US2868816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of cyclopentadienyl manganese tricarbonyl compounds
Assignee: Ethyl Corp
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Filing: 1956-11-08
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Granted: 1959-01-13
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Expires: 1976-11-08
Abstract
No abstract record available.
Inventors
- 👤 Harris E Petree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
C; C07; C07F; C07F13/00; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS WHICH COMPRISES REACTING A DICYCLOPENTADIENYL MANGANESE HYDROCARBON COMPOUND WITH CARBON MONOXIDE IN THE PRESENCE OF HYDROGEN WITH THE RATIO OF THE PARTIAL PRESSURE OF CARBON MONOXIDE TO HYDROGEN VARYING FROM ABOUT 100:1 TO ABOUT 1:100.
Claim 2
Dependent Claim
37 words
A PROCESS WHICH COMPRISES REACTING A DICYCLOPENTADIENYL MANGANESE HYDROCARBON COMPOUND WITH CARBON MONOXIDE IN THE PRESENCE OF HYDROGEN WITH THE RATIO OF THE PARTIAL PRESSURE OF CARBON MONOXIDE TO HYDROGEN VARYING FROM ABOUT 100:1 TO ABOUT 1:100.
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |