US3064020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicyclopentadienyl metal compounds
Assignee: Ethyl Corp
•
Filing: 1957-09-20
•
Granted: 1962-11-13
•
Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Riemschneider Randolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:46
CPC Classifications
C; C07; C07F; C07F17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR THE PREPARATION OF A BIS(CYCLOPENTADIENYL)METAL COMPOUND IN WHICH THE METAL IS SELECTED FROM THE GROUP CONSISTING OF VANADIUM, CHROMIUM, MANGANESE, COBALT AND NICKEL, WHICH PROCESS COMPRISES REACTING IN A NEUTRAL ATMOSPHERE A MATERIAL CONSISTING ESSENTIALLY OF A HEATED METAL SALT, SAID SALT BEING SUBSTANTIALLY FREE FROM IRON SELECTED FROM THE GROUP CONSISTING OF VANADIUM, CHROMIUM, MANGANESE, COBALT AND NICKEL INORGANIC AND ORGANIC SALTS, SAID ORGANIC SALTS BEING DERIVED FROM AN ORGANIC ACID CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN, WITH A VAPOR OF A CYCLOPENTADIENE HYDROCARBON HAVING FROM FIVE TO 13 CARBON ATOMS.
Claim 2
Dependent Claim
95 words
A PROCESS FOR THE PREPARATION OF A BIS(CYCLOPENTADIENYL)METAL COMPOUND IN WHICH THE METAL IS SELECTED FROM THE GROUP CONSISTING OF VANADIUM, CHROMIUM, MANGANESE, COBALT AND NICKEL, WHICH PROCESS COMPRISES REACTING IN A NEUTRAL ATMOSPHERE A MATERIAL CONSISTING ESSENTIALLY OF A HEATED METAL SALT, SAID SALT BEING SUBSTANTIALLY FREE FROM IRON SELECTED FROM THE GROUP CONSISTING OF VANADIUM, CHROMIUM, MANGANESE, COBALT AND NICKEL INORGANIC AND ORGANIC SALTS, SAID ORGANIC SALTS BEING DERIVED FROM AN ORGANIC ACID CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN, WITH A VAPOR OF A CYCLOPENTADIENE HYDROCARBON HAVING FROM FIVE TO 13 CARBON ATOMS.
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) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |