Patent US2791597A successfully refreshed from Google Patents.
US2791597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of dicyclopentadienyliron
Assignee: EIDP Inc
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Filing: 1952-06-07
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Granted: 1957-05-07
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Expires: 1972-06-07
Abstract
No abstract record available.
Inventors
- 👤 Willard F Anzilotti
- 👤 Weinmayr Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:37
CPC Classifications
C; C07; C07F; C07F17/00; C07F17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE PROCESS OF PREPARING DICYCLOPENTADIENYLIRON WHICH COMPRISES HEATING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF CYCLOPENTADIEN AND DICYCLOPENTADIENE WITH IRON PENTACARBONYL AT A TEMPERATURE BETWEEN ABOUT 220*C. AND 500*C.
Claim 2
Dependent Claim
30 words
THE PROCESS OF PREPARING DICYCLOPENTADIENYLIRON WHICH COMPRISES HEATING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF CYCLOPENTADIEN AND DICYCLOPENTADIENE WITH IRON PENTACARBONYL AT A TEMPERATURE BETWEEN ABOUT 220*C. AND 500*C.
References Cited (Backward Citations)
US2409167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |