US2952697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclopentadienyl metal compounds
Assignee: Ethyl Corp
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Filing: 1958-10-07
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Granted: 1960-09-13
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Expires: 1978-10-07
Abstract
No abstract record available.
Inventors
- 👤 Richard D Gorsich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
C; C07; C07F; C07F13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR THE PRODUCTION OF CYCLOPENTADIENYL DIHALO METAL ALCOHOLATES COMPRISING REACTING AT A TEMPERTAURE BETWEEN ABOUT -50* C. AND 300* C., A CYCLOPENTADIENYL HYDROCARBON METAL TRIHALIDE IN WHICH THE CYCLOPENTADIENYL HYDROCARBON GROUP CONTAINS FROM 5 TO ABOUT 20 CARBON ATOMS WITH A HYDROCARBON ALCOHOL HAVING FROM 1 TO 20 CARBON ATOMS AND 1 TO 3 HYDROXYL GROUPS, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUP IV-B AND VANADIUM, THE CYCLOPENTADIENYL HYDROCARBON METAL TRIHALIDE TO ALCOHOL MOLE EQUIVALENT RATIO BEING FROM ABOUT 0.5 TO ABOUT 100.
Claim 2
Dependent Claim
90 words
A PROCESS FOR THE PRODUCTION OF CYCLOPENTADIENYL DIHALO METAL ALCOHOLATES COMPRISING REACTING AT A TEMPERTAURE BETWEEN ABOUT -50* C. AND 300* C., A CYCLOPENTADIENYL HYDROCARBON METAL TRIHALIDE IN WHICH THE CYCLOPENTADIENYL HYDROCARBON GROUP CONTAINS FROM 5 TO ABOUT 20 CARBON ATOMS WITH A HYDROCARBON ALCOHOL HAVING FROM 1 TO 20 CARBON ATOMS AND 1 TO 3 HYDROXYL GROUPS, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUP IV-B AND VANADIUM, THE CYCLOPENTADIENYL HYDROCARBON METAL TRIHALIDE TO ALCOHOL MOLE EQUIVALENT RATIO BEING FROM ABOUT 0.5 TO ABOUT 100.
References Cited (Backward Citations)
GB793354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |