US2810736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclopentadienyliron and hydrocarbon-substituted cyclopentadienyliron carbonyl compounds
Assignee: EIDP Inc
•
Filing: 1953-07-01
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Granted: 1957-10-22
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Willard E Catlin
- 👤 John C Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:53
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2282; B01J31/2295; B01J31/20; C; C07; C07F; C07F15/00; C07F15/02; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AN IRON CARBONYL COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
7 words
AN IRON CARBONYL COMPOUND OF THE FORMULA
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |