US3351587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkyl-oxo-diazaspiro penicillins
Assignee: Wyeth LLC
•
Filing: 1966-11-14
•
Granted: 1967-11-07
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Alburn
- 👤 Norman H Grant
- 👤 Donald E Clark
- 👤 Wolf Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:10
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A COMPOUND OF THE GROUP HAVING THE FORMULA:
Claim 2
Dependent Claim
8 words
A COMPOUND OF THE GROUP HAVING THE FORMULA:
References Cited (Backward Citations)
US3316273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |