Patent US2849309A successfully refreshed from Google Patents.
US2849309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkaline earth metal alloys
Assignee: Ethyl Corp
•
Filing: 1954-12-22
•
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 17:39
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.
References Cited (Backward Citations)
US332736A
Cited
US1208596A
Cited
US1428041A
Cited
US1607245A
Cited
US2031486A
Cited
US2407862A
Cited
US2368282A
Cited
US2463367A
Cited
US2543406A
Cited
US2561862A
Cited
DE873445C
Cited
US2716057A
Cited
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 |