Patent US2998301A successfully refreshed from Google Patents.
US2998301A
Expired / Lapsed
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Process for preparing divanadium dodecacarbonyl
Assignee: Union Carbide Corp
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Filing: 1959-10-16
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Granted: 1961-08-29
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Expires: 1979-10-16
Abstract
No abstract record available.
Inventors
- 👤 John E Wyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:30
CPC Classifications
C; C07; C07F; C07F9/00; C01; C01G; C01G31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR PREPARING DIVANADIUM DODECACARBONYL WHICH COMPRISES CONTACTING AT A TEMPERATURE BETWEEN ABOUT 55*C. AND ABOUT 120*C. A BIS(AROMATIC HYDROCARBON) VANADIUM COMPOUND WITH CARBON MONOXIDE AT A PRESSURE ABOVE ABOUT 15 POUNDS PER SQUARE INCH GAUGE.
Claim 2
Dependent Claim
37 words
A PROCESS FOR PREPARING DIVANADIUM DODECACARBONYL WHICH COMPRISES CONTACTING AT A TEMPERATURE BETWEEN ABOUT 55*C. AND ABOUT 120*C. A BIS(AROMATIC HYDROCARBON) VANADIUM COMPOUND WITH CARBON MONOXIDE AT A PRESSURE ABOVE ABOUT 15 POUNDS PER SQUARE INCH GAUGE.
References Cited (Backward Citations)
US2880066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |