US3177050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of elemental iodine with a fluidized ion exchange bed
Assignee: Dow Chemical Co
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Filing: 1963-04-17
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Granted: 1965-04-06
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Expires: 1983-04-17
Abstract
No abstract record available.
Inventors
- 👤 James J Houy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:32
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; C; C01; C01B; C01B7/00; C01B7/13; C01B7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A PROCESS FOR THE RECOVERY OF ELMENTAL IODINE WHEREIN IODINE IS REMOVED AS A POLYHALIDE ANION FROM AN AQUEOUS SOLUTION CONTAINING IODINE BY AN ANION EXCHANGE RESIN, THE IMPROVEMENT WHICH CONSISTS OF: (1) INTRODUCING THE AQEUOUS SOLUTION CONTAINING IODINE AT THE LOWER END OF AN ANION EXCHANGE RESIN COLUMN; (2) CAUSING THE AQUEOUS SOLUTION TO FLOW UPWARDLY THROUGH THE RESIN BED AT A FLOW RATE SUFFICIENT TO FLUIDIZE AT LEAST A PORTION OF THE RESIN BED AND TO ESTABLISH AND MAINTAIN IN THE RESIN BED A DOWNWARDLY INCREASING GRADIENT OF RESIN IN THE POLYHALIDE FORM; AND (3) CONTINUING SAID UPFLOW FEED UNTIL THE RESIN BED IS LOADED TO THE DESIRED DEGREE WITH IODINE.
Claim 2
Dependent Claim
114 words
IN A PROCESS FOR THE RECOVERY OF ELMENTAL IODINE WHEREIN IODINE IS REMOVED AS A POLYHALIDE ANION FROM AN AQUEOUS SOLUTION CONTAINING IODINE BY AN ANION EXCHANGE RESIN, THE IMPROVEMENT WHICH CONSISTS OF: (1) INTRODUCING THE AQEUOUS SOLUTION CONTAINING IODINE AT THE LOWER END OF AN ANION EXCHANGE RESIN COLUMN; (2) CAUSING THE AQUEOUS SOLUTION TO FLOW UPWARDLY THROUGH THE RESIN BED AT A FLOW RATE SUFFICIENT TO FLUIDIZE AT LEAST A PORTION OF THE RESIN BED AND TO ESTABLISH AND MAINTAIN IN THE RESIN BED A DOWNWARDLY INCREASING GRADIENT OF RESIN IN THE POLYHALIDE FORM; AND (3) CONTINUING SAID UPFLOW FEED UNTIL THE RESIN BED IS LOADED TO THE DESIRED DEGREE WITH IODINE.
References Cited (Backward Citations)
US2945716A
Cited
US2945746A
Cited
US3037845A
Cited
US3050369A
Cited
US3098716A
Cited
US3075830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |