US2849471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organometallic carbonyl halide compounds of a group viii metal directly bonded to one cyclopentadienyl nucleus and to halogen and co-ordinately bonded to at least two carbonyl groups, and their preparation
Assignee: EIDP Inc
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Filing: 1955-01-28
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Granted: 1958-08-26
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Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 John C Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:53
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305; C07; C07F; C07F15/00; C07F15/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
PROCESS FOR PREPARING A CYCLOPENTADIENYLIRON DICARBONYL HALIDE WHICH COMPRISES REACTING A HALOGEN IN SOLUTION WITH BIS(CYCLOPENTADIENYLIRON) TETRACARBONYL AT A TEMPERATURE OF 0 TO 50*C.
Claim 2
Dependent Claim
24 words
PROCESS FOR PREPARING A CYCLOPENTADIENYLIRON DICARBONYL HALIDE WHICH COMPRISES REACTING A HALOGEN IN SOLUTION WITH BIS(CYCLOPENTADIENYLIRON) TETRACARBONYL AT A TEMPERATURE OF 0 TO 50*C.
Claim 3
Dependent Claim
58 words
AN ORGANOMETALLIC CARBONYL HALIDE OF A GROUP VIII METAL IN WHICH SAID METAL IS CO-ORDINATELY BONDED TO EACH OF AT LEAST TWO CARBONYL GROUPS AND IS FURTHER DIRECTLY BONDED TO HALOGEN AND TO A CARBOCYCLIC HYDROCARBON RADICAL CONTAINING A CYCLOPENTADIENE RING THROUGH NUCLEAR CARBON OF SAID RING, SAID CARBOCYCLIC HYDROCARBON RADICAL CONTAINING NOT MORE THAN 12 CARBON ATOMS.
Claim 4
Dependent Claim
58 words
AN ORGANOMETALLIC CARBONYL HALIDE OF A GROUP VIII METAL IN WHICH SAID METAL IS CO-ORDINATELY BONDED TO EACH OF AT LEAST TWO CARBONYL GROUPS AND IS FURTHER DIRECTLY BONDED TO HALOGEN AND TO A CARBOCYCLIC HYDROCARBON RADICAL CONTAINING A CYCLOPENTADIENE RING THROUGH NUCLEAR CARBON OF SAID RING, SAID CARBOCYCLIC HYDROCARBON RADICAL CONTAINING NOT MORE THAN 12 CARBON ATOMS.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |