US2653089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of heavy metals
Assignee: Phillips Petroleum Co
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Filing: 1949-11-07
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Granted: 1953-09-22
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Expires: 1969-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jesse M Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:58
CPC Classifications
C; C01; C01G; C01G1/00; B; B01; B01J; B01J39/00; B01J39/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
THE PROCESS FOR REMOVING HEAVY METALS FROM AN AQUEOUS SALINE SOLUTION CONTAINING SAME WHICH COMPRISES CONTACTING SAID AQUEOUS SOLUTION WITH AN ION EXCHANGE MATERIAL CONTAINING REPLACEABLE IONS OF IRON.
Claim 2
Dependent Claim
29 words
THE PROCESS FOR REMOVING HEAVY METALS FROM AN AQUEOUS SALINE SOLUTION CONTAINING SAME WHICH COMPRISES CONTACTING SAID AQUEOUS SOLUTION WITH AN ION EXCHANGE MATERIAL CONTAINING REPLACEABLE IONS OF IRON.
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) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |