US2849309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkaline earth metal alloys
Assignee: Ethyl Corp
•
Filing: 1954-12-22
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Granted: 1958-08-26
•
Expires: 1974-12-22
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Whaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22C; C22C28/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A PROCESS FOR THE PREPARATION OF POWDERED,S IRREGULARLY SHAPED CRYSTALLINE ALLOY OF ALUMINUM AND CALCIUM HAVING THE FORMUAL AL2CA WHICH COMPRISES DISSOLVING ALUMINUM AND CALCIUM IN PROPORTION WITHIN ABOUT 5 PERCENT OF THE STOICHIOMETRIC AMOUNT IN MOLTEN SODIUM, COOLING THE SOLUTION TO A TEMPERATURE WHERE THE ALLOY FORMED IS IN SOLID STATE, AND RECOVERING SAID ALLOY BY REACTING THE SODIUM WITH AT LEAST THE STOICHIMOETRIC AMOUNT OF METHANOL AT A TEMPERATURE BELOW THE BOILING POINT OF METHANOL.
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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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |