US3092620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of penicillanic acid
Assignee: Pfizer Inc
•
Filing: 1960-10-05
•
Granted: 1963-06-04
•
Expires: 1980-10-05
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Seto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
C; C07; C07D; C07D499/00; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6561; C07F9/65611
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA:
References Cited (Backward Citations)
BE569728A
Cited
US2941995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |