Patent US2912449A successfully refreshed from Google Patents.
US2912449A
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Method for making bis-alkylated cyclopentadienyl compounds
Assignee: Texaco Inc
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Filing: 1955-06-02
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Granted: 1959-11-10
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Expires: 1975-06-02
Abstract
No abstract record available.
Inventors
- 👤 William M Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:30
CPC Classifications
C; C07; C07F; C07F17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A PROCESS FOR PREPARTION OF BIS-ALKYULATED CYCLOPENTADIENYL IRON FROM WHICH CONSISTS ESSENTIALLY OF: MIXING A FULVENE HAVING THE FORMULA
Claim 2
Dependent Claim
19 words
A PROCESS FOR PREPARTION OF BIS-ALKYULATED CYCLOPENTADIENYL IRON FROM WHICH CONSISTS ESSENTIALLY OF: MIXING A FULVENE HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |