US3030398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complex bimetallic cyclopentadienyl organometallic compounds
Assignee: Ethyl Corp
•
Filing: 1959-08-03
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Granted: 1962-04-17
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Hymin
- 👤 Witt Earl G De
- 👤 Jerome E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:34
CPC Classifications
C; C07; C07F; C07F17/00; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2699457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |