US2653955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cortisone esters and process
Assignee: Merck and Co Inc
•
Filing: 1951-08-09
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Granted: 1953-09-29
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Expires: 1971-08-09
Abstract
No abstract record available.
Inventors
- 👤 Edward F Rogers
- 👤 John P Conbere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
C; C07; C07J; C07J5/00; C07B; C07B61/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
THE COMPOUND SELECTED FROM THE CLASS CONSISTING OF CORTISONE TRICARBALLYLATE, ITS ALKALI METAL AND ALKALINE EARTH METAL SALTS.
Claim 2
Dependent Claim
18 words
THE COMPOUND SELECTED FROM THE CLASS CONSISTING OF CORTISONE TRICARBALLYLATE, ITS ALKALI METAL AND ALKALINE EARTH METAL SALTS.
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) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |