US3082059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the treatment of aqueous solutions
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1960-06-15
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Granted: 1963-03-19
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Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Mayer B Goren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:24
CPC Classifications
B; B01; B01J; B01J38/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PROCESS FOR REDUCING FERRIC IRON TO FERROUS ION IN AQUEOUS MEDIUM AND IN THE PRESENCE OF AN ACTIVATED CARBON CATALYST USING A WATER SOLUBLE SUBSTANCE YIELING A REDUCING ION SELECTED FROM THE GROUP CONSISTING OF SULFITE ION AND BISULFITE ION AS THE REDUCTANT WHEREIN THE CATALYST IS POISONED WITH CONTINUED USE, THE IMPROVEMENT COMPRISING REGENERATING THE POISONED ACTIVATED CARBON CATALYST AND RECYCLING THE REGENERATED ACTIVATED CARBON CATALYST IN THE PROCESS FOR REDUCING FERRIS ION TO FERROUS ION, THE POISONED ACTIVATED CARBON CATALYST BEING REGENERATED BY INTIMATELY CONTACTING IT WITH AN AQUEOUS SOLUTION AND SUBSEQUENT THEREOF WITH A SECOND AQUEOUS SOLITION TO IMPROVE THE CATALYTIC ACTIVITY, ONE OF THE SOLUTIONS BEING AN AQUEOUS ALKALINE SOLUTION AND THE OTHER BEING AN AQUEOUS ACIDIC SOLUTION.
Claim 2
Dependent Claim
124 words
IN A PROCESS FOR REDUCING FERRIC IRON TO FERROUS ION IN AQUEOUS MEDIUM AND IN THE PRESENCE OF AN ACTIVATED CARBON CATALYST USING A WATER SOLUBLE SUBSTANCE YIELING A REDUCING ION SELECTED FROM THE GROUP CONSISTING OF SULFITE ION AND BISULFITE ION AS THE REDUCTANT WHEREIN THE CATALYST IS POISONED WITH CONTINUED USE, THE IMPROVEMENT COMPRISING REGENERATING THE POISONED ACTIVATED CARBON CATALYST AND RECYCLING THE REGENERATED ACTIVATED CARBON CATALYST IN THE PROCESS FOR REDUCING FERRIS ION TO FERROUS ION, THE POISONED ACTIVATED CARBON CATALYST BEING REGENERATED BY INTIMATELY CONTACTING IT WITH AN AQUEOUS SOLUTION AND SUBSEQUENT THEREOF WITH A SECOND AQUEOUS SOLITION TO IMPROVE THE CATALYTIC ACTIVITY, ONE OF THE SOLUTIONS BEING AN AQUEOUS ALKALINE SOLUTION AND THE OTHER BEING AN AQUEOUS ACIDIC SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |