US3062787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(3, 3, 4, 4-tetrafluoro-cyclobutyl 1-substituted amides and the preparation thereof
Assignee: EIDP Inc
•
Filing: 1959-11-23
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Granted: 1962-11-06
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Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 David C England
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
C; C07; C07C; C07C307/00; C07C307/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
20 words
A LINEAR POLYCARBOXAMIDE WHEREIN 5-95% OF THE AMIDE NITROGENS CARRY ATTACHED THROUGH A CARBON-NITROGEN BOND A RADICAL OF THE FORMULA
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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |