US2877093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption method for separating metal cations
Assignee: Individual
•
Filing: 1946-04-25
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Granted: 1959-03-10
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Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Edward R Tompkins
- 👤 George W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:46
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR CONCENTRATING URANIUM FISSION PRODUCT METAL CATIONS FROM AN ORIGINAL VOLUME OF AQUEOUS SOLUTION CONTAINING THE SAME, WHICH COMPRISES CONTACTING SAID SOLUTION WITH A BODY OF ION-EXCHANGE ADSORBENT TO EFFECT ADSORPTION OF SAID CATIONS THEREUPON, THEN CONTACTING THE FISSION-PRODUCT BEARING ADSORBENT WITH AN AQUEOUS SOLUTION OF AN AGENT SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS AND SALTS THEREOF TO THEREBY ELUATE SAID FISSION PRODUCT CATIONS IN A VOLUME OF ELUTE SMALLER THAN SAID ORIGINAL VOLUME, THEREUPON SUBSTANTIALLY ACIDIFYING THE RESULTING ELUATE WITHOUT INCREASING ITS VOLUME TO THE MAGNITUDE OF SAID ORIGINAL VOLUME, THEREAFTER CONTACTING THE ACIDIFIED ELUATE WITH A SMALLER BODY OF ION-EXCHANGE ADSORBENT TO EFFECT READSORPTION OF SAID CATIONS THEREUPON.
Claim 2
Dependent Claim
114 words
A PROCESS FOR CONCENTRATING URANIUM FISSION PRODUCT METAL CATIONS FROM AN ORIGINAL VOLUME OF AQUEOUS SOLUTION CONTAINING THE SAME, WHICH COMPRISES CONTACTING SAID SOLUTION WITH A BODY OF ION-EXCHANGE ADSORBENT TO EFFECT ADSORPTION OF SAID CATIONS THEREUPON, THEN CONTACTING THE FISSION-PRODUCT BEARING ADSORBENT WITH AN AQUEOUS SOLUTION OF AN AGENT SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS AND SALTS THEREOF TO THEREBY ELUATE SAID FISSION PRODUCT CATIONS IN A VOLUME OF ELUTE SMALLER THAN SAID ORIGINAL VOLUME, THEREUPON SUBSTANTIALLY ACIDIFYING THE RESULTING ELUATE WITHOUT INCREASING ITS VOLUME TO THE MAGNITUDE OF SAID ORIGINAL VOLUME, THEREAFTER CONTACTING THE ACIDIFIED ELUATE WITH A SMALLER BODY OF ION-EXCHANGE ADSORBENT TO EFFECT READSORPTION OF SAID CATIONS THEREUPON.
References Cited (Backward Citations)
US2288547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |