US2736681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical compounds
Assignee: Merck and Co Inc
•
Filing: 1955-02-11
•
Granted: 1956-02-28
•
Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 Tishler Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:28
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
COMPOSITIONS COMPRISING MIXTURES OF 9A-FLUORO-4PREGNENE-11B,17A,21-TRIOL-3,20-DIONE 21-TERTIARY-BUTYLACETATE AND PHARMACEUTICAL CARRIER.
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |