US2858194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hexasodium hexacarbonyl
Assignee: EIDP Inc
•
Filing: 1956-06-14
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Granted: 1958-10-28
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Expires: 1976-06-14
Abstract
No abstract record available.
Inventors
- 👤 Henry C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:58
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/64
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
THE PROCESS FOR THE PRODUCTION OF HEXASODIUM HEXACARBONYL WHICH COMPRISES PASSING CARBON MONOXIDE HEXACONTACT WITH SODIUM AT A PRESSURE NOT TO EXCEED 10-20 MM. HG ABOVE ATMOSPHERIC PRESSURE WHILE HEATING THE LATTER TO A TEMPERATURE AF ABOUT 300*C. UNTIL A RAPID EXOTHERMIC REACTION TAKES PLACE, DISCONTINUING HEATING, AND MAINTAINING THE TEMPERATURE OF THE REACTANTS BELOW 380*C. UNTIL REACTION BETWEEN THE SODIUM AND CARBON MONOXIDE IS SUBSTANTIALLY COMPLETE.
References Cited (Backward Citations)
US2736752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |