US2884311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkali metal hydrides
Assignee: Callery Chemical Co
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Filing: 1953-12-16
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Granted: 1959-04-28
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Expires: 1973-12-16
Abstract
No abstract record available.
Inventors
- 👤 George F Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:36
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
THAT METHOD OF MAKING AN ALKALI METAL HYDRIDE WHICH COMPRISES HEATING A MIXTURE OF FINELY DIVIDED ALKALI METAL CARBONATE AND FINELY DIVIDED CARBON TO AN ELEVATED TEMPERATURE IN AN ATMOSPHERE OF HYDROGEN, AND RECOVERING THE ALKALI METAL HYDRIDE FORMED.
Claim 2
Dependent Claim
39 words
THAT METHOD OF MAKING AN ALKALI METAL HYDRIDE WHICH COMPRISES HEATING A MIXTURE OF FINELY DIVIDED ALKALI METAL CARBONATE AND FINELY DIVIDED CARBON TO AN ELEVATED TEMPERATURE IN AN ATMOSPHERE OF HYDROGEN, AND RECOVERING THE ALKALI METAL HYDRIDE FORMED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |