US2810635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making alkali metals and apparatus therefor
Assignee: Individual
•
Filing: 1955-07-12
•
Granted: 1957-10-22
•
Expires: 1975-07-12
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:10
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR THE PRODUCTION OF AN ALKALI METAL WHICH COMPRISES HEATING, AT A TEMPERATURE ABOVE THE MELTING POINT OF ALUMINUM BUT BELOW THE BOILING POINT THEREOF, A MIXTURE OF AN ALKALI METAL ALUMINATE WITH METALLIC ALUMINUM.
Claim 2
Dependent Claim
37 words
A PROCESS FOR THE PRODUCTION OF AN ALKALI METAL WHICH COMPRISES HEATING, AT A TEMPERATURE ABOVE THE MELTING POINT OF ALUMINUM BUT BELOW THE BOILING POINT THEREOF, A MIXTURE OF AN ALKALI METAL ALUMINATE WITH METALLIC ALUMINUM.
References Cited (Backward Citations)
US673761A
Cited
US2710798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |