US2675403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbamates containing the cycloheptatrien-1-ol-2-one ring
Assignee: EIDP Inc
•
Filing: 1951-07-13
•
Granted: 1954-04-13
•
Expires: 1971-07-13
Abstract
No abstract record available.
Inventors
- 👤 Harold E Cupery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:48
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A CARBAMATE CONTAINING THE CYCLOHEPTATRIEN1-OL-2-ONE RING AND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
A CARBAMATE CONTAINING THE CYCLOHEPTATRIEN1-OL-2-ONE RING AND HAVING THE GENERAL 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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |