Patent US2859233A successfully refreshed from Google Patents.
US2859233A
Expired / Lapsed
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Aminoalkyl substituted dicyclopentadienyliron compounds and their preparation
Assignee: EIDP Inc
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Filing: 1953-07-01
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Granted: 1958-11-04
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Peter J Graham
- 👤 Gerald M Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:17
CPC Classifications
C; C07; C07F; C07F17/00; C07F17/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF AMINOALKYL SUBSTITUTED DICYCLOPENTADIENYLIRON COMPOUNDS AND THEIR AMINE ACID SALTS, WHEREIN IRON IS DIRECTLY BONDED TO NUCLEAR CARBON OF TWO SEPARATE CYCLOPENTADIENE RINGS, AT LEAST ONE OF SAID CYCLOPENTADIENE RINGS HAS AN AMINOALKYL GROUP OF 1 TO 7 CARBON ATOMS DIRECTLY BONDED TO NUCLEAR CARBON THEREOF THROUGH CARBON OF SAID AMINOALKYL GROUP, THE SOLE SUBSTITUENTS ATTACHED TO THE NUCLEAR CARBON ATOMS OF EACH OF SAID CYCLOPENTADIENE RINGS ARE AT MOST ONE OF SAID AMINOALKYL GROUPS AND AT MOST ONE MONOVALENT HYDROCARBON RADICAL FREE FROM ALIPHATIC UNSATURATION AND OF NOT MORE THAN 7 CARBON ATOMS, AND THE NUCLEAR CARBON ATOMS OF EACH OF SAID CYCLOPENTADIENE RINGS ARE OTHERWISE BONDED SOLELY TO SAID IRON AND HYDROGEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |