US3104166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and separation of molten cerium from its reducing metal chloride which is in solid form
Assignee: Dow Chemical Co
•
Filing: 1961-03-02
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Granted: 1963-09-17
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Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 William E Domning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
C; C22; C22B; C22B59/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE IMPROVED METHOD OF PREPARING CERIUM WHICH COMPRISES HEATING CERIUM CHLORIDE WITH A REDUCTOR METAL SELECTED FROM THE GROUP CONSISTING OOF SODIUM AND BARIUM AT A TEMPERATURE OF AT LEAST 400*C. AND , UNDER AN INERT ATMOSPHERE THERREBY TO CAUSE REDUCTION OF THE CERIUM CHLORIDE TO CERIUM AND OXIDATION OF THE REDUCTOR METAL TO REDUCTOR METAL CHLORIDE; AND SEPARATING SAID CERIUM FROM THE REACTION MIXTURE WHILE SAID MIXTURE IS AT A TEMPERATURE AT WHICH THE CERIUM IS MOLTEN BUT THE SAID REDUCTOR METAL CHLORIDE IS IN THE SOLID STATE.
Claim 2
Dependent Claim
89 words
THE IMPROVED METHOD OF PREPARING CERIUM WHICH COMPRISES HEATING CERIUM CHLORIDE WITH A REDUCTOR METAL SELECTED FROM THE GROUP CONSISTING OOF SODIUM AND BARIUM AT A TEMPERATURE OF AT LEAST 400*C. AND , UNDER AN INERT ATMOSPHERE THERREBY TO CAUSE REDUCTION OF THE CERIUM CHLORIDE TO CERIUM AND OXIDATION OF THE REDUCTOR METAL TO REDUCTOR METAL CHLORIDE; AND SEPARATING SAID CERIUM FROM THE REACTION MIXTURE WHILE SAID MIXTURE IS AT A TEMPERATURE AT WHICH THE CERIUM IS MOLTEN BUT THE SAID REDUCTOR METAL CHLORIDE IS IN THE SOLID STATE.
References Cited (Backward Citations)
CA591005A
Cited
FR430116A
Cited
FR489155A
Cited
US1707637A
Cited
US1989734A
Cited
US2782116A
Cited
US2763480A
Cited
US2773760A
Cited
US2787539A
Cited
GB810428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |