US3033855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
21-aminomethyl derivatives of progesterone
Assignee: Pfizer Inc
•
Filing: 1960-05-11
•
Granted: 1962-05-08
•
Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 Rudolph G Berg
- 👤 Sanford K Figdor
- 👤 Gerald D Laubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
C; C07; C07J; C07J41/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE HAVING THE FORMULAS:
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE HAVING THE FORMULAS:
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |