US3663585A
Expired / Lapsed
US
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Process for lithiating ferrocene
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-08-03
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Granted: 1972-05-16
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Expires: 1990-08-03
Abstract
Abstract FERROCENE OR A DERIVATIVE THEROF IS LITHIATED BY REACTION, AT TEMPERATURES IN THE RANGE 25*-100$C., IN A HYDROCARBON SOLVENT, WITH A HYDROCARBON LITHIUM, PREFERABLY IN CONJUNCTION WITH AN N,N,N'',N''-TETRAALKYL ETHYLENE DIAMINE (I). THE PRODUCTS PRODUCTS PRODUCED IN CONJUNCTION WITH (I) TEND TO HAVE HIGHER DEGREES OF LITHIATION THAN THOSE PRODUCED IN THE ABSENCE OF (I).
Inventors
- 👤 Arthur W Langer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:07
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C07; C07F; C07F1/00; C07F1/02; C07F1/04; C07F17/00; C07F17/02; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0805; C07F7/081; C08C; C08C19/00; C08C19/26
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |