US2887357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry fluorine separation method
Assignee: Individual
•
Filing: 1944-11-03
•
Granted: 1959-05-19
•
Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Glenn T Seaborg
- 👤 John W Gofman
- 👤 Raymond W Stoughton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:52
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/04; C01G43/06; C01G43/063; C01G43/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF OBTAINING U233 AND PA233 IN CONCENTRATED FORM FROM A MASS OF SLOW-NEUTRON-IRRADIATED TH232 WHICH METHOD COMPRISES FORMING PROTACTINIUM FLUORIDE, THE HEXAFLUORIDE OF URANIUM, AND TETRAFLUORIDE OF THORIUM BY TREATMENT WITH A FLURINE-CONTAINING GAS, HEATING THESE FLUORIDES TO APPROXIKMATELY 500* C. WHEREBY THE PROTACTINIUM FLUORIDE AND THE HEXFLUORIDE OF URANIUM ARE VOLATILIZED AND THUS SEPARATED FROM THE THORIUM FLUORIDE, AND AGING THE PROTACTINIUM WHEREBY U233 IS FORMED.
Claim 2
Independent Claim
69 words
THE METHOD OF OBTAINING U233 AND PA233 IN CONCENTRATED FORM FROM A MASS OF SLOW-NEUTRON-IRRADIATED TH232 WHICH METHOD COMPRISES FORMING PROTACTINIUM FLUORIDE, THE HEXAFLUORIDE OF URANIUM, AND TETRAFLUORIDE OF THORIUM BY TREATMENT WITH A FLURINE-CONTAINING GAS, HEATING THESE FLUORIDES TO APPROXIKMATELY 500* C. WHEREBY THE PROTACTINIUM FLUORIDE AND THE HEXFLUORIDE OF URANIUM ARE VOLATILIZED AND THUS SEPARATED FROM THE THORIUM FLUORIDE, AND AGING THE PROTACTINIUM WHEREBY U233 IS FORMED.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |