LIQUORS BY INTRODUCING INTO A WASTE LIQUOR A FLOCCULATING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFATES OF IRON AND ALUMINUM UNDER ALKALINE TO NEUTRAL CONDITIONS EFFECTIVE TO CONVERT THE FLOCCULATING AGENT TO ITS HYDROXIDE AND THEREBY FORM A FLUOCCULANT CONCENTRITE CONTAINING THE HYDROXIDE OF SAID FLOCCULATING AGENT AND THE ORIGINALLY SUSPENDED SOLIDS, THE IMPROVED METHOD OF RECOVERING THE RECYCLING SAID FLOCCULATING AGENT AND OF RECOVERING AND RECYCLING SAID SOLIDS WHICH COMPRISES: CONTACTING SAID CONCENTRATE WITH AT LEAST ONE SULFUR OXIDE GAS IN AN AMOUNT SUFFICIENT TO CONVERT THE HYDROXIDE OF SAID FLOCCULATING AGENT TO A MEMBER OF THE GROUP CONSISTING OF SOLFATES, SULFITES, AND BISULFITES AND WITH OXYGEN IN AN AMOUNT SUFFICIENT TO CONVERT SAID SULFITES AND BISULFITES TO SULFATES TO THEREBY REDISOLVE SAID FLOCCULATING AGENT; SEPARATING THE RESULTING SOLUBLE FLOCCULATING AGENT FROM THE SUSPENDED WASTE SOLIDS IN SAID
Claim 2
Dependent Claim
163 words
IN A PROCESS FOR THE TREATMENT OF INDUSTRIAL AND DOMESTIC WAST LIQUORS CONTAINING SUSPENDED SOLIDS WHEREIN SAID SOLIDS ARE SEPARATED FROM SAID WAST LIQUORS BY INTRODUCING INTO A WASTE LIQUOR A FLOCCULATING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFATES OF IRON AND ALUMINUM UNDER ALKALINE TO NEUTRAL CONDITIONS EFFECTIVE TO CONVERT THE FLOCCULATING AGENT TO ITS HYDROXIDE AND THEREBY FORM A FLUOCCULANT CONCENTRITE CONTAINING THE HYDROXIDE OF SAID FLOCCULATING AGENT AND THE ORIGINALLY SUSPENDED SOLIDS, THE IMPROVED METHOD OF RECOVERING THE RECYCLING SAID FLOCCULATING AGENT AND OF RECOVERING AND RECYCLING SAID SOLIDS WHICH COMPRISES: CONTACTING SAID CONCENTRATE WITH AT LEAST ONE SULFUR OXIDE GAS IN AN AMOUNT SUFFICIENT TO CONVERT THE HYDROXIDE OF SAID FLOCCULATING AGENT TO A MEMBER OF THE GROUP CONSISTING OF SOLFATES, SULFITES, AND BISULFITES AND WITH OXYGEN IN AN AMOUNT SUFFICIENT TO CONVERT SAID SULFITES AND BISULFITES TO SULFATES TO THEREBY REDISOLVE SAID FLOCCULATING AGENT; SEPARATING THE RESULTING SOLUBLE FLOCCULATING AGENT FROM THE SUSPENDED WASTE SOLIDS IN SAID
References Cited (Backward Citations)
US653745A
Cited
US2495120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |