US2967087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of metal carbonyls
Assignee: Ethyl Corp
•
Filing: 1957-03-13
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Granted: 1961-01-03
•
Expires: 1977-03-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Coffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:51
CPC Classifications
C; C01; C01G; C01G45/00; C01G45/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
PROCESS FOR THE PREPARATION OF AN ALKALI METAL MANGANESE PENTACARBONYL WHICH COMPRISES REACTING DIMANGANESE DECACARBONYL WITH AN ALKALI METAL REACTANT AT TEMPERATURES OF FROM 10 TO ABOUT 100*C. IN THE PRESENCE OF A SATURATED ORGANIC ETHER HAVING AT LEAST ABOUT 4 CARBON ATOMS.
Claim 2
Dependent Claim
43 words
PROCESS FOR THE PREPARATION OF AN ALKALI METAL MANGANESE PENTACARBONYL WHICH COMPRISES REACTING DIMANGANESE DECACARBONYL WITH AN ALKALI METAL REACTANT AT TEMPERATURES OF FROM 10 TO ABOUT 100*C. IN THE PRESENCE OF A SATURATED ORGANIC ETHER HAVING AT LEAST ABOUT 4 CARBON ATOMS.
References Cited (Backward Citations)
US2434578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |