US3055885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel amino estratetraenes, intermediates, and process
Assignee: Sanofi Aventis France
•
Filing: 1961-10-18
•
Granted: 1962-09-25
•
Expires: 1981-10-18
Abstract
No abstract record available.
Inventors
- 👤 Nomine Gerard
- 👤 Bertin Daniel
- 👤 Bucourt Robert
- 👤 Pierdet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
C; C07; C07J; C07J41/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |