US2988564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted dicyclopentadienyliron compounds containing at least one cyano, formyl oxime or formyl oxime lower alkanoate group, and their preparation
Assignee: EIDP Inc
•
Filing: 1954-03-31
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Granted: 1961-06-13
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Expires: 1974-03-31
Abstract
No abstract record available.
Inventors
- 👤 Peter J Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:37
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/10; C07; C07F; C07F17/00; C07F17/02; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
CYCLOPENTADIENYL(CYANOCYCLOPENTADIENYL)IRON.
Claim 2
Dependent Claim
1 words
CYCLOPENTADIENYL(CYANOCYCLOPENTADIENYL)IRON.
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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |