US3390161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating trace quantites of an impurity isotope from a mixture of elements
Assignee: Bendix Corp
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Filing: 1963-09-30
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Granted: 1968-06-25
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Anthony V Fraioli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:31
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/16; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/262; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR SEPARATING TRACE QUANTITIES OF GAMMA EMITTING ISTOPE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COBALT AND MIXTURES OF COBALT AND IRON FROM ACID SOLUTIONS HAVING A PH VALUE BELOW 4 CONTAINING NICKEL AND A METAL SELECTED FROM THE GROU CONSISTING OF COBALT AND MIXTURES OF COBALT AND IRON, COMPRISING ADDING AN INACTIVE ISOTOPE OF THE METAL TO SAID SOLUTION SO THAT THE RATIO OF INACTIVE ISOTOPE TO GAMMA EMITTING ISOTOPE IS AT LEAST 10**4 PARTS TO 1 PART, ADDING TO SAID SOLUTION A PRECIPITATING REAGENT SELECTED FROM THE GROUP CONSISTING OF ALPHA-NITROSO BETA-NAPHTOL AND ALPHA-NITRO BETA-NAPHTHOL TO PRECIPITATE IN SAID SOLUTION SAID GAMMA EMITTING ISOTOPE AND SAID ADDED INACTIVE ISOTOPE, AND SEPARATING THE PRECIPITATE FROM THE SUPERNATANT SOLUTION.
Claim 2
Dependent Claim
123 words
A PROCESS FOR SEPARATING TRACE QUANTITIES OF GAMMA EMITTING ISTOPE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COBALT AND MIXTURES OF COBALT AND IRON FROM ACID SOLUTIONS HAVING A PH VALUE BELOW 4 CONTAINING NICKEL AND A METAL SELECTED FROM THE GROU CONSISTING OF COBALT AND MIXTURES OF COBALT AND IRON, COMPRISING ADDING AN INACTIVE ISOTOPE OF THE METAL TO SAID SOLUTION SO THAT THE RATIO OF INACTIVE ISOTOPE TO GAMMA EMITTING ISOTOPE IS AT LEAST 10**4 PARTS TO 1 PART, ADDING TO SAID SOLUTION A PRECIPITATING REAGENT SELECTED FROM THE GROUP CONSISTING OF ALPHA-NITROSO BETA-NAPHTOL AND ALPHA-NITRO BETA-NAPHTHOL TO PRECIPITATE IN SAID SOLUTION SAID GAMMA EMITTING ISOTOPE AND SAID ADDED INACTIVE ISOTOPE, AND SEPARATING THE PRECIPITATE FROM THE SUPERNATANT SOLUTION.
References Cited (Backward Citations)
US2259641A
Cited
US2605219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |