US3141043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclopentadienylimines, process for their production and condensation products thereof
Assignee: Purdue Research Foundation
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Filing: 1961-03-24
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Granted: 1964-07-14
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Earl T Mcbee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:59
CPC Classifications
C; C07; C07D; C07D225/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
4 words
COMPOUNDS HAVING 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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |