US2656366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble esters of cortisone and related compounds
Assignee: Merck and Co Inc
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Filing: 1950-07-27
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Granted: 1953-10-20
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Expires: 1970-07-27
Abstract
No abstract record available.
Inventors
- 👤 Minlon Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:09
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/57; A61K31/573; C; C07; C07B; C07B61/00; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A COMPOUND SELECTED FROM THE GROUP WHICH CONSISTS OF $4-3,11,20-TRIKETO-17-HYDROXY-21-(BCARBOXY - PROPIONOXY) - PREGNENE, $4 - 13,11,20TRIKETO-17-HYDROXY-21-(ORTHO-CARBOXY-BENZOXY)PREGNENE, $4 - 3,11,20 - TRIKETO - 17 - HYDROXY - 21 (B-CARBOXY-ACRYLOXY)-PREGNENE, AND ALKALI METAL AND ALKALINE EARTH METAL SALTS THEREOF.
Claim 2
Dependent Claim
38 words
A COMPOUND SELECTED FROM THE GROUP WHICH CONSISTS OF $4-3,11,20-TRIKETO-17-HYDROXY-21-(BCARBOXY - PROPIONOXY) - PREGNENE, $4 - 13,11,20TRIKETO-17-HYDROXY-21-(ORTHO-CARBOXY-BENZOXY)PREGNENE, $4 - 3,11,20 - TRIKETO - 17 - HYDROXY - 21 (B-CARBOXY-ACRYLOXY)-PREGNENE, AND ALKALI METAL AND ALKALINE EARTH METAL SALTS THEREOF.
References Cited (Backward Citations)
CH210712A
Cited
US2462133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |